Dive R494 | |||||||
Dive Plan: Dive R494 will start about 1 km south of the SeaBeam anomaly site surveyed on R465 in 9198 and move north to map the limits of the 1998 lava flow and sample the young and adjacent older lavas. | |||||||
Note: NO ACOUSTIC NAV THIS DIVE. NAV FIXES ON DIVE PLOT ARE SHIP AT STERN. X/Y ARE SHIP GPS. | |||||||
UTC Hour | Min | Depth (m) | Sub Hdng (deg) | UTM X | UTM Y | Comments | Frmgrbs, Photos, Samples |
3 | 12 | 738 | 258 | 423645 | 5085308 | ROPOS in water at 0230 GMT. Marginal sea conditions. Biobox, 4 rock cores, Suction sampler and standard cameras on. | |
4 | 16 | 1717 | 228 | 422037 | 5078794 | on bottom, old-looking sheet flow with a good amount of sediment. Flow may be as old as Bob. | |
4 | 19 | 1719 | 217 | 422037 | 5078794 | some older looking lobates too. Skate in video on bottom. We are about 1km south of dive 465. Heading north | |
4 | 21 | 1722 | 3 | 422037 | 5078794 | skate | R494-1 |
4 | 21 | 1722 | 3 | 422037 | 5078794 | Deep-Sea Skate | R494-2 |
4 | 21 | 1719 | 6 | 422037 | 5078794 | Yellow hydrothermal sed. around. Also a 0.5 m high mound of hydrothermal, yellowish color. | |
4 | 22 | 1721 | 6 | 422037 | 5078794 | Sediment looks to have a hydrothermal component, mixed sheets and lobes. lots of hydrothermal deposits concentrated in mounds and edges of pillows. | |
4 | 28 | 1722 | 180 | 422037 | 5078794 | Older folded sheet flows near where we landed. Lots of brittle stars, sponges. Taking first rock sample from here | Photo 1 |
4 | 30 | 1722 | 183 | 422037 | 5078794 | location of first rock sample | R494-5 |
4 | 36 | 1723 | 165 | 422037 | 5078794 | Nice sponge with rock core sampling | R494-7 |
4 | 35 | 1722 | 168 | 422037 | 5078794 | sheets are too brittle to sample with arm so they are taking a rock core | |
4 | 37 | 1722 | 174 | 422037 | 5078794 | sponge at site one. | R494-9 |
4 | 39 | 1723 | 179 | 422037 | 5078794 | Rock core sample 1 | R494-11 |
4 | 38 | 1723 | 172 | 422037 | 5078794 | Core manipulation. Taking core. Far left core, purple core. (Photo2) | Rck_core_494-1 |
4 | 45 | 1723 | 200 | 422037 | 5078794 | going to suction the surface of the flow for sediment. | |
4 | 49 | 1722 | 199 | 422037 | 5078794 | SS-j2_rck _R494-2 |
|
4 | 50 | 1722 | 198 | 422037 | 5078794 | sediment taken here is on top of lobate, relatively thin pelagic looking. sucked a brittle star to. Sucked into J2. | |
4 | 54 | 1722 | 200 | 422037 | 5078794 | Background sample | R494-12 |
4 | 57 | 1723 | 181 | 422037 | 5078794 | Sea pen | R494-13 |
4 | 56 | 1722 | 189 | 422037 | 5078794 | Solitary soft coral, Gorgonia also an Anemone in the same area. | |
5 | 1 | 1723 | 177 | 422037 | 5078794 | Moving a bit forward to continue sucking another sample from top of the lobate near the coral. | |
5 | 9 | 1723 | 170 | 422037 | 5078794 | Finished sampling suction sampler, last suck was in hollow between lobates. some may have been hydrothermal yellowish material. Photo3 - Gorgonia sponge on lobates | Photo 3 |
5 | 11 | 1723 | 128 | 422037 | 5078794 | Background bottle | R494-17 |
5 | 12 | 1723 | 61 | 422037 | 5078794 | Looked like J3 was contaminated by sed. from J2. | |
5 | 15 | 1720 | 360 | 422037 | 5078794 | Heading N, lobate lavas, crinoid and hydrothermal sed. Older area than anything in Caldera. Turning into jumbled and folded flows. Photo 5 - Hydro sed on older lavas and crinoid | Photo 5 |
5 | 17 | 1720 | 339 | 422037 | 5078794 | Big sponges on lobates, ropy lavas between lobates. Strange looking very flat ridge, could be a pressure ridge up to east. | Photo 7 |
5 | 18 | 1720 | 352 | 422037 | 5078794 | Lineated flows, rat tail. small fissures in lineated sheet flow. | |
5 | 19 | 1722 | 0 | 422037 | 5078794 | Lobates with hydrothermal sed. between lobes. Dark crinoid. Sponges | |
5 | 21 | 1722 | 358 | 422042 | 5078807 | Jumbled sheets with crinoid and sponges. Photo 8 - white sponge | Photo-8 |
5 | 24 | 1721 | 3 | 422042 | 5078807 | large flat blocks of tilted lava, lobes on other side of sheets toward the north. | |
5 | 26 | 1719 | 5 | 422042 | 5078807 | More broken and tilted blocks of sheets, fairly thick, up to about 20cm thick | |
5 | 28 | 1721 | 359 | 422038 | 5078879 | lobate over the sheet flow. Lobates are to the east. Photo - flat sheet | Photo-8 |
5 | 30 | 1720 | 5 | 422040 | 5078901 | Pillows and tubes, with sediment accumulated in lows. Pillows and lobes may be related. Both on top of sheets. pillows stick up higher than the lobates. | |
5 | 34 | 1722 | 2 | 422046 | 5078983 | Stalked crinoid | R494-18 |
5 | 34 | 1722 | 9 | 422046 | 5078937 | old lobate filed, sediment infilling, crinoids, rattail. gorgonia. Photo - pile of lobes | photo 10 |
5 | 38 | 1720 | 360 | 422047 | 5079038 | in lobates but back into lineated sheets, massive with fractures, then back into lobates around the edge. Photo 12 - anemone. Photo 13 - gorgonia | photo 12 photo 13 |
5 | 39 | 1719 | 6 | 422047 | 5079038 | Looks like lobates were younger than the fissure. Photo - fissure | Photo |
5 | 40 | 1719 | 7 | 422047 | 5079038 | Photo - in the fissure | photo 15 |
5 | 41 | 1720 | 357 | 425922 | 5079394 | Fissures in flat sheet flow | R494-21 |
5 | 41 | 1719 | 2 | 425922 | 5079394 | fissures run east of north maybe 20 degrees. huge sheetflow, lineated sheets. flat broad area. over high point and again the lobates lap up on it again. Photo - lapping lobates | Photo 16 |
5 | 43 | 1721 | 4 | 422044 | 5079096 | older lobates. typical pic. | R494-22 |
5 | 43 | 1720 | 356 | 422044 | 5079096 | moving laterally east in lobates. | |
5 | 44 | 1719 | 1 | 422043 | 5079103 | Fissure in lobates, quite continuous with white staining on edges. | Photo 17 |
5 | 45 | 1719 | 29 | 422043 | 5079103 | back into sheets, thick flows that have fissures running
NE.
Most lineations run east-west. Photo - lobates to sheets with fissures |
Photo 18 |
5 | 46 | 1718 | 33 | 422043 | 5079103 | fissure | R494-24 |
5 | 47 | 1721 | 34 | 422043 | 5079103 | Deep Crack | R494-25 |
5 | 47 | 1719 | 28 | 422043 | 5079103 | following fissure and stopping to get piece of thick massive sheet. Photos - fissure | Photo 19 Photo 20 |
5 | 48 | 1722 | 1 | 422043 | 5079103 | Sample of thick sheet flow along fissure | R494-26 |
5 | 51 | 1721 | 353 | 422043 | 5079103 | Slabby piece of thick sheet flow from fissure, aprox. 10 cm wide, put in STB BioBox. | Rck_R494-3 |
5 | 53 | 1721 | 30 | 422048 | 5079201 | Heading 020 along fissure, with both sheets and lobes are fissure. | Photo 21 |
5 | 54 | 1720 | 20 | 422048 | 5079201 | fissure narrows through lobates | R494-27 |
5 | 55 | 1721 | 16 | 422048 | 5079214 | fissure widens in lobates | |
5 | 56 | 1722 | 19 | 422048 | 5079214 | Jumbled sheets with many animals | photo 22 |
5 | 56 | 1722 | 17 | 422048 | 5079214 | Jumbled sheets with stalked critters. | |
5 | 57 | 1722 | 19 | 422048 | 5079214 | Lineated sheets, crinoid. Ropy sheets, back into rift | |
5 | 58 | 1722 | 20 | 422048 | 5079214 | Flow in the crack | R494-28 |
5 | 58 | 1722 | 23 | 422048 | 5079214 | Eruptive fissure with new flow | R494-29 |
5 | 59 | 1722 | 24 | 422048 | 5079214 | New flow in fissure. Photos of new flow | Photos 25?-27 |
5 | 59 | 1722 | 24 | 422048 | 5079214 | New flow in fissure | R494-31 |
6 | 0 | 1722 | 23 | 422048 | 5079214 | Photo - fissure | Photo 28 |
6 | 1 | 1722 | 22 | 422048 | 5079214 | New lava 1.5 meters down, between thick sheet. | R494-32 |
6 | 3 | 1720 | 203 | 422058 | 5079245 | fissure looking south narrower fissure down a meter | R494-34 |
6 | 3 | 1721 | 216 | 422058 | 5079245 | Fresh lava in crack | R494-35 |
6 | 3 | 1721 | 216 | 422058 | 5079245 | Photo 31 - 33 | |
6 | 4 | 1722 | 208 | 422058 | 5079245 | Continuing down fissure | R494-37 |
6 | 3 | 1722 | 222 | 422058 | 5079245 | New lava up at level of older lobates. following the fissure to the south | Photo 34 - 37 |
6 | 5 | 1721 | 197 | 422058 | 5079245 | End of flow, fissure starts and then there appears to be a bit more in fissure | Photo 39 |
6 | 6 | 1721 | 204 | 422058 | 5079245 | Continuing down fissure with fresh lava | R494-38 |
6 | 6 | 1722 | 200 | 422058 | 5079245 | New flow continues to south in fissure. Photo - down in fissure, new but sed coated flow | Photo 40 |
6 | 7 | 1723 | 203 | 422058 | 5079245 | Fissure seems to get very narrow and flow dies out. End of tether, have to go back N. | |
6 | 12 | 1719 | 48 | 422058 | 5079245 | Heading north again, back on fissure. | |
6 | 14 | 1724 | 36 | 422058 | 5079245 | New flow in axis of fissure. Sampling | R494-39 |
6 | 14 | 1724 | 43 | 422058 | 5079245 | Taking a rock sample in the fissure. End of a tube. Very
glassy.
Putting it in STB. BioBox with the slabby, sheet. Lava, toe. |
Rck_R494-4 |
6 | 20 | 1723 | 44 | 422058 | 5079245 | Fissured older pillow above the young flow. | R494-40 |
6 | 21 | 1723 | 46 | 422058 | 5079245 | sampling new flow. | R494-41 |
6 | 23 | 1723 | 42 | 422058 | 5079245 | Another sample from the same site Sample B is larger (sample B was changed to R494-5 | Rck_494-5 |
6 | 24 | 1723 | 41 | 422058 | 5079245 | Broken pillow | R494-42 |
6 | 26 | 1723 | 30 | 422058 | 5079245 | Last sample now be changed to Rck-494-5, BUT it is the same flow. | |
6 | 28 | 1724 | 10 | 422060 | 5079240 | sample locale for older sample just outside of eruptive fissure. | R494-43 |
6 | 29 | 1724 | 14 | 422060 | 5079240 | Graben rocks | R494-44 |
6 | 29 | 1724 | 10 | 422060 | 5079240 | Sampling older lava just outside of eruptive fissure, slabby small plate. Appears to be difficult to sample, but they got a small piece and put it in the purse | Rck-494-6 |
6 | 37 | 1723 | 20 | 421982 | 5079345 | Heading N along the fissure again, lava almost to the top. | Photo 42 |
6 | 38 | 1721 | 28 | 422060 | 5079242 | Narrow fissure with lava in bottom. Fissure narrows to cm width | Photo 45 |
6 | 38 | 1721 | 34 | 422060 | 5079242 | Moving to west to see if there is another fissure. Lots of small cracks and fractures in Massive sheet but no eruptive fissure. | |
6 | 41 | 1723 | 80 | 422060 | 5079242 | Complex terrain, with fissure cutting through it. Waiting for ship to move. Want to move at 030 heading. | |
6 | 44 | 1719 | 26 | 422060 | 5079242 | extensive lineated sheet with fractures running 060. | |
6 | 47 | 1723 | 37 | 422060 | 5079242 | Back along fissure, very narrow here, can't see any lava in it. | |
6 | 51 | 1723 | 22 | 422060 | 5079242 | Back at the lava filled crack | R494-47 |
6 | 51 | 1723 | 22 | 422060 | 5079242 | Pillows in bottom of narrow fissure | Photo 48 |
6 | 52 | 1722 | 37 | 422060 | 5079242 | Following the fissure, blocks on top of lava in fissure. Pillows coming out of fissure, ERUPTION! | Photo 49 - 52 |
6 | 53 | 1722 | 23 | 422060 | 5079242 | young flow over older near fissure | R494-49 |
6 | 54 | 1722 | 353 | 422060 | 5079242 | Contact where lava has come out of crack | R494-50 |
6 | 54 | 1722 | 345 | 422060 | 5079242 | Near eruptive fissures, young flow on old. where lava erupted out of fissure. Young and old lavas have similar morphologies here. | Photo 54 - 57 |
6 | 55 | 1721 | 25 | 422060 | 5079242 | contact | R494-51 |
6 | 55 | 1721 | 26 | 422060 | 5079242 | Contact again | R494-52 |
6 | 55 | 1722 | 31 | 422060 | 5079242 | fissure eruption | R494-53 |
6 | 56 | 1721 | 33 | 422060 | 5079242 | Photo of east edge of fissure with lava just coming out. | Photos 60's? |
6 | 57 | 1720 | 21 | 422060 | 5079242 | several fissure with lava in bottom. Very close. | |
6 | 58 | 1719 | 22 | 422060 | 5079242 | R494-55 | |
6 | 58 | 1720 | 24 | 422060 | 5079242 | edge of fissure with lava | R494-56 |
6 | 59 | 1723 | 28 | 422060 | 5079242 | Photo of whole fissure | photo 69 |
7 | 0 | 1723 | 32 | 423135 | 5079100 | Narrow eruptive fissure , some bigger pillows. | photo 70 |
7 | 1 | 1722 | 21 | 423135 | 5079100 | contact of flows | Photo 73 |
7 | 2 | 1724 | 30 | 421786 | 5079005 | more of contact of young and old | Photo 74 |
7 | 2 | 1723 | 61 | 421786 | 5079005 | contact | R494-57 |
7 | 3 | 1723 | 60 | 421786 | 5079005 | Larger pile of pillows, harder to see the eruptive fissure. Fissure if only a few meters across. | photo 75, 76 |
7 | 4 | 1724 | 58 | 421786 | 5079005 | Primordial process of seeaflor spreading - "R. Embley 1999" | Photo 78 |
7 | 6 | 1724 | 60 | 425906 | 5079838 | skate | R494-59 |
7 | 6 | 1724 | 60 | 425906 | 5079838 | see a skate | R494-58 |
7 | 6 | 1724 | 56 | 425906 | 5079838 | Fissure seems wider and larger pillows | |
7 | 7 | 1724 | 58 | 425906 | 5079838 | Can still see the edges of the flow. Photos - skate | photos |
7 | 8 | 1726 | 28 | 423231 | 5078522 | Pillow in new flow. about a meter wide | R49461 |
7 | 8 | 1726 | 28 | 423231 | 5078522 | Large pillow of lava - over a meter | R49462 |
7 | 9 | 1725 | 35 | 423231 | 5078522 | Meter across pillows in new flow. | |
7 | 9 | 1724 | 30 | 423231 | 5078522 | West contact | Photo 86 |
7 | 10 | 1724 | 28 | 423231 | 5078522 | new flow about 10m wide, covering the fissure. | |
7 | 11 | 1723 | 27 | 423231 | 5078522 | edge of fissure | R49463 |
7 | 12 | 1723 | 25 | 423231 | 5078522 | Thicker flow | R49464 |
7 | 12 | 1724 | 20 | 423231 | 5078522 | widening out here. | photo 89 |
7 | 14 | 1723 | 18 | 423231 | 5078522 | contact showing that the flow is only one pillow thick, but spread out now. | photo 90 |
7 | 15 | 1723 | 10 | 423231 | 5078522 | East contact , could be 60 m wide here | Photo 91 |
7 | 17 | 1723 | 3 | 423231 | 5078522 | Stopping ship and going 010. | |
7 | 22 | 1716 | 267 | 423231 | 5078522 | Now we're going to go due north. | |
7 | 25 | 1724 | 7 | 425904 | 5080697 | Contact | Photo-92 |
7 | 26 | 1724 | 3 | 425904 | 5080697 | Moving over young lobate lava pillows | |
7 | 27 | 1723 | 9 | 425904 | 5080697 | Beginning to see some hydrothermal staining | |
7 | 28 | 1724 | 14 | 425904 | 5080697 | Young lobate lavas. Waiting for the ship to move. | Photo-93 |
7 | 32 | 1727 | 7 | 426597 | 5081096 | Picture of eastern side of the contact | Photo-94 |
7 | 32 | 1726 | 13 | 426597 | 5081096 | Contact | R494-65 |
7 | 32 | 1726 | 14 | 426597 | 5081096 | Another picture of the contact. | Photo-95 |
7 | 33 | 1724 | 5 | 421811 | 5080068 | Going northwest a bit to get to the top of the pile of the lava pillows. Pillows are a few meters thick. | |
7 | 34 | 1722 | 9 | 421811 | 5080068 | We've come up about 5 m- degrees with SeaBeam data | |
7 | 35 | 1720 | 4 | 423246 | 5079378 | Lobate flows - some hydrothermal staining. Can see some holes where flow was coming through. | |
7 | 36 | 1720 | 2 | 423246 | 5079378 | Top of this pile of lavas - approximately 8 m. | Photos 97 - 100 |
7 | 37 | 1720 | 13 | 423246 | 5079378 | Some brittle stars apparent here. | |
7 | 37 | 1720 | 14 | 423246 | 5079378 | Entering a flatter area here. Rattail. | Photo-101 |
7 | 38 | 1720 | 13 | 423246 | 5079378 | Flatter top area, even depth. | Photo-102 |
7 | 39 | 1720 | 4 | 423246 | 5079378 | Lots of holes where hydrothermal fluid was coming out. | |
7 | 41 | 1722 | 9 | 423349 | 5079440 | Moving into larger pillow lavas on the edge of this. | Photo-103 |
7 | 42 | 1722 | 10 | 423349 | 5079440 | Crab on young pillow lavas | Photo-104 |
7 | 45 | 1721 | 6 | 423326 | 5079486 | Young lavas | Photo-105 |
7 | 46 | 1720 | 12 | 423326 | 5079486 | Smaller glassy lobe-like pillows. Morphology varies from large pillows at edge to flat lobate flow in the middle. | |
7 | 47 | 1719 | 12 | 422217 | 5079965 | Curtain-draped sheet flow | R494-66 |
7 | 47 | 1720 | 15 | 422207 | 5079951 | Looks like we're in this east-west running channel, curtain draped lava flows. | Photo-106 |
7 | 50 | 1720 | 10 | 422206 | 5079975 | Brittle stars- looks like it's flattening out again. | |
7 | 52 | 1720 | 10 | 422211 | 5080020 | Flatter lobes, more hydrothermal staining, more even surface. | Photo-107 |
7 | 52 | 1719 | 8 | 422208 | 5080055 | White colored scale-looking worms | |
7 | 53 | 1720 | 14 | 422212 | 5080056 | These little wormy things are moving very fast- what are they? They're doing the scale worm dance. They're really pale because they're malnutritioned. | |
7 | 54 | 1720 | 10 | 422213 | 5080075 | On the edge of something- a big deep hole- porthole to the subsurface. A big collapse about 5 m deep. Photos 108 and 109 | Photos |
7 | 54 | 1720 | 13 | 422009 | 5080464 | Edge of a big collapse - about 5 meters deep | R494-67 |
7 | 55 | 1719 | 11 | 422208 | 5080097 | Looks sort of post-eruptive. | |
7 | 56 | 1719 | 18 | 422208 | 5080097 | This is a pretty chaotic collapse - looking north to find the edge of it. Looks tectonic-structural trend. | |
7 | 57 | 1720 | 12 | 422208 | 5080097 | Floor is covered with jumbled pahoehoe lavas. | |
7 | 57 | 1718 | 10 | 422196 | 5080116 | We can see the other side of this feature - approximately 40 m wide. It's not a sheet flow. | Photo-10 |
7 | 59 | 1720 | 33 | 422196 | 5080116 | Picture of a gossamer-parachute like creature. | Photo-1 |
7 | 59 | 1719 | 10 | 422196 | 5080116 | Maybe this is the channel we saw last year? Continuing to lateral around here, to the right. | Photo-12 |
8 | 1 | 1718 | 7 | 422196 | 5080116 | Roof collapse | R494-69 |
8 | 1 | 1718 | 11 | 422196 | 5080116 | Rat tail. Edge of collapsed area again. | Photo-14 |
8 | 1 | 1718 | 18 | 422196 | 5080116 | Doesn't really look like a drainout, looks more like a bang." Overhung a lot on the edges. Continuing to the north." | |
8 | 3 | 1720 | 11 | 422196 | 5080116 | Contact northern edge | R494-70 |
8 | 2 | 1718 | 10 | 422196 | 5080116 | Looks like the lava might be thinning out here? Maybe not. Holothurian. Contact. | Photo-15 |
8 | 3 | 1721 | 14 | 422196 | 5080116 | Sudden change to this contact- sudden depth change. | |
8 | 4 | 1721 | 12 | 422196 | 5080116 | Going to go west to see if we can find a fissure going north from here. | Photo-16 |
8 | 5 | 1720 | 14 | 422196 | 5080116 | Picture of contact. Photos 17 and 18 | Photos |
8 | 6 | 1720 | 220 | 422196 | 5080116 | Contact. Moving the ship 10 m to the west so we can go along this contact. | Photo-19 |
8 | 8 | 1720 | 180 | 422196 | 5080116 | Siting over older folded sheets. | |
8 | 10 | 1721 | 174 | 422196 | 5080116 | Lots of brittle stars on the old lavas. | |
8 | 16 | 1720 | 191 | 421169 | 5080255 | Back on the contact | |
8 | 17 | 1718 | 267 | 421169 | 5080255 | Looking west along the contact: tubular-like protrusions finger-like extensions caressing the sheets. | Photo-120 |
8 | 17 | 1719 | 266 | 421169 | 5080255 | Young lobate lava interacting with older sheet flow | R494-73 |
8 | 19 | 1720 | 256 | 421169 | 5080255 | Edge of contact | R494-74 |
8 | 19 | 1720 | 266 | 421169 | 5080255 | Contrast of textures at the contact. | Photo-121 |
8 | 20 | 1719 | 268 | 421169 | 5080255 | A little extension of the flow to the north, northwest, maybe north. | |
8 | 21 | 1719 | 265 | 422122 | 5080370 | Photo of young flow flowing around little remnant mound | Photo-122 |
8 | 21 | 1719 | 265 | 422291 | 5080342 | Picture of crab on new flow | Photo-123 |
8 | 24 | 1720 | 266 | 422291 | 5080340 | Still moving west following the contact - weaving in and out - no fissure. | Photo-123 |
8 | 26 | 1720 | 266 | 422291 | 5080340 | The older flows are changing now into more lobate-like pillow forms. | |
8 | 31 | 1719 | 270 | 422291 | 5080340 | Moving the ship 20 m southwest. | |
8 | 38 | 1717 | 248 | 422291 | 5080340 | Moving ship 20 m to bearing 25 - around northern end of SeaBeam anomaly lava flow. Still unclear if an eruptive fissure extends to the north from here. Trying to find out by going west first, then will go northeast. | |
8 | 45 | 1719 | 216 | 422291 | 5080340 | Still looking at the contact-great contrast between old and new. | |
8 | 47 | 1721 | 171 | 422291 | 5080340 | Having the ship move 10 m to the south, then continue 25. | |
8 | 49 | 1711 | 162 | 422291 | 5080340 | Accidental photo - slippery popcorn hands photo. | Photo-125 |
8 | 53 | 1713 | 184 | 422291 | 5080340 | Another c*h shot ?? | Photo-126 |
8 | 55 | 1720 | 180 | 422291 | 5080340 | Glass on the old lava | R494-75 |
8 | 55 | 1720 | 184 | 422291 | 5080340 | Glass pieces on the old lava. Anemone as well. Pretty close to the contact. | |
8 | 56 | 1721 | 159 | 422291 | 5080340 | Pieces of young lava, exploded pillows, lying on the surface of older lavas. Highlights on. | Photo-127 |
8 | 58 | 1720 | 172 | 422291 | 5080340 | Quite a bit of this fragment material. Going south. | |
8 | 58 | 1721 | 191 | 422291 | 5080340 | Maybe these chunks are from when a pit collapsed. Crinoid. | Photo-127 |
8 | 59 | 1722 | 171 | 422291 | 5080340 | Contact with young lava, with pieces of glass on the old lava. could be due to a collapse. | R494-76 |
9 | 0 | 1724 | 190 | 422291 | 5080340 | Picture of contact, close up. | Photo-142 |
9 | 0 | 1723 | 190 | 422291 | 5080340 | Proceeding to the west. Highlights off. | |
9 | 1 | 1721 | 273 | 422291 | 5080340 | Following the contact. | |
9 | 2 | 1721 | 276 | 422291 | 5080340 | The fragments don't appear to be on the new lava, only the old flows. | |
9 | 3 | 1720 | 274 | 422291 | 5080340 | Picture of contact. | Photo-133 |
9 | 5 | 1720 | 275 | 422291 | 5080340 | We haven't found any evidence of a northward fissure along this east-west contact. Looks like the contact is trending southerly. | |
9 | 8 | 1720 | 274 | 422291 | 5080340 | Going back to the cage for tether management. | |
9 | 10 | 1696 | 94 | 422291 | 5080340 | Back in the cage, now we're heading back to the bottom. | |
9 | 11 | 1717 | 37 | 422291 | 5080340 | Now we're just going to follow the contact, but right now we're in the new lava. Heading north to look for the contact. | |
9 | 12 | 1720 | 2 | 422291 | 5080340 | We're at the contact again. Starfish on the old lava. Heading west. | |
9 | 14 | 1720 | 276 | 422291 | 5080340 | Continuing to follow the contact to the west. | |
9 | 14 | 1719 | 275 | 422291 | 5080340 | We don't see any more of those glass fragments. | |
9 | 16 | 1720 | 277 | 422291 | 5080340 | Approximately 60 m west of the ship's position. | |
9 | 21 | 1716 | 276 | 422291 | 5080340 | Moving the ship 40 m to 340. | |
9 | 27 | 1716 | 344 | 422291 | 5080340 | Crab. Heading north/northwest around 340. | |
9 | 28 | 1716 | 348 | 422291 | 5080340 | A big sponge on the old lava. | |
9 | 29 | 1717 | 348 | 422291 | 5080340 | Picture of old lava near contact | Photo-134 |
9 | 29 | 1716 | 343 | 422291 | 5080340 | Approximately 50 m ahead of the cage- the ROV is probably directly under the stern of the ship. | |
9 | 30 | 1714 | 345 | 422291 | 5080340 | A the edge of a collapsed pit of the older lavas. Some sheet flows. Quite a bit of sediment here. | |
9 | 33 | 1715 | 345 | 422291 | 5080340 | Lots of sediment here- lobate lavas under there. Kind of heading off axis so things are getting older and older. | |
9 | 34 | 1714 | 350 | 422291 | 5080340 | We've found a fissure. Taking a look in the fissure. Looks deep - looks pretty old. Clean straight sides. | Photo-135 |
9 | 35 | 1714 | 47 | 422291 | 5080340 | Deep fissure | R494-80 |
9 | 35 | 1716 | 44 | 422291 | 5080340 | This is a very deep fissure. | |
9 | 36 | 1714 | 2 | 422291 | 5080340 | A crinoid at the edge of the fissure, a crab, a starfish. | |
9 | 37 | 1713 | 30 | 422291 | 5080340 | Still looking at the fissure. | |
9 | 38 | 1714 | 349 | 422291 | 5080340 | Older lobate lobes, lots of sediment between the lobes. Some sponges and anemones on the lavas. | |
9 | 41 | 1712 | 346 | 422291 | 5080340 | ROPOS is still right under the stern of the ship. | |
9 | 42 | 1713 | 343 | 422291 | 5080340 | Older lavas turning more to pillows - still about the same age, though. | |
9 | 45 | 1713 | 356 | 422291 | 5080340 | Looks like we see some of the glass fragments again on the old lavas. Hmmm. curious. | |
9 | 47 | 1712 | 356 | 422291 | 5080340 | Still seeing those little pieces of glass on the old pillows and in the sediment pockets. Must be something new nearby. | |
9 | 49 | 1710 | 355 | 422291 | 5080340 | Looks like there are even more little pieces of glass on the old flow now. | |
9 | 51 | 1709 | 0 | 422291 | 5080340 | Fine particulate glass pieces on top of older lavas. Heavily sediment. Fresh glass shows up dark. | Photo-136 |
9 | 51 | 1709 | 356 | 422291 | 5080340 | Glass on older lava, heavily sediment. | R494-82 |
9 | 53 | 1708 | 359 | 422291 | 5080340 | Inside collapsed pit | R494-83 |
9 | 53 | 1709 | 352 | 422291 | 5080340 | Collapsed area with some pillars. | Photo-137 |
9 | 54 | 1708 | 354 | 422291 | 5080340 | Still seeing the fine particulate dusting of fresh glass on old lavas. | |
9 | 59 | 1707 | 1 | 422291 | 5080340 | Flow is turning into a jumbled mess with collapses. | |
10 | 1 | 1707 | 1 | 422291 | 5080340 | End of the 40m. Now we're going to go 50 m on a 045 course. | |
10 | 2 | 1708 | 48 | 422291 | 5080340 | The cage depth has changed to 1675 m. | |
10 | 8 | 1707 | 44 | 422291 | 5080340 | Looking for new lava. | |
10 | 10 | 1708 | 48 | 422291 | 5080340 | We're in a jumbled zone. Hard to see if the glass deposits are still present. | |
10 | 14 | 1709 | 48 | 422291 | 5080340 | Coming up on some pillars with intact roof. | |
10 | 16 | 1708 | 44 | 422032 | 5080676 | Back into collapse, pillars, some crinoids. Photo of crinoid on top of a pillar. | Photo-138 |
10 | 17 | 1707 | 47 | 422032 | 5080676 | Echinoid on top of pillar | R49485 |
10 | 18 | 1708 | 47 | 422032 | 5080676 | pit with glass in it | R494-86 |
10 | 19 | 1708 | 44 | 422032 | 5080676 | Jumbled lava. Very irregular microtopography. | |
10 | 22 | 1708 | 44 | 422032 | 5080676 | seem to be on a slope that's going to the south. | |
10 | 22 | 1708 | 52 | 422032 | 5080676 | A neat white thing- a sponge? | |
10 | 22 | 1708 | 55 | 422032 | 5080676 | A sponge of a different shape | R494-87 |
10 | 23 | 1708 | 49 | 422032 | 5080676 | Really rough topography here. | |
10 | 24 | 1708 | 46 | 422032 | 5080676 | Spinous lava. Lots of sponges and such. | |
10 | 28 | 1707 | 54 | 422032 | 5080676 | A pretty crinoid. A valve or two in a little pit- a large beautiful pink crinoid. | |
10 | 28 | 1708 | 46 | 422032 | 5080676 | A valve in the small pit with an echinoid on the upper edge. | R494-88 |
10 | 28 | 1707 | 42 | 422032 | 5080676 | Out of the jumble into the lobate now. | |
10 | 32 | 1706 | 49 | 422032 | 5080676 | We've found another narrow fissure. Looks deep. | |
10 | 32 | 1706 | 44 | 422032 | 5080676 | Narrow fissure | R494-90 |
10 | 32 | 1706 | 46 | 422032 | 5080676 | The fissure is only about 20 cm wide. Fairly fresh breaking, but the lava is old. | |
10 | 33 | 1705 | 45 | 425427 | 5080885 | ROV is lagging just a bit behind the stern of the ship. | |
10 | 34 | 1706 | 45 | 425427 | 5080885 | Away from the fissure. In the older pillows and lobates. | |
10 | 36 | 1703 | 45 | 425427 | 5080885 | We're going down slope. | |
10 | 37 | 1705 | 49 | 425427 | 5080885 | A more collapsed area. | |
10 | 41 | 1705 | 46 | 422243 | 5080933 | Going to keep on this course for 50 m (045). | |
10 | 43 | 1705 | 45 | 422268 | 5080947 | Heavily sediment here. | |
10 | 47 | 1702 | 45 | 422253 | 5080978 | Very few tectonic features here | |
10 | 47 | 1702 | 44 | 422253 | 5080978 | no nav just ship positions | |
10 | 48 | 1703 | 51 | 422253 | 5080978 | heavily sediment pahoehoe lava | |
10 | 49 | 1704 | 51 | 422326 | 5080989 | jumbled flow, broken pieces of pahoehoe lava | |
10 | 51 | 1703 | 49 | 422646 | 5080494 | Crab in defensive posture | R494-91 |
10 | 51 | 1703 | 49 | 422646 | 5080494 | crab large and fierce | |
10 | 52 | 1704 | 35 | 422360 | 5080912 | ROPOS is attempting to grab the crab | |
10 | 55 | 1704 | 49 | 423344 | 5080451 | crab leg collected into stbrd bio box | Bio_R494-7 |
10 | 56 | 1704 | 49 | 425626 | 5081474 | fish and crab heading north x=2455 y=0891 was position of crab leg sample above | |
10 | 59 | 1703 | 54 | 422389 | 5081094 | pillow lava | |
11 | 2 | 1704 | 52 | 422423 | 5081094 | New flow/old flow contact | R494-95 |
11 | 2 | 1705 | 51 | 422423 | 5081094 | contact with new lava x=2515y= 0950 all pillows | |
11 | 2 | 1704 | 53 | 422434 | 5081095 | western contact, new flow | R494-96 |
11 | 3 | 1703 | 92 | 422438 | 5081123 | ROPOS is heading east to cross the flow of new lava | |
11 | 4 | 1703 | 86 | 422442 | 5081166 | new lava | photo 139 |
11 | 4 | 1703 | 93 | 422489 | 5080964 | pit | photo 140 |
11 | 4 | 1702 | 98 | 422492 | 5081128 | more collapse | photo 141 |
11 | 5 | 1702 | 95 | 422497 | 5081117 | deep drain out pits in new lava | |
11 | 5 | 1703 | 99 | 422511 | 5081134 | maybe older lava just below ? not sure | photo 142 |
11 | 6 | 1702 | 90 | 422511 | 5081137 | lots of big holes and drain pits | |
11 | 6 | 1702 | 98 | 422545 | 5081099 | pits | photo 143 |
11 | 7 | 1702 | 92 | 422545 | 5081099 | large drain out | photo 14 |
11 | 8 | 1703 | 87 | 422540 | 5081158 | the flow is wide, probably continuous with the flow to the south | |
11 | 9 | 1704 | 90 | 422560 | 5081163 | appear to be out of the drained out area, back to sheet flow | |
11 | 10 | 1703 | 88 | 422582 | 5081138 | big hole | |
11 | 11 | 1704 | 83 | 422633 | 5080641 | x=2603 y=0992 ship pos | |
11 | 11 | 1704 | 87 | 422666 | 5080685 | ROPOS is a little south of the ship pos just given, flow of big collapse area | |
11 | 12 | 1707 | 87 | 422584 | 5081157 | bottom of pit | photo 145 |
11 | 12 | 1708 | 88 | 422584 | 5081157 | up on the wall | photo 146 |
11 | 13 | 1704 | 96 | 422598 | 5081013 | east wall | photo 147 |
11 | 14 | 1703 | 93 | 422422 | 5081492 | flat plates, buckled up area | photo 148 |
11 | 14 | 1704 | 92 | 422625 | 5081161 | photo 149 | |
11 | 16 | 1705 | 90 | 422734 | 5081035 | pillows | photo 150 |
11 | 17 | 1704 | 93 | 422672 | 5081114 | contact on eastern edge | photo 151 |
11 | 17 | 1704 | 91 | 422403 | 5082167 | contact | photo 152 |
11 | 17 | 1704 | 90 | 422403 | 5082167 | Corresponding Eastern contact, after traverse across flow | R494-97 |
11 | 18 | 1704 | 93 | 422670 | 5081166 | turning North to follow the contact for a while | |
11 | 18 | 1704 | 10 | 422670 | 5081174 | Eastern contact of new flow | R494-98 |
11 | 18 | 1704 | 16 | 422670 | 5081174 | contact | photo 153 |
11 | 19 | 1704 | 16 | 422672 | 5081194 | contact | photo 154 |
11 | 25 | 1705 | 177 | 422740 | 5080848 | trying to grab a rock for a rock sample | |
11 | 26 | 1705 | 176 | 422649 | 5081265 | collecting piece of new lava at the eastern contact | R494-99 |
11 | 27 | 1705 | 179 | 422734 | 5080842 | rock is shaped like a lamb chop | |
11 | 28 | 1705 | 180 | 422736 | 5080849 | rock broke off, only a small piece remains | |
11 | 29 | 1705 | 174 | 422672 | 5081148 | might have lost one of the corers, putting the piece of rock into the bag | Rck_R494-8 |
11 | 32 | 1705 | 172 | 422667 | 5081146 | rock has been placed into the bag | |
11 | 35 | 1704 | 3 | 422658 | 5081274 | starting north along the contact | |
11 | 37 | 1703 | 358 | 422707 | 5081032 | x=2727 y=0994 ship position | |
11 | 36 | 1703 | 2 | 422658 | 5081274 | "Island" of old flow surrounded by new flow. Photo - near east contact | R494-100 |
11 | 42 | 1704 | 6 | 422813 | 5080746 | large collapse area to the port | |
11 | 43 | 1704 | 6 | 423657 | 5080807 | still on the eastern edge of a very large collapse area.
there are problems with the highlights tape |
|
11 | 46 | 1703 | 1 | 422666 | 5081244 | still parts of a big collapse area | |
11 | 47 | 1703 | 4 | 422949 | 5081647 | still have a large collapse area to the west of ROPOS | |
11 | 49 | 1703 | 5 | 422677 | 5081256 | x=2730 y=1180 ship's position may be out of the large collapse area | |
11 | 50 | 1705 | 355 | 422647 | 5081299 | large crab | |
11 | 51 | 1703 | 358 | 422766 | 5080822 | collapse area has ended | |
11 | 52 | 1703 | 5 | 422641 | 5081368 | contact x=2729 y=1228 ship's position | |
11 | 54 | 1703 | 1 | 422760 | 5081306 | chrinoid in the old flow , small sponge and stalk chrinoid | |
11 | 57 | 1702 | 1 | 422732 | 5081343 | shallow collapse area, asking ship to turn to 045 to NE | |
11 | 58 | 1702 | 44 | 422756 | 5081345 | ship's position 2732 1322 | |
11 | 59 | 1701 | 50 | 422657 | 5081515 | two stalk chrinoids, sea star, moderately heavy sediment | |
12 | 1 | 1701 | 42 | 422702 | 5081408 | contact with the contact down in x=2741 y=1331 a topographic low | |
12 | 2 | 1704 | 49 | 422712 | 5081373 | new flow into old fissure area | R494-101 |
12 | 3 | 1702 | 47 | 422981 | 5080997 | Hightlights on | |
12 | 4 | 1703 | 47 | 424598 | 5083037 | asking to stop the ship | |
12 | 5 | 1702 | 44 | 422759 | 5080929 | backed up to look again at the NE | |
12 | 5 | 1704 | 50 | 422594 | 5081820 | contact and | photo 15 |
12 | 6 | 1703 | 47 | 422695 | 5081482 | photo 156 | |
12 | 6 | 1703 | 46 | 422695 | 5081482 | new VCR tapes | |
12 | 7 | 1702 | 47 | 422819 | 5080978 | ROPOS turning to the south | |
12 | 7 | 1703 | 193 | 422694 | 5081496 | following a fresh flow | |
12 | 8 | 1703 | 218 | 422694 | 5081496 | highlights off | |
12 | 8 | 1703 | 184 | 421802 | 5080664 | contact | |
12 | 10 | 1703 | 204 | 422682 | 5081502 | asking the ship to move 20m bearing 045 | |
12 | 13 | 1692 | 48 | 422645 | 5081522 | in older lavas heading NE | |
12 | 14 | 1672 | 60 | 422710 | 5081561 | back to cage | |
12 | 16 | 1693 | 33 | 422875 | 5080683 | back on bottom on old flows heading to NE | |
12 | 18 | 1692 | 44 | 422062 | 5080713 | collapse area on the stabrd (collapse pit or fracture) | |
12 | 19 | 1694 | 46 | 422062 | 5080713 | debris falling downslope, debris apron in front of wall, crab | |
12 | 20 | 1700 | 45 | 422944 | 5081163 | ship's position x=2842y= 1428 | |
12 | 21 | 1700 | 45 | 422951 | 5081037 | back up the other side of the wall, lots of mass wasting into the pit | |
12 | 22 | 1690 | 47 | 422859 | 5081365 | less like a collapse looks more like a tectonic feature, rift zone | |
12 | 23 | 1688 | 45 | 422182 | 5080814 | lots of brittle stars, bottom terrain is rugged, old lava | |
12 | 25 | 1688 | 45 | 422836 | 5081526 | crevice cutting throughout the jumbled flow, faults appear to have a NE trend | |
12 | 26 | 1688 | 45 | 422835 | 5081612 | area of old broken pillows and jumbled | |
12 | 27 | 1688 | 47 | 424419 | 5083009 | anemone, crab lots of brittle stars in old jumbled lava | |
12 | 29 | 1688 | 45 | 422592 | 5082403 | heading NE out of jumbled into lobate, back into jumbled | |
12 | 29 | 1689 | 47 | 422872 | 5081607 | 2934 1522 ship's position | |
12 | 30 | 1687 | 38 | 422866 | 5081648 | cucumber, collapse pit full of sediment | |
12 | 31 | 1688 | 3 | 422852 | 5081743 | lobate flows as we go upslope | |
12 | 33 | 1688 | 357 | 422872 | 5081681 | shallow collapse area | |
12 | 34 | 1687 | 355 | 422813 | 5081688 | deep drop of to the port | |
12 | 35 | 1688 | 359 | 422865 | 5081440 | 10 meters deep | |
12 | 36 | 1686 | 359 | 422810 | 5081684 | deep depression full of jumbled blocks | |
12 | 36 | 1683 | 4 | 422686 | 5082140 | pillows moderate sediment | |
12 | 38 | 1681 | 352 | 421233 | 5080454 | nice large pillow structures | |
12 | 40 | 1672 | 6 | 422962 | 5081714 | still in large pillows | |
12 | 43 | 1660 | 358 | 422864 | 5081802 | nice lava tube | |
12 | 44 | 1657 | 356 | 422835 | 5081918 | striations on pillows | |
12 | 45 | 1655 | 356 | 422929 | 5081831 | 2942 1762 ship's position, cage is at 1630m | |
12 | 47 | 1650 | 2 | 422868 | 5081817 | continuing N across the old lava flows | |
12 | 49 | 1651 | 1 | 423799 | 5081461 | rattail fish, still old lava | |
12 | 50 | 1650 | 4 | 424406 | 5083387 | large chrinoid on the old lobate flows | |
12 | 51 | 1650 | 355 | 423048 | 5081343 | deep fissure 7 or 8 meters deep to port | |
12 | 52 | 1649 | 357 | 423793 | 5081958 | moving to port to find the other side | |
12 | 52 | 1651 | 265 | 422844 | 5081934 | western wall, not w/ typical collapse pit. orientation
is E-W
ROPOS will head North, 2937 1909 ship's position |
|
12 | 55 | 1649 | 6 | 422928 | 5081953 | still over large hole | |
12 | 56 | 1652 | 3 | 422857 | 5081954 | deep area is channels | |
12 | 57 | 1649 | 360 | 422856 | 5081982 | contact new lava dripping over | |
12 | 57 | 1651 | 1 | 422856 | 5081982 | dripping lava | photo 157 |
12 | 57 | 1650 | 6 | 422856 | 5081982 | lava dripping over cliff | R494-102 |
12 | 57 | 1650 | 3 | 423097 | 5081393 | lava | photo 158 |
12 | 58 | 1651 | 26 | 423097 | 5081393 | dripping lava | photo 159 |
12 | 58 | 1652 | 35 | 423097 | 5081393 | new lava dripping over fissure in older lava | R494-103 |
12 | 58 | 1652 | 38 | 423097 | 5081393 | 2940 1980 ships position, dripping lava | photo 160 |
12 | 59 | 1652 | 42 | 422583 | 5082054 | new lava drip into fissure | R494-104 |
12 | 59 | 1652 | 27 | 422720 | 5081525 | lava falls, lava stalactite | |
13 | 0 | 1652 | 22 | 422855 | 5081982 | new lava drip into fissure | R494-105 |
13 | 0 | 1652 | 40 | 422855 | 5081982 | new lava drip | R494-106 |
13 | 0 | 1652 | 24 | 423098 | 5081413 | lots of little stalactites | |
13 | 1 | 1652 | 8 | 422857 | 5081983 | new lava above drip | R494-107 |
13 | 1 | 1652 | 6 | 422857 | 5081983 | asking to head east to follow the flow | |
13 | 2 | 1649 | 323 | 422826 | 5081988 | looks like flow just made it to the cliff, we are at the western edge of the flow | |
13 | 4 | 1648 | 267 | 422846 | 5082131 | contact area now heading NE | |
13 | 4 | 1651 | 24 | 422887 | 5081979 | highlights of lava stalactites | |
13 | 5 | 1650 | 76 | 422887 | 5081979 | heading east, appears to be the edge of the flow contact is roughly east-west here | |
13 | 6 | 1650 | 88 | 422977 | 5082009 | heading east to find the source of the flow, now at the edge on the east side | |
13 | 7 | 1648 | 94 | 422977 | 5082009 | heading north along the eastern contact, ship pos 2945 1984 | |
13 | 8 | 1649 | 90 | 422886 | 5082144 | heading east in a thick part of the flow, contact is just to stbd, found a crack highlights on | |
13 | 10 | 1649 | 121 | 422886 | 5082144 | fissure on southern edge of the flow | photo 161 |
13 | 14 | 1650 | 198 | 423162 | 5081458 | contact may be moving south at this point, contact irregular, general trend is hard to determine | |
13 | 15 | 1651 | 184 | 423162 | 5081458 | highlights of, looking at a small group of pillows of the new lava flow on top of the old lava. | |
13 | 16 | 1650 | 225 | 423162 | 5081458 | heading WSW, will follow the eastern contact to the N | |
13 | 19 | 1650 | 8 | 423162 | 5081458 | photo ? | |
13 | 19 | 1650 | 106 | 423162 | 5081458 | photo | |
13 | 19 | 1650 | 48 | 423162 | 5081458 | lava contact | R494-108 |
13 | 19 | 1649 | 130 | 423021 | 5082040 | the source? | photo 165 |
13 | 20 | 1650 | 20 | 423021 | 5082040 | photo 16 | |
13 | 20 | 1650 | 8 | 423021 | 5082040 | flowing into fissure | R494-109 |
13 | 21 | 1650 | 68 | 423080 | 5081712 | very deep hole, lava dripping of the cliff | |
13 | 22 | 1651 | 24 | 423080 | 5081712 | dripping | photo 167 |
13 | 22 | 1650 | 28 | 423080 | 5081712 | flow just made it to cliff, dripped over in a few spots | |
13 | 24 | 1648 | 355 | 423080 | 5081712 | moving to west side of the flow | |
13 | 24 | 1648 | 282 | 423080 | 5081712 | lava is very thin here, the western edge ends in large hole, really flat sheet flow on top | |
13 | 27 | 1649 | 282 | 422983 | 5082087 | collapse structure in young lava | |
13 | 27 | 1648 | 275 | 422983 | 5082087 | still moving west, lava looks young on top | |
13 | 28 | 1651 | 287 | 422869 | 5082054 | moving ship over this position, highlights off | |
13 | 29 | 1650 | 275 | 422869 | 5082054 | jumbled debris in the bottom of the collapse area. | |
13 | 31 | 1647 | 270 | 422869 | 5082054 | changing heading to south along this fissure, waiting for the ship | |
13 | 33 | 1647 | 272 | 423064 | 5081534 | fissure trend is NE-SW, asking ship to move 50m west | |
13 | 37 | 1647 | 279 | 422860 | 5082086 | heading west to look at other side of the fissure | |
13 | 40 | 1648 | 269 | 423818 | 5081604 | moving south, collapse area w/ large pillars. | |
13 | 41 | 1647 | 267 | 423057 | 5081531 | large eruptive area, now the trend is N-S | |
13 | 42 | 1648 | 267 | 423057 | 5081531 | 2890 1988 ship's position | |
13 | 43 | 1647 | 213 | 423057 | 5081531 | edge of the collapse area, asking to change heading to S over the new lava | |
13 | 45 | 1649 | 176 | 423632 | 5081521 | changing direction to the west | |
13 | 46 | 1649 | 268 | 422990 | 5081694 | over pillows, new lava | |
13 | 48 | 1650 | 270 | 422990 | 5081694 | contact flow of new lava right up to old lava | photo 168 |
13 | 48 | 1652 | 272 | 422990 | 5081694 | no new lava up on top | photo 170 |
13 | 49 | 1652 | 269 | 423557 | 5081497 | lava ran up to the wall and was contained, new lava came into an old collapse area | |
13 | 50 | 1650 | 266 | 423557 | 5081497 | looking at the top of the wall, all old lava up on top | |
13 | 51 | 1650 | 357 | 423557 | 5081497 | turning North, contact with a wall | |
13 | 51 | 1650 | 1 | 422971 | 5081689 | drip of new lava of the cliff | photo 171 |
13 | 52 | 1649 | 4 | 422810 | 5082072 | moving to North over new flow | |
13 | 54 | 1648 | 8 | 422810 | 5082072 | highlights off, changing direction to NE | |
13 | 55 | 1647 | 50 | 422810 | 5082072 | flow is getting flatter, small drain out collapse areas. | |
13 | 56 | 1648 | 48 | 422810 | 5082072 | asking to move the ship 015, ROPOS is over the irregular collapse area we visited earlier | |
13 | 58 | 1648 | 48 | 422909 | 5082130 | moving North heading 015 | |
13 | 58 | 1647 | 16 | 422909 | 5082130 | deep drain out area | photo 172 |
13 | 59 | 1646 | 18 | 422909 | 5082130 | very deep drain out area, 10m deep drain out, deepest we have seen | |
14 | 0 | 1646 | 23 | 422817 | 5082190 | large rattail, broken flow, moving right looking for collapse area | |
14 | 1 | 1646 | 19 | 422817 | 5082190 | lots of little windows of small collapse before the big collapse area | |
14 | 2 | 1648 | 16 | 422931 | 5082172 | 2911 2059 ship's position, over lobate new lava flow | |
14 | 3 | 1648 | 19 | 422867 | 5082138 | changing direction to east to try to trace the collapse area | |
14 | 4 | 1648 | 22 | 422846 | 5082221 | contact on east side | |
14 | 5 | 1648 | 18 | 422894 | 5082134 | changing direction back to the NW | |
14 | 6 | 1646 | 6 | 423127 | 5081517 | very jumbled area of the flow near the center | |
14 | 7 | 1646 | 2 | 422868 | 5082150 | changing direction to the NE zigzag | |
14 | 7 | 1646 | 16 | 422862 | 5082153 | over jumbled area | |
14 | 8 | 1646 | 27 | 422870 | 5082157 | hydrothermal staining in the jumbled a like flow, scale worm | |
14 | 9 | 1646 | 22 | 423799 | 5083138 | over pressure ridges, jumbled flows | |
14 | 9 | 1645 | 25 | 423572 | 5082976 | 2941 2170 ship's position | |
14 | 10 | 1646 | 27 | 423940 | 5083252 | new VCR tapes | |
14 | 10 | 1645 | 26 | 423590 | 5082995 | small pockets of white alteration | |
14 | 11 | 1648 | 295 | 424132 | 5083410 | just alteration (white) not mat material in the jumbled flow | |
14 | 13 | 1639 | 355 | 422951 | 5082198 | back into lobate, asking the ship to stop | |
14 | 16 | 1642 | 339 | 422912 | 5082165 | 2964 2238 ship's position, this is where the last core sample will be taken on the jumbled flow | |
14 | 19 | 1642 | 312 | 423500 | 5081650 | two black strips on the core, 7 function arm removed the
core,
5 function arm grabbing corer, 7 function re-grabbing corer |
|
14 | 22 | 1642 | 273 | 422956 | 5082303 | Core sample | R494-111 |
14 | 22 | 1642 | 274 | 422956 | 5082303 | looking at clean wax on the core before deploy | |
14 | 23 | 1642 | 247 | 422909 | 5082183 | rock core sample in the jumbled new lava flow | Rck_R494-9 |
14 | 26 | 1643 | 291 | 422957 | 5082297 | 2962 3337 ship's position for core sample | |
14 | 33 | 1642 | 281 | 423475 | 5081665 | Core sample-black stripes-mashed on BioBox-new flow | R494-112 |
14 | 34 | 1642 | 283 | 422956 | 5082296 | core sample- position x=2965 y=2338 sample #494-9 | |
14 | 38 | 1642 | 283 | 422960 | 5082240 | asking the ship to move 015 about 30m | |
14 | 42 | 1637 | 3 | 422976 | 5082309 | moving over jumbled flow from the new lava | |
14 | 44 | 1635 | 28 | 423032 | 5083037 | possible iron staining on the jumbled flow | |
14 | 46 | 1635 | 22 | 422898 | 5082637 | extensive iron staining in the jumbled flow | |
14 | 48 | 1634 | 15 | 422931 | 5082345 | still over jumbled flow with light sediment | |
14 | 49 | 1632 | 11 | 422938 | 5082368 | possible older lava? | |
14 | 51 | 1632 | 22 | 422947 | 5082375 | 2977 2301 ship's position, still over very confused terrain,
jumbled flow |
|
14 | 53 | 1632 | 17 | 422976 | 5082395 | heading NE another collapsed area w/ columns jumbled lava,
hole is about 10m deep. |
|
14 | 54 | 1631 | 25 | 422975 | 5082397 | Interior still plastic within lava lobe. | R494-113 |
14 | 58 | 1631 | 14 | 423036 | 5082491 | Very rugged terrain, some ophuroids. | |
14 | 59 | 1631 | 15 | 423041 | 5082502 | A lot of topographic changes - jumbled flow now. Broken up flow with some intact pillows. Lots of exploded pillows. Very complex terrain. | |
15 | 1 | 1632 | 17 | 423053 | 5082511 | Swimming brittle star. | |
15 | 1 | 1632 | 17 | 423053 | 5082511 | Very thin crust on the surface of this flow - never had a chance to solidify into a thick pillow crust. | |
15 | 1 | 1632 | 17 | 423053 | 5082511 | Collapsed pit with nice layering in the walls. Sheet flow over the top of the cliff. | |
15 | 6 | 1631 | 18 | 422995 | 5082491 | Mysterious white swimming polychaetes again. Sheet to jumbled to pillow to sheet flow again - quick transitions. | |
15 | 8 | 1630 | 13 | 423049 | 5082548 | Nice, glassy lobate flow with a few ophuroids. | |
15 | 9 | 1628 | 16 | 422995 | 5082520 | Thin pillow lava shells with some exploded out. | |
15 | 9 | 1628 | 16 | 422995 | 5082520 | Unknown seabug - crustacean (basalt flea) | R494-114 |
15 | 9 | 1628 | 16 | 422995 | 5082520 | Stopping the ship, about to change course. Weird white crustacean. | |
15 | 17 | 1629 | 7 | 423045 | 5082732 | Unknown worm (disco worm) | R494-115 |
15 | 17 | 1629 | 360 | 423338 | 5081918 | It's a bug life. worm and crustacean | R494-116 |
15 | 18 | 1629 | 358 | 423046 | 5082727 | Great close up of unknown white 'disco' worm and it's crustacean buddy. Ship moved, now heading due north. Just waiting for some navigation. | |
15 | 22 | 1626 | 351 | 423173 | 5082760 | Pillow flow, moving into lineated flow. | |
15 | 24 | 1627 | 343 | 423071 | 5082611 | 3034, 2510 - ships position at stern. Still waiting for nav and ship to move before heading north. | |
15 | 26 | 1627 | 349 | 423014 | 5082573 | On the move again. Proceeding north. Glassy lobate flow. | |
15 | 30 | 1619 | 4 | 423185 | 5082791 | Glassy lobate flow. We have commentary again. Swimming ophuroid. Lavas with yellowish sediment on them at the bases - is a product of hot rock/see a water interruption of new lavas. | Photo 17 |
15 | 33 | 1616 | 4 | 423881 | 5083417 | Contact of new pillows over old. | R494-117 |
15 | 32 | 1617 | 360 | 424603 | 5083122 | Pillows are becoming bigger and a bit broken up. CONTACT
running north between old and young pillows. Very stark contrast between
glassy, black young pillows and grayer older pillows.
3037, 5283 - ship's position at N-S contact. |
Photo 178 |
15 | 36 | 1611 | 3 | 423403 | 5083047 | Heading back into the new lava. Stopping the ship to head 350 - want to get back to the contact again. | |
15 | 38 | 1611 | 351 | 423335 | 5082995 | Getting into shelly, drained out lobes. Another CONTACT - we are lateralling west facing north. Mixture of old and new flow - the new lava flow is getting thinner. Lots of broken pillows. Heading about 35. | Photo 179 |
15 | 40 | 1608 | 342 | 423046 | 5082728 | see a anemone on older pillow/lobe surrounded by new flow. | R494-118 |
15 | 40 | 1608 | 346 | 423046 | 5082728 | Beautiful huge pink anemone with smaller ones below. | |
15 | 41 | 1608 | 342 | 422969 | 5082673 | Still a mixture of old and new lavas. Moving the ship again to heading 290 to keep up with the new flow. Nice view of a contact point again. | |
15 | 45 | 1606 | 352 | 423039 | 5082750 | New flow contact (L) over older flow (R). Note the thin nature of the newer material (upper left) | R494-119 |
15 | 49 | 1606 | 319 | 423039 | 5082750 | Shallow, collapsed pit. Into drained out lavas. Still waiting for the ship to move. | |
15 | 51 | 1606 | 308 | 423039 | 5082750 | Moving west at a heading of around 290. Drained out lobes with debris al over - exploded lobes, broken up. Getting into flatter, sheet flow rocks - approaching the source of the flow. | |
15 | 54 | 1605 | 301 | 423039 | 5082750 | Hardly any intact lava, most of it is broken up due to drain out. Moving into glassy lobates again, but drain out area seems to be increasing. Photo of large drained out lobe. | Photo 181 |
15 | 57 | 1602 | 296 | 423039 | 5082750 | Going back to the cage to make sure everything is hunky dory. Then stopping the ship and going to head in a more northerly direction. | |
16 | 1 | 1609 | 341 | 423039 | 5082750 | Point of contact. New flow surrounding older lobes. | R494-121 |
16 | 1 | 1601 | 348 | 423039 | 5082750 | Going to head 350 at half a knot. Back at the floor, on a contact - a bum shot, old lavas surrounded by a donut of new lava. | |
16 | 4 | 1605 | 349 | 422981 | 5082671 | Contact again - 2998, 2686. | Photo 182 |
16 | 7 | 1605 | 298 | 422651 | 5081720 | Stopping the ship to head 30. Back on the new lavas consistently. | |
16 | 10 | 1604 | 301 | 423167 | 5081883 | Still waiting for the ship to move. | |
16 | 13 | 1602 | 294 | 423211 | 5081875 | We're moving. Heading 30. Nice collapsed pit. | |
16 | 16 | 1599 | 313 | 422975 | 5082624 | CONTACT again. Nice large pillow. Looks like a major scarp. | |
16 | 18 | 1599 | 318 | 423000 | 5082804 | Pink ophuroid. CONTACT again. Following the contact at a heading of around 30-310. | |
16 | 21 | 1599 | 310 | 422984 | 5082712 | see a anemone on older pillow | R494-122 |
16 | 21 | 1599 | 308 | 422984 | 5082712 | Beautiful pink anemone on the side of a pillow. Stopping the ship for it to move 10m to the west but continuing on the same course. | |
16 | 24 | 1597 | 313 | 423453 | 5081438 | Still waiting for the ship to move. Hanging out on the contact. | |
16 | 30 | 1598 | 305 | 423440 | 5081429 | Ophuroids, a crinoid on ropy sheet flow. | |
16 | 32 | 1595 | 307 | 422915 | 5082724 | Into more complex terrain now - jumbled, broken flow and a big drained out structure. Still no fixes from the southern net - using the stern of the ship for positions. Back into a stream of sheet flow, photo. | Photo 183 |
16 | 35 | 1599 | 308 | 422668 | 5082716 | Ropy sheet flow with sediment in groves, probably mostly pelagic in origin. Ship starting to move again at a heading of 30. | Photo 184 |
16 | 37 | 1599 | 323 | 423732 | 5083623 | sediment in the groves of the sheet flow. | Photo 185 |
16 | 39 | 1597 | 310 | 423725 | 5083628 | Moving from the sheet flow into more rugged terrain. Very sparse biology. A big push up structure with a large collapsed drained out area behind. | |
16 | 40 | 1595 | 317 | 423725 | 5083628 | Climbing up a cliff with rubble talus at the bottom. Some yellowish sediment that may be hydrothermal in origin. Moved into very rough terrain - jumbled flow. | |
16 | 43 | 1593 | 313 | 423744 | 5083688 | Traversing over very broken up lava, jumbled flow in a collapsed area. | |
16 | 47 | 0 | 0 | 0 | 0 | Photos of the very broken up lava. Photo 188 of a big block with lots of sediment at the bottom. Rough terrain with many jagged blocks. (photos 186 - 189) | Photos |
16 | 47 | 0 | 0 | 0 | 0 | Strange swimming white polychaete again. Big rattail. Still very jumbled, rough flow. | |
16 | 53 | 1592 | 316 | 422727 | 5082816 | 2704, 2831 - ships position at stern. Still traversing jumbled, broken up flow. Swimming polychaete again. | |
16 | 55 | 1592 | 316 | 422727 | 5082816 | Lots of pushed up ridge structures. We are moving perpendicular to them. | |
16 | 56 | 1591 | 309 | 422727 | 5082816 | Photo of rattail and jumbled lava. | Photo 190 |
16 | 56 | 1592 | 308 | 422689 | 5082881 | Rattail for scale - probably around 50-60 cm long. Lasers for scale. | |
16 | 58 | 1592 | 322 | 423227 | 5082929 | Note: red laser points are 10 cm apart. | |
17 | 0 | 1593 | 307 | 423325 | 5082423 | see a star (plump) on old lava flow | R494123 |
17 | 0 | 1592 | 312 | 423325 | 5082423 | Lobate flow for a few meters. Back into jumbled, broken ropy flow. A photo of a plump asteroid. Now ropy sheet flow again. Back up along a pressure ridge, into lobate flow. | Photo 19
Photo 192 |
17 | 2 | 1592 | 316 | 422585 | 5082884 | Broken, jumbled flow again. | |
17 | 4 | 1591 | 316 | 422585 | 5082884 | Very broken up flow into lobates again. Probably nearing a contact point again because of lobates, slower flow. | |
17 | 6 | 1592 | 316 | 422569 | 5082920 | large pit, sediment | photo 193 |
17 | 7 | 1591 | 316 | 423190 | 5082442 | more of the big hole | photo 194 |
17 | 7 | 1591 | 306 | 423177 | 5082448 | Overhanging rim. Still in lobate flows, with intermittent collapsed structures about 3 m deep. | Photo 195 |
17 | 9 | 1591 | 319 | 422625 | 5082852 | Into a ropy sheet flows. | |
17 | 11 | 1592 | 314 | 422625 | 5082852 | Jumbled flow, brecia at the bottom of a push up feature. Photo of blocky, hackly lava. | Photo 196 |
17 | 13 | 1593 | 312 | 422625 | 5082852 | Had to reset the Imagenex. | |
17 | 15 | 1595 | 311 | 422625 | 5082852 | A couple swimming polychaetes again. Still in jumbled, blocky flow. Very broken up. | |
17 | 17 | 1594 | 322 | 422388 | 5083018 | On top of a hill/ridge structure. Big broken blocks. | |
17 | 19 | 1596 | 312 | 422388 | 5083018 | Back into lobate flows. | |
17 | 21 | 1600 | 321 | 422388 | 5083018 | Lobates mixed with broken up flow now. More continuous lobate flows again. | |
17 | 24 | 1600 | 317 | 422297 | 5083071 | Into jumbled, broken, blocky flow again. Some old lava peeking through - new lava crust quite thin here. | Photo 197 |
17 | 27 | 1601 | 277 | 422976 | 5082500 | Heading west to try and find the contact. Pillow lavas. | |
17 | 30 | 1604 | 304 | 422391 | 5083043 | Drain out structure with a small column supporting the roof. Still lobate surface with drained out areas. CONTACT point: 2184, 3139. | |
17 | 31 | 1604 | 324 | 422391 | 5083043 | Stopping the ship. ROPOS is 60 m NE of the stern of the ship - where the above fix was from. Moving ship 50 m to the east, then starting on a heading of 045. | |
17 | 35 | 1598 | 56 | 422074 | 5085359 | Bob thinks new flow is about 90 m wide. Waiting for the ship to move. | |
17 | 41 | 1598 | 45 | 422074 | 5085359 | We're moving again - heading northeast. On old lavas now. | |
17 | 44 | 1598 | 48 | 422206 | 5083150 | 2206, 3159 - fix of stern of ship. | |
17 | 44 | 1597 | 44 | 422206 | 5083150 | Crinoid and asteroid on old lava. | |
17 | 49 | 1593 | 43 | 422206 | 5083150 | Still on the old lavas heading 045 - lots of holothurians. Edge of a collapsed pit, into the new lava again? 2282, 3286 fix. | |
17 | 52 | 1589 | 46 | 422276 | 5083225 | Still in old pillow lavas - that jumbled bit of flow may have been a channel of new lava passing through the old flow. | |
17 | 53 | 1587 | 50 | 422316 | 5083267 | Old lavas. Beautiful slender asteroid, crinoid, ophuroids. | Photo 199 |
17 | 56 | 1584 | 45 | 422316 | 5083267 | Sunken area with a wall of large pillows - coming up a slope. x=2404, y=3362 fix. | |
17 | 58 | 1578 | 48 | 422343 | 5083334 | Still climbing up the wall. Highlights on. Nice big pillows with lots of biology. Come up about 9 meters now (18:01). | |
18 | 1 | 1568 | 45 | 422872 | 5082784 | 2527, 3478 fix. Tons of sponges on the old lava, some holothurians, an asteroid (18:02). | |
18 | 4 | 1567 | 36 | 422131 | 5084096 | Stalkless crinoid on old lava flow | R494-124 |
18 | 4 | 1567 | 38 | 422131 | 5084096 | Photo of a stalkless crinoid. Still tons of sponges. Huge plump starfish (18:05). | Photo 20 |
18 | 7 | 1563 | 46 | 423145 | 5082693 | Highlights are off. Fix: 2642, 3602. | |
18 | 10 | 1559 | 35 | 422700 | 5083642 | seem to have reached the top of the ridge/hill structure. There were tons of sponges and other biology on the slope, Fix: 2736, 3684. | |
18 | 18 | 1518 | 227 | 422825 | 5083759 | We have been having some problems with the tether for the past 10 minutes or so. The ship is stopping so we can get back to the bottom. | |
18 | 23 | 1525 | 23 | 422709 | 5083710 | Back at the cage. | |
18 | 27 | 1528 | 20 | 422709 | 5083710 | Lost video on the sub. Is power down? The tether went again. Coming back up. | |
18 | 36 | 1528 | 20 | 422709 | 5083710 | Dive Summary: ROPOS Dive R494 was a continuation of the two previous dives, which were ended early. | |
The objective was to determine if the 1998 eruption was continuous between the northern, well-mapped area and the southern SeaBeam anomaly (visited last year on R465), and to map out the extent of the 1998 lavas. | |||||||
This dive started about 800 meters south of the southern SeaBeam anomaly (1200 m south of the R465 dive track) on Axial's South Rift | |||||||
The pre-1998 lavas were much older here, in general, than further north (near Bag City Vent), allowing the 1998 lavas to be easily distinguished. About 500 meters south of the southern SeaBeam anomaly ROPOS encountered a fissure with '98 lavas in the | |||||||
bottom. As ROPOS approached the anomaly, the lavas overflowed the fissure and spread outward. This was clearly the surface expression of the dike that fed the eruption. North of the southern SeaBeam | |||||||
encountered it again after we traversed back to the NE, about 700 meters NE of the north edge of the anomaly. The '98 lava here was ~200 m wide, but as we followed it north, it narrowed and eventually pinched out completely about 400 m further north. | |||||||
This '98 lava is probably connected to the southern SeaBeam anomaly. The '98 eruptive fissure along this part of the SRZ was further to the east than we had expected, based on bathymetry. For example, it is 350 meters east of the large cratered mound | |||||||
at 45 52.85'. ROPOS crossed the trend of the '98 eruptive fissure again, 600 meters further north and again young '98 lava. There was a big drained out lava lake in this area. '98 lava was followed another 200 - 300 meters along axis, and then ROPOS | |||||||
crossed another 200 - 300 meters of older lava, before reaching the eastern contact of more new lava. The sub then traversed to the NW and was in '98 lava for ~ 800 meters. Once at the western contact, ROPOS turned to traverse NE, but did not cross '98 | |||||||
lava again. The traverse to the NE was never completed because ROPOS telemetry was lost and the dive ended prematurely. At the end of the dive, ROPOS was about 1000 meters NNE of the last crossing of '98 lava (and west of where it would be expected), | |||||||
and about 1150 meters south of the traverse on Dive R493 (and about 100 meters west of the '98 lava contact from Dive R493 if extended southward). In summary, the '98 eruption appears to be nearly continuous from its northern end, south to almost 1 km | |||||||
south of the southern SeaBeam anomaly. In this area between the two, the eruptive fissure changes orientation from north-south in the north |