[02:49:29] kennethsulak leaves the room [03:29:16] asakomatsumoto leaves the room [03:32:41] asakomatsumoto leaves the room [09:22:57] EX2205_DIVE02 TEST MESSAGE [09:41:52] EX2205_DIVE02 ROV powered off [10:09:42] Good morning everyone. We are on station and on schedule for Dive 02 at Moytirra. [10:14:37] EX2205_DIVE02 ROV Launch [10:21:42] EX2205_DIVE02 ROV on Surface [10:22:25] EX2205_DIVE02 ROV Descending [10:23:23] LAT : 45.473999 , LON : -27.844764 , DEPTH : 18.1937 m, TEMP : 19.00734 C, SAL : 35.95138 PSU, DO : 5.40793 mg/l, TURBIDITY : 0.928 FTU [10:28:23] LAT : 45.474394 , LON : -27.844794 , DEPTH : 70.8837 m, TEMP : 15.45607 C, SAL : 35.8948 PSU, DO : 6.21781 mg/l, TURBIDITY : 1.044 FTU [10:33:24] LAT : 45.47468 , LON : -27.844779 , DEPTH : 221.8413 m, TEMP : 13.92416 C, SAL : 35.85125 PSU, DO : 6.06843 mg/l, TURBIDITY : 0.9951 FTU [10:38:25] LAT : 45.474973 , LON : -27.845045 , DEPTH : 373.5821 m, TEMP : 13.16162 C, SAL : 35.71873 PSU, DO : 6.26215 mg/l, TURBIDITY : 1.0073 FTU [10:43:25] LAT : 45.474974 , LON : -27.8455 , DEPTH : 523.8938 m, TEMP : 11.76376 C, SAL : 35.49786 PSU, DO : 6.24705 mg/l, TURBIDITY : 1.0134 FTU [10:44:37] We are diving on the edge of conditions today and so the ROV team is keeping a close eye on the winds. Currently we are seeing sustained winds between 14-16 kts. If those sustained winds get to 20 kts we will likely have to abort the dive given the depth we would have to recover from (that is, the time to get the vehicle back on deck is not trivial, so we'd need to be pre-emptive before the winds had time to make the sea state that much worse. Hopefully it won't come to that, but we wanted to let you know the parameters of the dive today. [10:48:25] LAT : 45.474886 , LON : -27.846105 , DEPTH : 684.2693 m, TEMP : 10.20059 C, SAL : 35.34887 PSU, DO : 5.7 mg/l, TURBIDITY : 1.0134 FTU [10:53:26] LAT : 45.474562 , LON : -27.846654 , DEPTH : 836.8186 m, TEMP : 8.23838 C, SAL : 35.1764 PSU, DO : 5.8464 mg/l, TURBIDITY : 1.0012 FTU [10:57:25] Good morning from the Azores [10:58:27] LAT : 45.47441 , LON : -27.847175 , DEPTH : 990.1567 m, TEMP : 7.21498 C, SAL : 35.2301 PSU, DO : 7.12723 mg/l, TURBIDITY : 1.0012 FTU [11:03:28] LAT : 45.474367 , LON : -27.847793 , DEPTH : 1149.5626 m, TEMP : 5.93629 C, SAL : 35.12973 PSU, DO : 9.24287 mg/l, TURBIDITY : 0.9951 FTU [11:04:03] scottfrance leaves the room [11:05:48] Good morning Daphne. [11:08:29] LAT : 45.474323 , LON : -27.848487 , DEPTH : 1303.8631 m, TEMP : 5.10529 C, SAL : 35.06202 PSU, DO : 10.64689 mg/l, TURBIDITY : 0.9829 FTU [11:13:30] LAT : 45.474244 , LON : -27.849128 , DEPTH : 1459.9029 m, TEMP : 4.53365 C, SAL : 34.99685 PSU, DO : 11.02018 mg/l, TURBIDITY : 0.9951 FTU [11:18:06] carlosdominguezcarrio leaves the room [11:18:31] LAT : 45.474139 , LON : -27.849767 , DEPTH : 1615.4646 m, TEMP : 4.18268 C, SAL : 34.96547 PSU, DO : 12.32545 mg/l, TURBIDITY : 0.9768 FTU [11:23:31] LAT : 45.473932 , LON : -27.85038 , DEPTH : 1776.4928 m, TEMP : 3.97914 C, SAL : 34.94906 PSU, DO : 13.93462 mg/l, TURBIDITY : 0.9646 FTU [11:28:32] LAT : 45.474153 , LON : -27.850812 , DEPTH : 1933.497 m, TEMP : 3.81504 C, SAL : 34.93903 PSU, DO : 15.42749 mg/l, TURBIDITY : 0.9585 FTU [11:29:55] arvindshantharam leaves the room [11:33:32] LAT : 45.474198 , LON : -27.850961 , DEPTH : 2088.7283 m, TEMP : 3.70377 C, SAL : 34.93479 PSU, DO : 16.55047 mg/l, TURBIDITY : 0.9585 FTU [11:38:33] LAT : 45.474256 , LON : -27.850987 , DEPTH : 2238.5367 m, TEMP : 3.59475 C, SAL : 34.93084 PSU, DO : 17.57975 mg/l, TURBIDITY : 0.9585 FTU [11:40:09] morning! [11:40:17] carlosdominguezcarrio leaves the room [11:42:25] Hi Deb! Glad you are with us today. Right up your alley! [11:42:57] are any of the folks who found Moytirra joining us? [11:43:26] We began our descent a little earlier than expected and so will reach bottom a little sooner. For that reason we will begin the pre-dive briefing at 0955 (just over 15 minutes from now) [11:43:34] LAT : 45.474238 , LON : -27.85158 , DEPTH : 2392.2593 m, TEMP : 3.52465 C, SAL : 34.93024 PSU, DO : 18.63852 mg/l, TURBIDITY : 0.9768 FTU [11:43:56] ashtonflinders leaves the room [11:48:35] LAT : 45.474192 , LON : -27.851364 , DEPTH : 2539.8004 m, TEMP : 3.50064 C, SAL : 34.92975 PSU, DO : 19.45263 mg/l, TURBIDITY : 0.9463 FTU [11:53:35] LAT : 45.474255 , LON : -27.851179 , DEPTH : 2698.7543 m, TEMP : 3.47409 C, SAL : 34.9298 PSU, DO : 20.93476 mg/l, TURBIDITY : 0.9341 FTU [11:54:54] asakomatsumoto leaves the room [11:55:46] iscwatch leaves the room [11:58:35] LAT : 45.473911 , LON : -27.850915 , DEPTH : 2847.8162 m, TEMP : 3.476 C, SAL : 34.92918 PSU, DO : 21.82206 mg/l, TURBIDITY : 0.9646 FTU [12:02:09] cindyvandover leaves the room [12:03:36] LAT : 45.473982 , LON : -27.850914 , DEPTH : 3009.3726 m, TEMP : 3.48644 C, SAL : 34.92921 PSU, DO : 22.72428 mg/l, TURBIDITY : 0.9585 FTU [12:04:26] good morning [12:04:35] emilycrum leaves the room [12:04:56] deidricdavis leaves the room [12:05:30] ellenkenchington leaves the room [12:06:51] ellenkenchington leaves the room: Replaced by new connection [12:08:18] Morning everyone! [12:08:36] LAT : 45.473444 , LON : -27.84992 , DEPTH : 3020.5457 m, TEMP : 3.48706 C, SAL : 34.92969 PSU, DO : 22.96764 mg/l, TURBIDITY : 0.9341 FTU [12:08:50] Hi Deidric. Good to see you in the chat room. Hope you are enjoying your internship. [12:09:04] We are about 30 m above bottom. [12:09:53] OOH! [12:09:57] We made it! [12:10:48] deidricdavis leaves the room: Replaced by new connection [12:12:00] Snub-nose spiny eel? [12:12:04] Stand by for zoom requests etc until pilots are set with vehicles. [12:12:11] cindyvandover leaves the room [12:12:57] Mike: what family is gthat? [12:13:37] LAT : 45.473374 , LON : -27.849828 , DEPTH : 3037.8401 m, TEMP : 3.53967 C, SAL : 34.93202 PSU, DO : 23.28076 mg/l, TURBIDITY : 0.9585 FTU [12:13:43] Notocanthidae again with a ? [12:14:11] That looks like Bathykorus narcomedusa that floated by. [12:14:13] would need a zoom when available if the fish hangs around. [12:14:51] Looks like two different eels [12:14:57] no guess yet on the 2nd fish [12:15:01] EX2205_DIVE02 ROV on Bottom [12:16:37] deidricdavis leaves the room [12:16:39] Hello all! [12:16:46] Hello Asako! [12:16:48] fish 2 may be a cutthroat eel Synaphobranchidae [12:17:03] Hi Tara! [12:17:24] PS all of my fish IDs are medium to low confidence. [12:18:26] ellenkenchington leaves the room [12:18:37] LAT : 45.473497 , LON : -27.849552 , DEPTH : 3032.5829 m, TEMP : 3.58733 C, SAL : 34.93001 PSU, DO : 22.59424 mg/l, TURBIDITY : 0.9524 FTU [12:18:52] @Mike: understood, but they do help me narrow the possibilities down. [12:19:03] deidricdavis leaves the room [12:20:36] Hi everyone! Just sitting behind the microscope identifying sponges while I follow the dive (I couldn't miss it). Wish me "focus" :-D [12:21:50] Hi Joana! [12:22:03] deidricdavis leaves the room [12:22:15] I was just entering it officially in the record. [12:22:19] Little comb jelly went by. Maybe Beroe but we barely saw it. [12:22:24] @Scott and Mike: for what it is worth, I think one of the 2 is a synaphobranchid as well [12:22:29] pteropod shells [12:22:32] pteropoda shells [12:22:33] Pteropod shells [12:23:30] carlosdominguezcarrio leaves the room [12:23:35] deidricdavis leaves the room [12:23:38] LAT : 45.473557 , LON : -27.849757 , DEPTH : 3037.2026 m, TEMP : 3.57389 C, SAL : 34.92925 PSU, DO : 23.08927 mg/l, TURBIDITY : 0.9463 FTU [12:24:48] Perhaps not a good sign that I could not recall the name of pteropods! [12:25:18] getting tired (or old)? [12:25:23] The red sediment is often indicative of the presence of sulfides nearby, oh Ashton just said it. [12:25:25] No worries Scott. I have plenty of confidence that it'll click in. [12:25:28] Both! [12:25:54] lots of sympathy here! [12:26:34] deborahglickson leaves the room [12:27:56] carlosdominguezcarrio leaves the room [12:28:29] Hi all [12:28:39] LAT : 45.473872 , LON : -27.849894 , DEPTH : 3036.5358 m, TEMP : 3.51516 C, SAL : 34.93154 PSU, DO : 23.49161 mg/l, TURBIDITY : 0.9524 FTU [12:29:34] HI Patrick. Good to see you got into the chatroom. [12:29:48] Hi Patrick! [12:30:09] Caprellid amphipods? [12:30:18] sulfide [12:31:37] rattail [12:31:50] would be good to study a piece or two of larger sulfide talus with good zoom [12:33:32] this is a nice comparison between the piece of basalt talus and sulfide. [12:33:39] LAT : 45.47363 , LON : -27.849626 , DEPTH : 3038.718 m, TEMP : 3.49371 C, SAL : 34.92958 PSU, DO : 23.60033 mg/l, TURBIDITY : 1.1905 FTU [12:34:26] is that a carnivorous sponge? [12:34:28] Sponge tucked in rock? [12:34:33] looked a bit like an urchin [12:34:35] no way to know what those worms are without a collection? they are pretty dense...and I don't usually think of these at active vents [12:34:42] eg urchin sponge [12:34:43] The little round thing with the rays coming out of it on that rock [12:34:50] I think that was a carnivorous sponge [12:34:56] *occurring at active vents, or sampled from... [12:35:53] patrick - do you know those worms from Moytirra active? [12:36:44] you probably won't know how indurated these rocks are until you try. [12:36:47] looks like there might be other hairy rocks [12:38:40] LAT : 45.473661 , LON : -27.850498 , DEPTH : 3038.5775 m, TEMP : 3.49656 C, SAL : 34.92812 PSU, DO : 24.75603 mg/l, TURBIDITY : 0.9585 FTU [12:39:34] and maybe spend a little bit more zoom time on a hairy rock, if the worms are dense? Tosee if we see any heads.... [12:39:58] elisabettamenini leaves the room [12:40:18] this is a lot of sulfide talus! [12:40:28] allencollins leaves the room [12:41:10] we might not see other small inverts on sulfide talus without zoom [12:41:18] pyrite or chalcopyrite? [12:41:25] Collect it. Pay for the cruise. ;-) [12:41:34] it looks like it [12:41:38] Unless you're a fool! [12:41:47] Fools gold! So lovely [12:42:30] that's too bad, because that would be a great sample. [12:42:57] Where this came from, there's likely to be more! [12:43:21] Do we know/think these caprellids may be the same as yesterday? It's much deeper here. [12:43:38] I would be surprised if they are the same caprellids. [12:43:42] LAT : 45.473523 , LON : -27.849507 , DEPTH : 3035.4443 m, TEMP : 3.48974 C, SAL : 34.93054 PSU, DO : 24.20366 mg/l, TURBIDITY : 0.9402 FTU [12:43:51] carlosdominguezcarrio leaves the room [12:43:54] BTW, we did get caprellids as associates on some of the samples. [12:44:01] I also don't know of caprellids like that at active vents [12:44:09] I preserved and logged them as separate samples. [12:44:17] Deb, if you see anything you want to sample let me know. I was planning on waiting for some in situ pieces of the inactive vents, but we have room for rubble too [12:45:08] cool amphipod sticks! [12:45:23] deidricdavis leaves the room [12:45:59] Funny. Caprellids and the amphipod worm sticks. Both reaching up above the bottom and bending around [12:46:02] you won't really be able to sample an in situ extinct vent - will still need to pick up talus probably. [12:46:08] again, depends on how "hard" they are [12:46:12] epidote? [12:46:37] the green could be copper? or one of the other metals? [12:47:00] This is a fauna that I don't know at all... [12:47:55] gret zoom target rock [12:47:59] i am loving this. [12:48:11] *great [12:48:19] i would have said the white was some weird biology. [12:48:29] allencollins leaves the room [12:48:41] Oh what the heck! Stalactites! [12:48:43] LAT : 45.473649 , LON : -27.849583 , DEPTH : 3034.6944 m, TEMP : 3.49226 C, SAL : 34.93113 PSU, DO : 23.52271 mg/l, TURBIDITY : 0.9463 FTU [12:49:22] elisabettamenini leaves the room [12:49:25] micro-chimney? [12:49:31] we don't look at the inactive stuff usually. [12:49:34] I don't see any shimmering water [12:49:50] couldn't it be serpentinization [12:50:09] What do you call a copper rusticle? [12:50:42] @Scott Tina is asking caprellida collection [12:51:21] i don't think its serpentinization because this is a sulfide. but that's totallya guess. [12:51:32] We are looking for a small rock we can collect with caprellids and mud sticks [12:51:48] I think they are too small to suction. [12:52:15] could you collect the rusticle? [12:52:25] Doesn't sulfur have a relatively low melting point? If elemental sulfur got hot enough, it would become plastic like this. Maybe that got covered in the copper sulfide? [12:52:56] maybe slurp the corusticle? [12:53:17] i like cindy's idea [12:53:26] ellenkenchington leaves the room [12:53:41] LAT : 45.473603 , LON : -27.849426 , DEPTH : 3034.746 m, TEMP : 3.48941 C, SAL : 34.93029 PSU, DO : 23.942 mg/l, TURBIDITY : 0.9707 FTU [12:54:06] Cindy: do you mean slurp to get the rock, or slurp to get the biology on it? [12:54:31] Or remove sediment to see what it looks like beneath? [12:54:33] slrup to get the rusticle - I guess I am imagining it to be friable, but [12:54:37] Tina agree with that fauna of inactive sulfides are mostly unknown [12:55:07] We are checking to see how we can sample it. [12:55:26] elisabettamenini leaves the room [12:55:26] so one of my geochemist colleagues suggests that it might be malachite, as a weathering/oxidation product. copper carbonate hydroxide. [12:55:28] allencollins leaves the room [12:57:05] it moves. [12:57:20] sediment was soft underneath it [12:57:25] 235F for sulfur [12:57:34] this is already the best dive! [12:57:42] haha [12:57:47] elisabettamenini leaves the room [12:57:57] I'd guess, Nolan, that this is formed in place just from the morphology. but who knows! [12:58:03] @Deb I have missed your enthusiasm! [12:58:28] my stunning use of too many exclamation points!! !! [12:58:31] @Cindy Hello Cindy, Tina Molodtsova says hello to you! [12:58:42] LAT : 45.47367 , LON : -27.849351 , DEPTH : 3035.2599 m, TEMP : 3.49114 C, SAL : 34.9331 PSU, DO : 23.62573 mg/l, TURBIDITY : 0.9646 FTU [12:59:49] christarabenold leaves the room [12:59:54] Having trouble keeping the connection so will just watch the live stream. So cool! [13:00:07] Looks like a hollow base [13:00:10] Hi Tina! Glad you are on board. Thanks Asako. Tina - I'm glad you think collecting a caprellid is a good idea too and hope you will study it! [13:00:12] my geochemist friend just sent me a word doc called Superegence Ore and Gangue Characteristics - dare I open it? [13:00:15] I like Cindy's word -- corusticle [13:00:43] If you are getting kicked out of the chat a lot, switch to using the firefox browswer, tends to work better [13:01:00] "Superegence Ore" thats a new one for me! [13:01:49] @ashton that's because I can't spell - Supergene [13:02:32] do the geologists need a piece of the 'mother sulfide' too to understand how the piece formed? I know the one before us is a big rock, but maybe one that looks similar with bits of the blue-green deposit? [13:02:35] definitely open it, Deb! [13:03:26] Maybe it should be Curusticle as the symbol for copper is Cu. Of course, that assumes it is copper. [13:03:40] ellenkenchington leaves the room [13:03:42] LAT : 45.473723 , LON : -27.84934 , DEPTH : 3034.1908 m, TEMP : 3.49511 C, SAL : 34.93293 PSU, DO : 23.75829 mg/l, TURBIDITY : 0.9829 FTU [13:04:02] christarabenold leaves the room [13:04:18] @Cindy sent your message to Tina. Thank you! [13:04:29] deidricdavis leaves the room [13:04:40] not slurpable? [13:04:45] I have to be on campus in 52 minutes, and I'm afraid to leave for the 20 minutes it will take to get there this is so exciting...and I'm not even a geologist. [13:04:47] no wayt o slurp? [13:04:58] We'll have to keep looking. They are worried about it blocking the hose. [13:05:04] ROV is pretty sure it would get stuck in the slurper [13:05:11] understood [13:05:22] I would be very sad if that was just some piece of bio covered in cool geology. [13:06:27] I would be excited for the biology though. Biological blue greens like that are pretty rare and have neat chemistry. [13:07:23] is that a pillow fragment to right of screen? [13:07:37] yay! [13:07:55] allencollins leaves the room [13:07:55] Was that a glass sponge on the distance? [13:08:24] this is really typical - iron oxidation [13:08:27] would be great to zoom and collect some of your 'regular' amphipods and sticks on the rock below after the bio/rock colleciton [13:08:43] LAT : 45.473782 , LON : -27.849139 , DEPTH : 3031.2723 m, TEMP : 3.49097 C, SAL : 34.93004 PSU, DO : 24.41504 mg/l, TURBIDITY : 0.9707 FTU [13:09:39] @Tara, I was just thinking that this dive is wreaking havoc with my day job today! [13:10:41] @deb indeed! [13:11:33] After you collected the rock, could you zoom in on the same spot? on the rock on the left there is a tiny round thing, is it a gastropod or just a white particle? [13:11:45] expert ellicitation, part of the job ;) [13:11:55] nice rock! [13:11:58] I'm grateful that I can sit and work on my poster on one screen while watching this on the other! [13:12:11] deidricdavis leaves the room [13:12:39] Joana: what direction was the sponge? I saw some white precipitate on rocks but not sponge. [13:13:00] Top right from where we were looking at the rock [13:13:00] taraluke leaves the room [13:13:13] my money is on sulfide, but who knows. [13:13:16] but at a rather large distance [13:13:30] @Scott It looked like a wide vase. [13:13:40] i just packed the rock hammer! [13:13:42] exactly! [13:13:45] LAT : 45.473872 , LON : -27.849207 , DEPTH : 3032.3566 m, TEMP : 3.48974 C, SAL : 34.93334 PSU, DO : 24.23116 mg/l, TURBIDITY : 0.9646 FTU [13:13:47] looks like 20+ caprellids on that rock - that's impressive [13:13:50] @deb :-DDD [13:14:07] i do not think Kasey is going to let us break the rocks. [13:15:21] What?! But we can double our sampling capacity with one smack! [13:15:51] Abyssododecas? Pretty large caprellids! [13:15:55] Sample in the box. [13:15:57] Thomas, if you'll let me...I'm game. [13:16:11] Great pull ROV team, thank you! [13:16:17] On the Musicians Seamounts cruise John Smith broke one of the rocks to see the thickness of the Mn crust. Made some neat pics! [13:16:20] Ill be making a recommendation for an onboard rock saw for next season - it would really help first order descriptions particularly for how altered samples are [13:17:39] ashleymarranzino leaves the room: Replaced by new connection [13:18:07] anhydrite? [13:18:25] caprellids everywhere! [13:18:29] This wasn't what I thought was a sponge. But we can lift off and see. [13:18:33] I'm not really sure either though. I will bug the geochemists again. [13:18:40] allencollins leaves the room [13:18:44] LAT : 45.473982 , LON : -27.849315 , DEPTH : 3029.5269 m, TEMP : 3.49656 C, SAL : 34.93598 PSU, DO : 24.1655 mg/l, TURBIDITY : 0.989 FTU [13:18:46] elisabettamenini leaves the room [13:18:54] That white rock to the right looked like a vase. [13:19:25] that's what I thought was a sponge (centre/right OF THE SCREEN) [13:19:39] (apologies fro the caps...) [13:20:06] Thanks. From a distance it looked like a Rossellidae vase. [13:20:18] it is not... it really looked like from a distance [13:20:53] Must be lots of particles suspended here at least from time to time to support that caprellid population [13:21:11] barite is another white mineral we sometimes see in sulfides, but I don't know (at all!) whether either anhydrite or barite would be weathering products. [13:21:25] maybe the caprellids are feeding on chemoautotophic microbes on the surface of the rock? A specimen for stable isotope analysis would be good (i.e., air dried) to see if for whatever reason there might be a chemoautotrophic carbon or sulfur signal. [13:21:46] I can air dry a couple of specimens. [13:21:50] usually filter feeders [13:22:07] this was probably a long lived field with this much sulfide talus around. and by long-lived, I have no idea how long. [13:22:10] These seem to be the capture particle type I think.. [13:22:39] might catch eggs though or flocs of bacteria [13:22:40] thomasmorrow leaves the room [13:22:54] doesn't have to be water flow - there are microbes that use sulfide minerals [13:23:44] LAT : 45.473171 , LON : -27.848979 , DEPTH : 3029.5944 m, TEMP : 3.50527 C, SAL : 34.93149 PSU, DO : 24.4361 mg/l, TURBIDITY : 0.9585 FTU [13:24:11] that is a rust stained pillow [13:24:16] i think [13:25:07] joanaxavier leaves the room [13:25:25] peltospirids are known from the active vents...but there could well be limpets of some sort, these or others, here. This dive already affirms that there is considerable biology on inactive sulfides about which we know nothing [13:25:51] allencollins leaves the room [13:26:44] cusk eel? [13:26:47] Elpidiidae sea cucumber [13:27:18] from our former discussion - my colleague Brian Kristall, who also worked on JdF vents, said anhydrite is moderate to high temperature and would dissolve if it sat in cold seawater. So he does not think that is anhydrite. [13:27:24] Would still be interested in collecting 'pod sticks, unless you know what they are... [13:28:17] elisabettamenini leaves the room [13:28:45] LAT : 45.473582 , LON : -27.849208 , DEPTH : 3025.0501 m, TEMP : 3.49198 C, SAL : 34.93106 PSU, DO : 24.28666 mg/l, TURBIDITY : 0.9585 FTU [13:29:08] Lots of Clio shells. [13:29:11] Clio shells [13:29:11] nolanbarrett leaves the room [13:29:15] see above - not anhydrite...likely. [13:29:35] joanaxavier leaves the room: Replaced by new connection [13:31:11] gordonrees leaves the room [13:31:20] Thanks Deb! [13:31:25] yeah, in the Moytirra paper the anhydrite is at active vent sites. [13:31:30] allencollins leaves the room [13:32:48] deidricdavis leaves the room [13:33:29] Brian said it could be barite - could be remobilized during weathering. there are cold seeps that have precipitated barite at the sea floor. [13:33:45] LAT : 45.473458 , LON : -27.848817 , DEPTH : 3023.1558 m, TEMP : 3.52247 C, SAL : 34.92559 PSU, DO : 24.47459 mg/l, TURBIDITY : 0.9585 FTU [13:36:13] allencollins leaves the room [13:36:45] anoher notacanthid [13:37:28] snub nosed, smiley faced, spiny eel. we saw one yesterday (not small). [13:38:02] Just running misc common names together [13:38:46] LAT : 45.473462 , LON : -27.849137 , DEPTH : 3019.3234 m, TEMP : 3.50019 C, SAL : 34.92966 PSU, DO : 23.9024 mg/l, TURBIDITY : 0.9646 FTU [13:38:47] @Scott, can you share Ken's notes on fish by email? [13:39:17] Sure. [13:39:24] :) [13:41:03] so as we move upslope, it looks like we might be seeing more basalt mixed in with the sulfides, just based on the morphology. [13:42:18] i wonder if the reason we see such big pieces of chalcopyrite/pyrite is that they are more resistant to weathering. [13:43:18] fish upslope is a cusk eel [13:43:18] deidricdavis leaves the room [13:43:42] right next to the cusk eel is a nice piece of basalt. :) [13:43:47] LAT : 45.473661 , LON : -27.848793 , DEPTH : 3014.292 m, TEMP : 3.48823 C, SAL : 34.93017 PSU, DO : 24.52457 mg/l, TURBIDITY : 0.9707 FTU [13:45:07] we did see a notacanthid a few minute ago. very white-looking in the lights, holding very straight with slight downward bend to the back, with sight wiggling of the tail. [13:46:19] Yes, that was the one we were slowly approaching that darted off. [13:46:31] correct [13:46:45] I'm off to lunch. [13:48:06] elisabettamenini leaves the room [13:48:48] LAT : 45.473538 , LON : -27.848625 , DEPTH : 3016.121 m, TEMP : 3.48874 C, SAL : 34.9299 PSU, DO : 24.76046 mg/l, TURBIDITY : 1.1905 FTU [13:48:59] That looks perfect [13:49:27] ashleymarranzino leaves the room [13:49:38] what the heck is that? [13:49:56] did it look brecciated? I look down for one minute. [13:51:52] yup, looka like a strange conglomerate. Im going to grab one more - want something more indicative of the white preciptant [13:52:21] scottfrance leaves the room [13:52:58] Polychaete swimming in the rock box [13:53:48] LAT : 45.473385 , LON : -27.848919 , DEPTH : 3015.9069 m, TEMP : 3.49762 C, SAL : 34.93309 PSU, DO : 24.98605 mg/l, TURBIDITY : 0.9646 FTU [13:55:18] @taraluke I saw that! I was wondering what it was! Thanks [13:57:57] Would still be interested in collecting 'pod sticks if we see any, unless someone knows for sure what they are... [13:58:49] LAT : 45.473528 , LON : -27.848904 , DEPTH : 3014.5892 m, TEMP : 3.50147 C, SAL : 34.92686 PSU, DO : 24.68926 mg/l, TURBIDITY : 0.9829 FTU [13:59:31] so I have to say, this is the kind of rock that we would have stayed far away from when exploring active vents - we rarely wanted anything that weathered. :) But this is going to be helpful when thinking about the resource assessment side of sulfides (but say that in the appropriate, OE-approved way). [14:00:00] marydeere leaves the room [14:01:03] dhugallindsay leaves the room [14:01:49] Ashton, aren't you loving this? This is such an awesome dive. So little bio to get in the way. ;) [14:02:13] there's bio there, we just aren't looking close enough!!! [14:02:32] so true, Cindy. And you know I'm kidding. I do love a nice fish. [14:02:54] fun to see the bio-geo rivalry heat up. :) [14:03:19] 'pod stick rock [14:03:21] cusk eel [14:03:44] rock on the left [14:03:45] taraluke leaves the room [14:03:49] LAT : 45.473578 , LON : -27.848706 , DEPTH : 3010.8632 m, TEMP : 3.48689 C, SAL : 34.92998 PSU, DO : 24.48213 mg/l, TURBIDITY : 0.9707 FTU [14:04:27] slurp [14:04:31] ? [14:04:48] plus some good zoom first [14:05:24] wonder why on just some rocks [14:06:15] i was thinkinf forams for the others too, but one with an amphipod on it. Totally not my expertise. [14:06:28] small sponges as well? [14:06:31] I didn't realize that arboriscent foram would bend so easily in the current. [14:06:41] elisabettamenini leaves the room [14:08:50] deidricdavis leaves the room [14:08:50] LAT : 45.473514 , LON : -27.848496 , DEPTH : 3004.532 m, TEMP : 3.48913 C, SAL : 34.93 PSU, DO : 24.41572 mg/l, TURBIDITY : 0.9707 FTU [14:08:55] laser? [14:09:19] so this bright rust red sediment is what I normally think of as "hydrothermal sediment" [14:09:28] wow! [14:10:24] gorgeous bio [14:10:55] sample? [14:11:11] polyp! [14:11:16] scale worms are pretty good predators [14:11:44] how we can collect these octocorals!? [14:12:51] @Scott could we collect these octo?? [14:13:04] both Tina and I are interested in [14:13:51] LAT : 45.473444 , LON : -27.848569 , DEPTH : 3003.9498 m, TEMP : 3.48561 C, SAL : 34.9318 PSU, DO : 24.52966 mg/l, TURBIDITY : 0.9707 FTU [14:14:06] looks friable - worth a slurp try? [14:14:29] if possible... [14:16:53] taraluke leaves the room [14:17:03] Rusticles. This must be the Titanic. [14:17:16] could be micro-biology though [14:18:38] Seriously, though, the rusticles on the Titanic are supposedly caused by microbial action on iron/steel. [14:18:40] These are so weird. [14:18:51] LAT : 45.473399 , LON : -27.848765 , DEPTH : 3002.7055 m, TEMP : 3.52058 C, SAL : 34.9232 PSU, DO : 24.53244 mg/l, TURBIDITY : 0.9707 FTU [14:19:00] Mike, that would make sense here as well, then. High iron content in the rocks. [14:19:24] https://oceanexplorer.noaa.gov/explorations/03titanic/rusticles/rusticles.html [14:20:15] i think Mike it right! [14:20:17] I think there might be microbes invoved.... [14:20:25] check out this article from 2003. [14:21:45] On the phone with a geologist....he's having a look [14:22:02] I know even less about microbes than I do about real biology. [14:22:26] Tara, oh good. was hoping you'd have an opinion on this. [14:23:22] If rusticle formation is a normal occurrence in places like his, it would explain the process on shipwrecks. [14:23:29] franktamara leaves the room [14:23:46] i think it would be for microbio. [14:23:52] LAT : 45.473432 , LON : -27.848719 , DEPTH : 3003.2462 m, TEMP : 3.49935 C, SAL : 34.94294 PSU, DO : 24.82681 mg/l, TURBIDITY : 0.9585 FTU [14:23:57] @Scott QUESTION: do you have push cores? for meio? [14:24:08] No push cores on board [14:24:34] thanks. it was Tina asking [14:24:36] if there is still microbial activity, would this be something you'd want to freeze? (I know nothing about this, bio people please weigh in) [14:25:36] freezing does sounds like a good idea [14:26:02] Sorry, never sampled microbio with a slurp gun [14:26:39] patrickcollins leaves the room [14:26:40] no deep freezer -80 on board I think. (we asked it at ealier dive [14:27:12] there is a small rock with sticking out on the bottom right [14:27:33] I think there has been a fair amount of study of Fe-oxidizing bacteria from inactive sulfides - but I can't say what a microbiologist would be interested in from here, nor how to preserve it. [14:28:53] LAT : 45.473554 , LON : -27.848505 , DEPTH : 3000.8582 m, TEMP : 3.48834 C, SAL : 34.92752 PSU, DO : 24.66696 mg/l, TURBIDITY : 0.9646 FTU [14:29:12] Correct - we have no ability to freeze samples [14:29:30] https://www.frontiersin.org/articles/10.3389/fmars.2019.00461/full review of the biology of inactive sulfides with summary of what was known about microbes in 2019 [14:29:35] For those just joining the chat for the first time, please know using chrome might kick you out frequently. Using firefox tends to work better [14:30:01] I think that any rocks covered with hydroids and/or caprellids must be extremely interesting from a geological and microbial point of view so needs sampling ;-) and we all know that rocks preserve best in ethanol ;-) [14:30:44] rocks or geologists? ;) [14:30:49] I spend significant time picking over any rocks that come up so that biology gets preserved intact (or as much as possible) [14:31:37] A geologist here at Stockton was extremely interested when3of iron oxides I just showed him the feed. He doesn't m one for sure, but also suggested possible microbial precipitation [14:31:42] after slurping, small rock on the bottom right sticking out with 'pod sticks - worth a try? [14:31:44] Oops [14:31:57] Very commendable and greatly appreciated. I would tell you I search my jellies for rocks also but you know I would be lying ;-) [14:32:25] Cindy: are you saying that perhaps we shouldn't have made the effort to sample this? [14:32:54] taraluke▸A geologist here at Stockton was extremely interested when I just showed him the feed. He doesn't know for sure, but also suggested possible microbial precipitation of iron oxides on fluids. [14:33:03] @Dhugal -- but you do search your jellies for amphipods. :) [14:33:15] Will check it out Elisabetta. Might be a buried larger rock. [14:33:51] @Scott - not at all....I'm not a microbiologist or geologist, so I don't know what is useful [14:33:54] LAT : 45.47362 , LON : -27.848452 , DEPTH : 3003.7228 m, TEMP : 3.48913 C, SAL : 34.92786 PSU, DO : 25.00106 mg/l, TURBIDITY : 0.9585 FTU [14:34:10] ha ha! For sure! And cestodes and whatever else. It is all good substrate and there are bethic communities in the midwater as you well know [14:34:11] Whew. [14:34:43] Freezing it or treating it like you might any eDNA sample would work for this as well from a microbiology point of view [14:34:58] I'll see what we can do. [14:35:07] I use pidgin for the chat room. never kicked out except the ship lost connection [14:35:52] Bet you are aching for a gorgonian @Asako [14:35:56] I return to a neat collection. For microbiological storage, ethanol might be your best bet given the constraints on board. You won't be able to revive any of them, but its almost better to maintain the genetic information for sequencing. [14:35:56] allencollins leaves the room [14:36:54] dhugallindsay leaves the room [14:37:13] Agreed, @nolan [14:37:30] @Dhugal: we saw some stolonifers on the rock face! [14:37:56] @Dhugal we saw octocoral polyps alrady!! [14:38:25] we did same comment, Scott;-) [14:38:54] LAT : 45.473477 , LON : -27.848273 , DEPTH : 3000.7289 m, TEMP : 3.48751 C, SAL : 34.93019 PSU, DO : 24.30865 mg/l, TURBIDITY : 0.9585 FTU [14:38:55] samcuellar leaves the room [14:40:14] taraluke leaves the room [14:40:17] ashleymarranzino leaves the room [14:41:02] there is a smaller one under those 2 on the right [14:42:17] check out lower right, just out of view now [14:42:19] lower right [14:43:12] christophermah leaves the room: Replaced by new connection [14:43:54] LAT : 45.473571 , LON : -27.848448 , DEPTH : 3002.3572 m, TEMP : 3.48672 C, SAL : 34.93096 PSU, DO : 25.21193 mg/l, TURBIDITY : 0.9585 FTU [14:44:21] Good eye Elisabetta! Looks like a good sample opportunity. [14:44:32] Yey! [14:44:50] can someone remind me how much sampling ability/capacity we have now? [14:45:33] wow... [14:45:37] did not expect that! [14:45:44] slurp? [14:45:48] the white rock with coral just above looks more solid? [14:46:13] (left of the grey divot) [14:46:23] that's not that surprising. some of the sulfides are quite friable. [14:47:53] wILL TRY SUCTIONING THE BROKEN SAMPLE AND THE FUZZ. [14:48:10] scoop? [14:48:17] Sorry about caps lock. I use them for the collection software database that is also open on this laptop. [14:48:22] @deb, for geology we have the open (no lid) starboard side rock box completely empty, and still room in the port side lidded rock box (with those two talus samples). My plan for remaining collection is (a) inactive vent in situ, (b) possibe active vent, (c) hopefully pillow from base of enscarpement. I dont recall the Moytirra paper saying they saw any ultramafics from the fault [14:48:48] SCOOP [14:48:50] I think suction can get more than the scoop, which takes quite long to deploy and use. [14:48:54] @deb, but of course, if you see something interesting, shout! [14:48:56] LAT : 45.473524 , LON : -27.848423 , DEPTH : 3001.9779 m, TEMP : 3.49605 C, SAL : 34.93202 PSU, DO : 25.52316 mg/l, TURBIDITY : 1.0073 FTU [14:48:56] christophermah leaves the room [14:49:16] @Scott Tina suggest me scoop three times!! ) [14:49:24] juliehuber leaves the room [14:49:31] We have a blizzard of monitors and computers in front of us ad it is easy to lose track! [14:52:58] Thanks, @Ashton re sampling. [14:53:56] LAT : 45.473626 , LON : -27.848427 , DEPTH : 3003.1756 m, TEMP : 3.48879 C, SAL : 34.92921 PSU, DO : 25.69515 mg/l, TURBIDITY : 0.9646 FTU [14:56:56] You guys are doing an awesome job of keeping us entertained. way too bad about the slurp. [14:57:17] ashleymarranzino leaves the room [14:57:21] Waay too bad. [14:57:34] christophermah leaves the room [14:57:40] Guess I should have listened to Tina... [14:58:54] arvindshantharam leaves the room [14:58:57] LAT : 45.473517 , LON : -27.848315 , DEPTH : 3003.3119 m, TEMP : 3.49008 C, SAL : 34.92917 PSU, DO : 24.64957 mg/l, TURBIDITY : 0.9585 FTU [14:59:09] juliehuber leaves the room [14:59:48] @Scott Tina's fingeres crossed [14:59:54] mine as well [15:01:29] franktamara leaves the room [15:01:50] Put it on display at the Smithsonian. [15:02:22] that's fantastic @Allen [15:03:39] Thank you so much for the effort! I think we all got a little sad when the slurp broke...Thank you for all the amazing job you are doing! This is great in any case! [15:03:57] LAT : 45.473598 , LON : -27.848358 , DEPTH : 3001.2726 m, TEMP : 3.48393 C, SAL : 34.92943 PSU, DO : 25.24081 mg/l, TURBIDITY : 0.9524 FTU [15:04:11] Yup. As I've said a few times now, no one ever said working in the deep sea is easy. [15:04:33] Tina says three things already happened. now everything will be OK. [15:04:45] white dots are pteropods? [15:05:00] (on the hydrothermal deposit) [15:05:34] colorful rocks [15:06:13] christophermah leaves the room [15:06:49] back to our attempted collection: this is from my colleague at Stockton, Rocky Severs: you can tell them the reason why it is so crumbly is because it is clearly a sulfide based mound. I can clearly see what appears to be pyrite “sparkles” and probably massive hematite/magnetite being the dominant gray. [15:06:56] I was looking at some isolated white bits on sediment - already gone by, but bet it was pteropod [15:07:15] too late for discussion, but I wanted to add it here incase it is helpful. [15:07:19] In case you did not hear it on audio, we have no scoop on the vehicle today. [15:07:49] Certainly lots of pteropod shells down here. [15:08:58] LAT : 45.473499 , LON : -27.848506 , DEPTH : 2995.9835 m, TEMP : 3.48326 C, SAL : 34.93035 PSU, DO : 24.79501 mg/l, TURBIDITY : 0.9463 FTU [15:10:04] looks like we are moving through a couple of different aras - some small chutes of talus debris, some areas that look more like undisturbed sediments. [15:10:22] Can we zoom on that medusa? [15:11:04] Crossota maybe [15:11:14]