Time |
Heading |
Depth (m) |
Comments |
949 |
267 |
2647 |
Sedimented lobates, some elongated pillows. Age 2.5-3. Collapse,
trending perpendicular to the sub, 2m deep. |
950 |
|
|
Now seeing primarily pillows. |
951 |
|
2646 |
Over a 3-5 m deep fissure. Rubbly terrain at base. Lobates
in wall in front of us. Pillows, age 2.5-3 on top. |
952 |
265 |
|
Down a large step, >5m. Wide fissure? Rubble/talus rampart
coming off the wall behind us. |
953 |
|
2647 |
Last down drop was a step, not a fissure. 13m (15-2m flight
alt.) total dropoff. No nav. |
954 |
|
2661 |
19 m off bottom. |
956 |
264 |
2674 |
7 m off bottom is elongate pillow lavas with lots of ornamentation,
bulbous forms as well, less sedimented. Age 2 or less. Large
fissure below, 5-6m deep. Wall in front of us. Truncated pillows. |
958 |
|
2675 |
Large collapse next to us. Approaching next step down/graben.
Elongated pillows, age 2. Definitely less sediment than we saw
up on top. Saw one elongated pillow clearly truncated by edge
of dropoff. |
1000 |
|
2685 |
5 m off bottom. Using citcam. Lobate lavas beneath us. |
1001 |
264 |
2688 |
3m off bottom. Few pillows but primarily lobates. Getting
occasional nav fixes. Lots of cracks in the rocks. Seeing white
staining in cracks. Also some brown Fe-oxide staining. Surfaces
are fissured. |
1003 |
|
2689 |
Sample stop. On edge of small fissure trending ~ perpendicular
to the sub. Lobates. Truncated lobates evident in the fissure
wall. Age 2. Even dusting on things but not as much as up on
eastern high. |
1006 |
|
2688 |
Sediment in water, hard to observe on pan and tilt. In age
2 lobates. Sitting directly over a narrow fissure. |
1009 |
31 |
2689 |
Small fissure is <1m wide. Can see down it on video. Age
2 lobates. |
1015 |
|
2689 |
Sample 3355-2 - lobate crust, 10 cm long
into basket 1b. Dig pic #2. |
1017 |
|
|
underway again. Go back to heading of 263. |
1018 |
264 |
2685 |
Ship not getting nav on us either at present. Age 2 sedimented
lobates. |
1019 |
|
2687 |
Approaching vertical wall of 1 m or so. Lobates in wall.
Talus at bottom. Age 2 lobates on top. Broken up near edge but
untectonized a couple of m from edge. Bottom dropped away again.
Lobate sliver standing up in larger fissure. |
1021 |
|
2684 |
Lobates. Lots of talus. |
|
|
2682 |
Talus slope. Sizes 5-20 cm in diameter fining as we move
up hill. White staining on some surfaces. Almost no sediment.
Looks fresh. |
1023 |
266 |
2666 |
Approaching a wall, truncated lobates in face. 12 off bottom,
9m step up. Lobates on top. |
1024 |
265 |
|
Down a 1m step, lots of fracturing to surfaces of lobates.
Rubbly. |
Time |
Heading |
Depth (m) |
Comments |
1026 |
258 |
2670 |
Shelly lobates transitional to sheets. More sediment cover.
Broken surfaces. Smooth plane of sediments to port broken by
little edges of flow crust. Flow dips off to port, ~perpendicular
to sub heading. Age 2.5. Same apparent sediment age as the landing
site. Ornamented pillows on 1st step down early in dive was youngest
seen so far. No sample though. |
1027 |
|
2668 |
Approaching edge of fissure. Sheet lavas at edge. 3m deep
into narrow fissure. Sheets on the other side. |
1028 |
|
2667 |
Extinct sulfide chimney. |
1029 |
|
2665 |
Couple of extinct sulfide chimneys down in a small fissure.
Lots of orange sediment around. |
1030 |
|
|
Still heavily sedimented, lots of pockets of orange-brown
sediment in and amongst pelagic sediment. Can barely see surface
of lava. Rubbly sheet flows? No, appears to be tops of small
extinct chimneys. Extinct chimney field. |
1031 to 1032 |
257 |
2663 |
Over very sedimented terrain. Small amounts of orange and
white staining to sediment. Small fissure trending perpendicular
to the sub (~ N-S) . Small broken up (extinct) sulfide edifice
to port. Approaching a very large (extinct) chimney. Enormous
extinct chimney. Lots of orange staining. At least 6-8m high,
broad base (as wide as the sub). Somewhat broken up. Within of
the chimney we crossed a very narrow, deep fissure. Put on citcam.
Can see lobates and sheets in the wall. More sulfide chimneys
on the other side. They straddle the fissure. Chimneys are also
large. Squat at the base. |
1033 |
|
2661 |
Sedimented sheet flows. Heading upslope. No chimneys. Chimneys
and fissures were in the center of this past "step".
Extensive sediment cover. Just surfaces of sheets occasionally
poking out on folds. |
1034 |
258 |
2657 |
Heading up talus ramp to the right (oblique slope). Port
sees smooth sediment. Edge of talus pile just poking out beneath
the sub. Edge of small collapse oblique to strike of ridge? |
1036 |
260 |
2646 |
6m off bottom. Over very broken up terrain. Lots of talus.
Semi-linear ridge of lobates going off at heading of ~330 relative
to the sub. Approaching wall. Talus beneath us. Wall has truncated
sheets and lobates. Very thin layers. |
1038 |
|
2630 |
Very broken up lobates on a ridge line in center of collapse.
Small pits to port that are ~5m deep. Also seeing fissures. Approaching
a step. Areas is a series of sedimented narrow ridgelines and
broken up areas in between. Small, 3m step, then large step down
after that. |
1040 |
|
2628 |
Flying 12m off after last step down. Deep depression beneath
us. Just barely visible on citcam. Sedimented terrain with broken
up material. Batteries are replaced in Bill's tape player. |
1041 |
|
2632 |
More extinct sulfides on floor of deep sedimented fissure
(small "mini graben"). 9m tall chimney (sub is 9m off
bottom and top is right beneath us). |
1042 to 1043 |
|
2633 |
Approaching floor again. Elongated pillows, very sedimented.
Small fissure (2-3m deep) trending roughly perpendicular to the
sub. Then, large 7m step down (from 4m alt to 11m alt.). Broken
up pillows, ground sloping away. |
1044 |
259 |
2642 |
Wall in front of us. Talus rampart leading up to it. |
1045 |
|
2637 |
Talus terminates into a wall. Almost no sediment on talus.
Wall is truncating lobates. Top of wall is sedimented lobates.
Age 2-2.5. |
1048 |
247 |
2625 |
Traversed back up other wall. Age 3. Elongate pillows just
poking out of sediment. Near target depth of WP2. No nav. Ship
fix: 114m out. |
Time |
X |
Y |
Heading |
Depth (m) |
Comments |
1148.5 |
3904 |
9618 |
|
2675 |
Traversing a wall. Almost no sediment on preceding talus
pile with anenomaes. Few crabs on top of the wall. Wall is lobates |
1150 |
3930 |
9607 |
114 |
2655 |
Wall dropped off again on other side. Thin remnant block
(~2 m across). |
1152 |
3959 |
9597 |
|
2658 |
Approaching another talus rampart. This one is a little bit
more sedimented. Ascending steep wall now, already up 13m and
still rising. |
1153 |
3974 |
9594 |
|
2645 |
Altitude 19m. Quite a wall. Will attempt to sample. |
1158 |
|
|
158 |
2645 |
Sample 3355-5 - taken from top of 20m high
wall on east side of valley. |
1159 |
3987 |
9593 |
|
2643 |
Sample was a tabular piece of lobate crust that went into
basket 4. About 15 cm long. Dig. photo #5. |
1200 |
4016 |
9583 |
|
2642 |
Ship fix: ~300m 110 from WP3. Another wall at 10m away on
CTFM sonar. |
1201 |
|
|
|
|
Heavily sedimented terrain at top of wall. Can barely see
flow surface. It appears to be lobate lavas. |
1202 |
4045 |
9572 |
|
2641 |
Alt 6m. Hovering over pillows transitional to lobates. Lots
of sediment (age 2.5). Collapses but no fissures. |
1203 |
4066 |
9565 |
|
2646 |
Passing small linear fissure, in lobate lavas. Then a second
wide fissure (10m across). Rubble at base of approaching wall.
Less sediment here, but more sediment than the rubble we saw
further down slope. Now flying up the wall. |
1204 |
4013 |
9553 |
118 |
2640 |
Passed over 10m of high standing sea floor. Now ascending
again. 4m off bottom. |
1205 |
4118 |
9548 |
|
2638 |
Floors of mini grabens are uneven and jumbled. Just passed
small fissure. Now entering very flat, heavily sedimented terrain.
Age 2.5. Can barely see lobate shells sticking out. Small fissures
(few cm across) trending 270 to the sub. |
1207 |
|
|
126 |
2636 |
On top of east wall? Heavily sedimented terrain. Lobates
poking through sediment. Another drop off in front of us. 120
m out from WP3. Still significant fissures up on apparent summit. |
1208 |
4164 |
9529 |
|
2639 |
Crossed a fissure. In pillows transitional to lobates. Somewhat
less sediment than we saw just 20 to 30m ago on local ridge.
Transiting into heavily sedimented lobates that is the same as
on the ridge. Maybe it just looks greater on low-relief lobates. |
1209 |
|
|
135 |
2637 |
Transitioned out of heavily sedimented terrain into talus
slope with almost no sediment on it. Significantly younger than
material it came from. Crossing small 1/2 m deep fissure. Can
see broken up lobate crusts. Off to port can see small collapse
in lobates |
1210 |
4400 |
9594 |
136 |
2636 |
Came across another 20m wide fissure. Talus slope at base
as we come to opposing wall. Truncated lobates in wall. Not too
much sediment on talus, wall is a narrow arete, dropping off
5m on back side. Isolated block. In sedimented lobates on top.
Fissures look relatively young. |
1212? |
4227 |
9489 |
140 |
|
45m from WP3 |
1213 |
4234 |
9481 |
151 |
2637 |
Approaching another scarp. Fissure beneath us. Looking for
place to sample on other side. Citcam shows talus in fissure.
Flying high. Can see rubbly lobates in fissure. |
1215 |
4234 |
9481 |
|
|
Ship puts us at WP3. Over a collapse pit. Truncated lobate
shells in wall. One well preserved. Heavily sedimented just beyond
the wall. |
1216 |
4234 |
9481 |
159 |
2643 |
Attempting sample 6 from a lobate crust on the top of a scarp. |
1219 |
4234 |
9481 |
|
2643 |
Sample 3355-6 - into basket 8. Large piece
of lobate crust, Mn-oxide staining on bottom. 25 cm in longest
direction, triangular in shape. Will make way for WP4. |
Time |
Heading |
Depth (m) |
Comments |
1221 |
|
|
Underway to WP4. |
1222
to
1225
|
238 |
2638 |
Fissure opening to broader collapse to port. Trending roughly
perpendicular to heading of sub. Heavily sedimented lobate terrain.
Age 2.5. Ship fix: 1355m to WP4. Just passed through a larger
collapse. Rubble at base. See shattered pillows in talus. Approaching
wall. 5m off bottom. Wall is 8m high. A narrow ridgeline that
drops off on other side. Very tectonized surface. Some sediment
cover but not too extensive. Passed another fissure-ridge. We
go up-down-up-down in heavily sedimented terrain away from fissures.
Down in fissures there is some sediment too, although less than
ridges. Sediment age 1.5 to 2. Unfissured pillows just poking
up through sediment appear to be sediment age 2.5. |
1227 |
236 |
2636 |
Ascending another wall in a fissure. Heavily sedimented,
just a few lobates poking through. |
1228 |
|
2634 |
Another step up. Seeing talus at base of wall in wide fissure.
Floor sediment age 2.5. |
|
|
2635-4 |
Heavily sedimented pillows transitional to lobates, age 2.5-3,
poking out of sediment. Small fissure, 10 cm across. Vertical
drop beneath us, 17 m high. Now approaching flow. |
|
239 |
2641 |
13m off bottom |
1232 |
|
|
Bottom in view. Old sedimented lobates, broken up into tabular
pieces. Sediment age 2.5. |
1233 |
236 |
2653 |
Coming back down wall. Seeing some small fissure too into
lobate flows in between regions that are heavily sedimented.
Little bits of lava poking through, age 2.5. |
1234 |
238 |
2648 |
Jumbled, ribbon folded sheet flow flooring base of graben
is overlain by talus slope at base of a wall. 9m off bottom.
Going oblique to scarp. Can be seen on starboard side (means
it is outward facing from main graben) apparently there are pillows
and lobates in the wall. I see only talus rampart. |
1235 |
|
2643 |
On local summit. |
1237.5 |
238 |
2648 |
Over heavily sedimented lobates. Approaching talus rampart.
Looks just like our ascent of this wall. |
1238.5 |
|
2642 |
Over narrow, 4m wide "high" with lobates on top,
walls on either side dropping down into fissure, rubble at base.
Away from fissure is heavily sedimented terrain. Almost nothing
poking through sediment on another local high of possibly sheet
flows, which then drops down again into another fissure. Lots
of fissures here. More tectonized terrain than not, as we descend
the wall back into the main graben. Mostly lobates transitional
into sheets (tabular, thin flows) seen in walls. Sediment age
might be less on broken up surfaces but this may be an artifact. |
1241 |
|
2658 to 2660 |
3m off bottom. Very broken up shelly lobates. 5-6 cm thick
with big void spaces between them. Lots of rubble and fissures.
Not too much sediment. Surface broken up like plates. Now up
on age 2 local high. Sediment in pockets and dusting on flows. |
1243 |
237 |
2660 |
5m off bottom. Going down another step. Wall behind us, blue
water in front of us. |
1244 |
240 |
2675 |
16m drop off. Flying 15m off bottom. |
1245.5 |
238 |
2688 |
Bottom has starfish. Bulbous pillows, significantly less
sediment. Coming up small slope. See elongated pillows too with
breadcrust texture on surface. |
1246 |
|
2688 |
Stopping for sample of striated bulbous pillows. |
1251 |
|
2689 |
Mosey along to look for sample. Still in less sedimented
striated pillows. Mostly down east wall (actually at bottom according
to depth). |
1252 |
|
|
Still looking for sample. Pillows transitional to lobates.
Same sediment cover, just different flow morphology. |
1257 |
|
2689 |
Still looking for sample. |
1301 |
|
2689 |
Sample 3355-7 - into basket 3a. 7 cm long
pillow bud with warts.
ship fix, 500m 270 out from WP4
|
1303 |
244 |
2689 |
Underway again, in least sedimented stuff of the day (age
1.5-2). Over ridge of bulbous pillows. Seeing fissure truncating
pillow lavas. A few ridges of pillows ~3m across up middle of
fissure. Broken up pillows on fissure floor. Almost no sediment
down in 3m deep fissures. |
1305 |
242 |
2690 |
Pillows transitional to lobates. Still plenty of fissures,
~perpendicular to the sub. Not much sediment, obviously lobates
show more sediment than pillows, some pockets evident. Age 1.5-2. |
1306 |
|
|
1 minute since last fissure. Untectonized terrain. Mostly
lobates. Few small pillows with ornamentation. Elongated forms
trending roughly perpendicular to the sub. Down axis strike,
roughly. |
1307 |
|
2692 |
Broken up rock fragments of lobates and pillows, going up
small hill. Not a fracture or scarp. Gentle slope. |
1308 |
242 |
2689 |
Now hitting true talus slope. Climbing. |
1309 |
|
2670 |
Flying up big wall (away from port side), already up 12m.
Just passed deepest part of axis. Can see wall on video. Broken
up lobates |
1310 |
280 |
2664 |
On top at Alt 19 m. Big throw fault. Lots of fresh talus
at edge, then another fissure just back from edge. Yet another
wall in front of us. |
1311 |
|
2662 |
4m high lava pillars. Elongated features rather than simple
tall statues. These are broad pedestals with linear features
on them. Going to come about to sample them. Didn't see these
pillars on 2 northern crossings. Saw rubbly surfaces and extinct
hydrothermal chimneys. On new segment? |
1313 to 16 |
|
2664 |
Sample 3355-8 - into basket number 9. Lobate
crust of pillar sampled from very top. Getting underway again. |
1318 |
211 |
2662 |
Pausing in interesting terrain. Very large elongated lava
"pillars". Tabular sheets to the walls above us, transitional
to lobates, than a talus slope. Looks like a collapse exposed
this thing. We are in the collapse. Can see linear bathtub rings
in walls and on pillars. |
1320 |
|
2664 |
Lots of broken up terrain. |
1321 |
|
|
Hovering over collapsed lobates. Lots of thin shelly layers
to the lobates. Local pockets of heavy sediment. Then less sedimented
broken up surfaces. Looks like tectonism is relatively young
here. |
1323 |
209 |
2663 |
Broken up lobate crusts. Lots of rubble. Bill sees pillars
to starboard. Some collapse features on port. Shelly lobates
break up and drop down a meter. Very clean break. Not too much
sediment here, ~age 1.5. Seeing big extinct hydrothermal mound.
Lots of orange staining at base. 2 chimneys, ~1.5m tall but very
broad, 6m, at base. Deep (3m) collapse off to port. |
1325 |
|
2663 |
At WP4. Come about to WP5 on heading of 145. |
1325.5 |
|
|
Executing turn. In collapsed lava lake terrain. |
1327 |
145 |
2664 |
Still no nav. |
1328 |
|
2665 |
Broken up lobates. Shattered pieces everywhere. Not much
sediment cover. Age 1.5. In center of collapse. No pillars yet
on this traverse. |
1329 |
|
2661 |
Now seeing a couple of very tall pillars off port side. 10m
high. Bill and Bob see extinct hydrothermal chimneys. Seem to
be in center of lava lake. Seeing more biology. Lots of anenomaes
and crabs. |
1331 to 1332 Changed Alvin and 3 Chip videos.
Now on Tapes 3. |
1332 |
|
2671 |
In area of diffuse flow hydrothermal venting. Lots of white
staining on rocks. In a talus pile. Lots of crabs and white fish
around. We are still down in lava lake collapse. |
1333 |
|
2677 |
Diffuse flow site. Small area (<10m across).
Seeing some warm shimmering water. Not super dramatic in terms
of chimneys. Lots of biology. [Said on tape this was on eastern
side of axis but looking at map this is not right]. |
1336 |
|
2668 |
Flying high. Citcam shows lots of rubbly terrain. |
1337 |
085 |
2679 |
Ribbon folded sheet flows, broken up. On diversion from track
to investigate a circular thing on CTFM that turned out to be
a rock pile. |
1338 |
145 |
2680 |
5m of bottom |
1339.5 |
|
2690 |
Lobates. Untectonized. Age 1.5, small, very ornamented pillows
interspersed in there too. |
1342 to 1343 |
|
2692 |
Stopped in center of graben to get sample 9. Moving slowly
in nice bulbous pillows with striated surfaces. Lower relief
lobates too. Plus some starfish. Looks relatively young, age
1.5. |
1347 |
|
2694 |
Still looking. In pillows transitional to lobates. Will try
for lobate. |
1353 |
155 |
2692 |
Going to migrate for sample. |
1356 |
|
2693 |
Sample 3355-9 - into basket 3b, dig. photo
10. Pillow bud fragment, 5 cm long from relatively untectonized
part of graben floor, age 1.5 pillows transitional to lobates. |
1359 |
150 |
2689 |
Underway for 2 minutes towards WP5. Underway at 1358 |
1401 |
151 |
2684 |
Similar terrain for last few minutes. Seeing first fissure,
trending roughly perpendicular to sub (180 absolute). Now approaching
another fissure. Transitioned quickly from untectonized to tectonized
terrain as we approach eastern margin of graben? No, those appeared
to be lone fissures. Back into untectonized lobates, few ornamented
bulbous pillows. Age 1.5. Now seeing more rubble. |
1404 |
|
2677 |
Lobates. More broken up pieces on sea floor. No fissures
but lots of broken lobate pieces. Some small bulbous pillows
as well. |
1405 |
|
2676 |
Into area with more elongated pillows with delicate ornamentation.
Seeing hydrothermal staining out front and starboard windows.
Lots of tectonized pieces of pillow fragments. Seeing ridge,
~2 m high off port. |
1406 |
151 |
2673 |
Big wall in front of us. Truncated lobate and thin sheet
flows in wall. Somewhat more sedimented on top. Upper surface
is lobates, 4m wide, then it drops off again to rubbly terrain |
1407 |
|
2674 |
Heavily tectonized area. Gigantic blocks of lobate flows.
Can see (truncated) lobates and pillows in wall in front of us.
Big step up. |
1407.5 |
151 |
|
Climbing straight up. |
1408 |
150 |
2667 |
At top. Significantly more sediment cover. In ribbon folded
sheets. Then another little wall with talus at base. In heavily
broken up jumbled sheet flow transitional to lobate. |
1409 |
149 |
|
Making a 180 turn so we can go back to sheet flow for a sample.
We have already transited out into big blocks of heavily fractured
lobates again that are very sedimented. 15-20cm wide fissures
heading away from the sub at 140 breaking up the flow. |
1412 to 15 |
|
|
Looking far sample 10. Bob took a 1m long piece of lobate
crust that was a beauty but we made him put it back. |
1419 |
347 |
2667 |
Sample 3355-10 - into basket 6a. 15 cm long
x 4cm thick piece of lobate crust, lots of Fe-staining on it.
But it looks relatively glassy. |
1422 |
|
2668 |
Going over a fault scarp over blue water. Ship fix: 130m
110 from WP5. Not quite across graben yet. |
1424 |
|
|
Lobates in wall in front of us. Age 2 sediments on top. Back
to sampling location of a few minutes ago? |
1425.5 |
122 |
2667 |
Over sedimented, tectonized lobates. Tabular sheets, broken
near the edges by a fissure. Sheets transition into lobates.
Still age 2. Dull, flat terrain away from fissures |
1427 |
118 |
2665 |
Transitioned into broken up lobates. Ascending small hill.
Turned out to be a talus rampart. |
1429 |
123 |
2644 |
Over fissures. Very wide fissure in front of us. Just flew
over a small ridge in it. Very sedimented. We came up a 10m wall,
went over few m wide ridge, then dropped back down. |
1431 |
121 |
2642 |
Going up another hill of very broken up lobates. Went up
over small spur then it dropped off again. East side of graben
has benches and large down dropped blocks. Flying over blue water
now |