Atlantis Cruise 3-31

Southern EPR 17°-19°S:
The STOWA Expedition

Sample # Deg.
S. Lat
Deg.
W. Long
Depth (m) Sample Description Geologic context
Dive 3343
3343-1 18 36.38 113 23.71 2689 Pillow bud 11 cm long Animal farm flow (?)
3343-2 18 36.43 113 24.00 Biology sample
3343-3 18 36.43 113 24.00 2675 "animal farm" sheet flow" Sheet flow from animal farm
3343-4 18 36.82 113 24.08 2671 Rind of lobate crust Lobate lava flow west of axis
3343-5 18 37.17 113 24.04 2672 Single blade-shaped glassy fold Near-axis sheet flow
3343-6 18 37.63 113 24.59 2676 Smooth bud from pillow Pillow bud
3343-7 18 37.69 113 24.34 2677 Tabular piece of folded sheet flow Axial fissure
3343-8 18 38.40 113 24.39 2672 Large lobate crust ~44x30x8 cm Bathymetric high
3343-9 18 38.75 113 24.48 2679 Small sheet flow sample. lava channel near fissure
3343-10 18 38.88 113 24.54 2679 Lobate crust fragment, 12x8.5x9 cm ~1 km north of waypoint 6
Dive 3344
3344-1 18 34.81 113 23.90 2788 13 cm long pillow bud West side of axis.
3344-2 18 34.81 113 23.90 2788 19 x11 cm gently curved pillow bud Partially sedimented pillow lava
3344-3 18 35.03 113 23.53 2792 Angular sheet flow fragment Pillow near waypoint 2
3344-4 18 35.13 113 23.69 2716 Curved pillow fragment Pillow near axis center
3344-5 18 35.27 113 23.79 2705 Pillow bud 8x6 cm
3344-6 18 35.38 113 23.75 2700 Upper crust of lobate flow Rubble in lobate flow
3344-7 18 35.53 113 23.74 2700 Folded sheet flow fragments Crust of lobate flow
3344-8 18 35.48 113 23.66 2702 3 pieces of altered pillow In mostly lobate flow
3344-9 18 35.96 113 23.73 2686 Piece of folded sheet flow 26x16 cm Near edge of lav channels
3344-10 18 35.99 113 23.82 2680 Sheet flow fragment Near collapse pit and lava channel
3344-11 18 36.26 113 23.77 2687 Thin (3-4 cm) glassy, ropy fragment. Lava channels near axis
3344-12 18 36.58 113 23.65 2700 Curved pillow fragment Near Animal Farm
Dive 3345
3345-1 18 37.40 113 24.26 2671 Glassy basalt from folded sheet flow Edge of collapse wall
3345-2 18 37.56 113 24.29 2680 Basalt with glassy surface Margin of first channel
3345-3 18 37.57 113 24.31 2675 Basalt/glass fold from sheet flow Chaotically folded sheet flow
3345-4 18 37.58 113 24.62 2689 glassy pillow bud piece, 7cm x 5 cm Area of staining
3345-5 18 37.60 113 24.67 2693 Jumbled sheet flow 9cm x 8 cm x 9 cm Near lobate margin
3345-6 18 37.59 113 24.99 2710 Folded rock from sheet flow Margin of jumbled channel
3345-7 18 37.61 113 25.20 2736 Shell of drained pillows Older lavas, maybe a kipuka
3345-8 18 37.63 113 25.25 2737 Very fresh tabular piece of jumbled flow Jumbled flow near contact
3345-9 18 37.45 113 25.12 2731 Lobate flow chunk with thin glass rind. Near jumbled contact
3345-10 18 37.64 113 25.12 2731 Piece of jumbled sheet flow Near contact
3345-11 18 37.78 113 24.55 2684 Jumbled sheet flow samples SE margin of sheet flow
Dive 3346
3346-1 18 41.98 113 25.32 2725 Aphyric basalt from 15 cm pillow bud
3346-2 18 42.07 113 25.19 2707 Large pillow bud, 13cm x 9 cm
3346-3 18 42.13 113 25.12 2701 Gently folded sheet flows Folded sheet flows
3346-4 18 42.27 113 24.90 2680 Basalt slab, lobate crust? 24 cm long Lobate crust?
3346-5 18 42.40 113 24.68 2679 folded sheet flow, 17 cm long Folded sheet in lobate field
3346-6 18 42.40 113 24.68 2677 Folded glassy sheet lava, 11 cm x 9 cm Near contact with lobate
3346-7 18 42.44 113 24.59 2688 Broken sheet lava, 14 cm x 9 cm Broken sheet lava
3346-8 18 42.52 113 24.60 2685 Folded sheet flow, with plag up to 5 mm Near lobate
3346-9 18 43.05 113 24.91 2683 Plag microphyric lobate lava Heavily sedimented lava
3346-10 18 43.17 113 24.68 2676 Lobate lava, < 1 % plag up to 2-3 mm High-aspect ratio lobate lava
3346-11 18 43.22 113 24.60 2678 Pillar top, 7 cm at top, 5.5 cm at base Pillar
3346-12 18 43.22 113 24.60 2679 Middle of pillar/ Interior glass altered Pillar
3346-13 18 43.22 113 24.60 2679 Top portion of lava pillar, 15 cm tall Pillar
3346-14 18 43.31 113 24.51 2677 Lobate crust, almost aphyric Lobate crust
3346-15 18 43.60 113 24.56 2671 Lobate slab, glassy, with spiny drips Lobate flow
3346-16 18 43.61 113 23.95 2730 Portion of lobate crust, 11 cm x 15 cm
3346-17 18 43.61 113 23.89 2739 Multiple fragments; rare plag ~ 1 mm
Dive 3347
3347-1 18 34.85 113 25.02 2664 pillow or lobate, 25 cm x 22 cm x 12 cm East wall of axis
3347-2 18 34.75 113 25.26 2643 Pillow 19 x 11 cm. broken on ends West wall of axial trough
3347-3 18 34.72 113 25.07 2661 Weathered portion of lobate flow In axial trough.
3347-4 18 34.37 113 25.13 2655 Glassy pillow bud ~10 m from W wall of trough
3347-5 18 34.30 113 25.22 2651 Lobate bud, 24 cm long, 9 cm diam ~30 m E of W trough wall
3347-6 18 34.18 113 25.13 2652 Jumbled flow piece, 20x10x12 cm Valley floor
3347-7 18 33.91 113 25.09 2055 Jumbled sheet flow in 2 pieces Valley floor, 40 m from E wall.
3347-8 18 33.68 113 25.07 2651 Sheet flow. Conical piece 13 cm long Floor of axial valley
3347-9 18 33.63 113 24.99 2610 Pillow 13x24x17 cm Top of east wall of axis
3347-10 18 33.50 113 25.17 2659 Jumbled sheet flow, highly contorted Base of W wall of graben
Dive 3348
3348-1 18 31.41 113 25.95 2598 pillow bud with glass up to 1.5 cm thick Locally elongated pillow flow
3348-2 18 31.48 113 24.83 2598 Pillow with glass 0.5-0.7 cm thick Top of hill (outside graben)
3348-3 18 31.67 113 24.8 2618 Cruddy piece with 2-4 mm glass rind Graben floor, just N of ctc
3348-4 18 31.78 113 24.72 2614 Sheet flow piece 15x23x14 cm Sheet flow just S of contact
3348-5 18 31.84 113 24.76 2611 Extensively folded glassy sheet flow ~ 20 m from graben wall
3348-6 18 32.42 113 24.87 2596 Small pillow bud fragment Pillow near center of graben
3348-7 18 32.71 113 24.93 2583 V. cracked pillow bud Pillow flow trans. to lobate
Dive 3349
3349-2 18 36.43 113 24.99 2675 Several small pieces, largest 16x9x9 cm Jumbled sheet flow
3349-9 18 36.66 113 23.96 Part of sheet flow 39x24x6 cm Lobate flow W side of trough
3349-10 18 37.08 113 24.15 2677 3 pcs. of sheet flow Sheet flow, bottom of trough
3349-11 18 37.17 113 24.17 2677.2 Folded sheet flow with glassy surfaces Sheet flow, bottom of trough
Dive 3350
3350-1 18 41.52 113 25.62 2729 Lobate 25 cm long, hackly glass margin Lobate crust close to pillows
3350-2 18 41.40 113 25.14 2693 Lobate crust with thin glassy rind Younger lava just E of ctc
3350-3 18 41.34 113 25.02 2698 Large glassy bud with ~ 1% ol + plag Bud from lobate flow
3350-4 18 41.28 113 24.84 2718 Jumbled sheet lava with ~ 1% olivine Collapse zone in lobates
3350-5 18 40.38 113 25.02 2678 Lobate crust with ~ 1% plagioclase Region of sheet/broken lobate
3350-6 18 40.38 113 24.84 2690 Lobate crust with < 1% plagioclase Collapsed lobate shell
3350-7 18 40.38 113 24.84 Biology sample
3350-8 18 40.32 113 24.66 2715 Stained lobate crust of oliv + plag lava Collapsed lobate area
3350-9 18 40.26 113 24.90 2638 Lobate crust with < 1% plagioclase Older lava near west fissures
3350-10 18 40.08 113 24.78 2686 Lobate crust with 1-3%, ol + plag Younger lava with biota
3350-11 18 40.08 113 24.66 2699 Fresh, glassy sheet with ~ 1 % ol + plag Very fresh sheet flow
Dive 3351
3351-1 18 08.29 113 20.53 2686 Glassy (pillow bud?) fragments Age 2.5-3 pillow lava
3351-2 18 08.44 113 20.59 2698 Extinct hydrothermal chimney deposit Age 2.5 flow
3351-3 18 08.44 113 20.59 2694 Hydrothermal sulfide deposit Active black smoker
3351-4 18 08.44 113 20.59 2696 Several fragments of extinct chimney Age 2.5 flow
3351-5 18 08.44 113 20.59 2699 2 pillow fragments. Essentially aphyric From lava flow with vents
3351-6 18 08.67 113 20.59 2686 Lobate fragment with two glass layers Lobate crust
3351-7 18 08.86 113 20.52 2712 Lobate crust fragment Lobate crust
3351-8 18 09.21 113 20.60 2701 Pillow bud with glassy layer Age 2.5 - 3.0 pillows
3351-9 18 09.21 113 20.50 2686 Fragments of pillow with glassy rind Top of first step in wall
3351-10 18 09.63 113 20.57 2701 Very plag-phyric (12-15 vol %) lobate
3351-11 18 09.67 113 20.62 2700 Pillow or lobate fragment with ~1% plag
3351-12 18 09.88 113 20.71 2685 Plag-phyric (25-30 vol %) glassy crust
3351-13 18 09.93 113 20.72 2691 plag-rich (25-30 % lobate crust
Dive 3352
3352-1 18 10.81 113 21.60 2677 Small bud fragments with 2-5 mm plag Pillow west of axis
3352-2 18 10.69 113 21 2679 Flat crust with ~ 15% plag and minor ol Lobate lava flow
3352-3 18 10.72 113 20.90 2668 Folded sheet lava with 5-10% plag oliv Sheet flow
3352-4 18 10.92 113 20.86 2688 Plag-phyric sheet lava near E wall of graben
3352-5 18 11.02 113 20.98 2678 Lobate crust with ~ 10% plag, olivine. Lobate crust
3352-6 18 11.63 113 21.08 2673 Glassy pillow bud with 10% plagioclase Near ctc b/w pillow mounds
3352-7 18 12.29 113 21.21 2656 Large bud with 5-10% plagioclase Top of bathymetric high
3352-8 18 12.66 113 21.23 2673 sheet lava with < 1% plag ( oliv) Piece of sheet flow
3352-9 18 12.99 113 21.77 2681 Pillow fragment with ~ 5% plag + oliv Pillow flow
3352-10 18 12.99 113 21.22 2652 Pillar top, sparsely phyric plag-ol Pillar top
Dive 3353
3353-1 18 21.70 113 22.91 2668 Glass crust from sheet flow Flat sheet flow; heavy sed
3353-2 18 21.62 113 22.98 2668 Bud with fuzzy Mn coating on glass Pillow field above lobates
3353-3 18 21.62 113 23.04 2674 Top portion of pillar In collapse
3353-4 18 21.49 113 23.05 2669 Very tip of bud; glass only Pillow field
3353-5 18 21.33 113 23.03 2661 Sheet flow crust, <1 vol % plag Sheet flow
3353-6 18 21.27 113 23.00 2666 Sheet flow crust Collapse feature at W wall
3353-7 18 20.87 113 23.05 2637 Glassy folded sheet lava Top of hill, lip of crater
3353-8 18 20.52 113 23.09 2651 Glassy pillow bud 8 cm in diameter Field of pillows
Dive 3354
3354-1 18 16.93 113 21.64 2682 glassy folded sheet, <1% plag crystals E side of axis
3354-2 18 16.95 113 21.89 2646 pillow bud; <1% plag crystals Near top of ridge on E flank
3354-3 18 17.09 113 22.05 2658 sheet/lobate crust; <1% plag Below >12m fault scarp
3354-4 18 17.18 113 22.15 2688 lobate piece; 1-2% plag and gabbros Top of 7m-high pillar
3354-5 18 17.38 113 22.43 2698 lobate crust; 1% plag crystals Floor of inner ditch
3354-6 18 17.42 113 22.59 2650 lobate lava, <1% plag Near top of West wall
3354-7 18 17.64 113 22.34 2667 lobate crust; rare <<1% plag in clusters "Bench" suface of graben
3354-8 18 17.83 113 22.21 2657 pillow piece; <<1% plag Draping scarps, E side of graben
3354-9 18 17.93 113 22.38 2676 small piece of sheet flow; <<1% plag E side of inner ditch
3354-10 18 17.95 113 22.42 2677 Mn-coated pillar top; <<1% plag East side of inner ditch
3354-11 18 18.24 113 22.29 2641 pillow/lobate with glass bud; <1% plag East wall, above talus ramp
3354-12 18 18.26 113 22.25 2631 pillow/lobate lava crust; <1% plag Above 2nd scarp on E wall
Dive 3355
3355-1 18 14.67 113 21.63 2645 Pillow bud of aphyric basalt East flank, on terrace
3355-2 18 14.58 113 21.79 2689 Lobate crust with ~ 1% plag and 1 cm gabbroic to troctolitic inclusions Bench on middle of east wall
3355-3 18 14.68 113 22.11 2641 Aphyric glassy sheet lava with folds Middle step; W wall
3355-4 18 14.77 113 21.85 2677 Pillow bud; 3-5% ol + plag Almost down into graben
3355-5 18 14.80 113 21.74 2647 Lobate crust, essentially aphyric Middle of wall on E side
3355-6 18 14.88 113 21.59 2643 Aphyric lobate crust Top of scarp on east wall
3355-7 18 15.05 113 21.94 2689 Pillow bud, with 4-5% ol + plag Down east wall
3355-8 18 15.07 113 22.03 2664 Lobate crust with < 1% scattered plag Pillar top from central axis
3355-9 18 15.32 113 21.96 2693 Pillow bud; ~ 5% ol + plag and gabbroic xenoliths Untectonized graben floor
3355-10 18 15.38 113 21.93 2670 lobate crust, << 1% plag olivine Up first step on E side of graben
3355-11 15.43 113 21.80 2653 Aphyric lobate or very large pillow bud ~ 50 m from extinct chimney
Dive 3356
3356-1 18 12.96 113 20.55 2758 Basalt with < 1% plag Pillow field with 70% sed
3356-2 18 12.97 113 20.71 2695 Aphyric basalt with thin glass rind In graben, with heavy sed
3356-3 18 13.04 113 20.65 2707 Plag-phyric basalt with glass rind Near WP 3
3356-4 18 13.13 113 20.85 2635 Glass rind. 1% plag. phenocrysts Pillow flow at top of ridge
3356-5 18 13.21 113 21.12 2634 Basalt with 1% plag phenocrysts Same location as sample #4
3356-6 18 13.14 113 21.35 2679 Basalt with glasy rind and ~ 5% plag Younger flow; axis bottom
3356-7 18 13.11 113 21.55 2668 Basalt slab - no glass. Minor plag. West wall
3356-8 18 13.01 113 21.43 2679 Basalt with glass rinds and some plag Pillows in summit depression
3356-9 18 12.98 113 21.30 2678 Basalt with glass rind. Sub-mm plag E side of summit depression
3356-10 18 12.80 113 21.37 2687 Very plag rich (10%) basalt Summit depression
3356-11 18 12.71 113 21.40 2678 Basalt with glass rind; <1% plag Top of shelf on west wall
3356-12 18 12.66 113 21.31 2670 Basalt with large plag. (~5%) Curtain-folded sheet lava
3356-13 18 12.71 113 21.22 2659 Basalt with glass rind. <1% plag
3356-14 18 12.76 113 21.12 2639 Basalt crust with glass rind. Plag(<1%) Depression at top of E wall
3356-15 18 12.77 113 21.10 2635 Glassy basalt; rare plag. ~ 1mm Folded sheets on top of E ridge
3356-16 18 12.59 113 21.02 2630 Basalt with glass rind and 1% plag Top of east ridge
3356-17 18 12.30 113 21.02 2634 Glassy basalt. Rare plag. phenocrysts Crest of east flank
Dive 3357
3357-1 17 27.88 113 13.70 2739 Lobate fragment with glassy surface Age 2, 1.5 km W of axis
3357-2 17 27.94 113 13.63 2721 Lobate crust with glassy surface Pillow/lobate flow
3357-3 17 27.92 113 13.45 2644 Lobate bud fragment. Young lobate flow
3357-4 17 27.82 113 13.17 2589 Jumbeled sheet flow fragment ~550 m west of axis
3357-5 17 27.81 113 12.86 2568 Folded sheet lava with fresh glass Wall of axial collapse
3357-6 17 27.89 113 12.48 2599 Pillow bud, few plags, <1 mm long Pillow flow, 600 m east of axis
3357-7 17 28.07 113 12.39 2621 Sheet flow fragment with fresh glass ~600 m east of axis
3357-8 17 28.06 113 12.58 2605 Lobate crust with 3-4 mm glassy crust Edge of pit, ~200 m E of axis
3357-9 17 28.09 113 12.98 2568 Lobate fragment with glass up to 1.5 cm Margin of collapse
Dive 3358
3358-1 17 25.31 113 12.59 2613 A handful of fragments Folded sheet flow
3358-2 17 25.37 113 12.38 2540 Aphyric glassy bud. Glass 1.2 cm thick ~130 m W of Oasis vent
3358-3 17 25.49 113 12.14 2583 Aphyric bud With barnacles and anemone
3358-4 17 25.32 113 12.17 2575 Lobate crust. striated glass, <1% plag Age 0.5 - 1.0 flow
Dive 3359
3359-1 17 33.55 113 14.16 2609 Aphyric, trinagular sheet 36 cm a side Lobate collapse structure
3359-2 17 33.60 113 14.29 2598 Small, aphyric pillow bud 300 m from WP 1
3359-3 17 33.64 113 14.37 2591 Aphyric lobate 41x29x10 cm Edge of collapse
3359-4 17 33.69 113 14.51 2605 A bud with slight white staining Old lava, W side of axis
3359-5 17 33.84 113 14.45 2597 Glassy, aphyric bud Lobates at axis
3359-6 17 34.07 113 14.43 2596 Broken bud. with 1 cm glass Pillow lava at axis
3359-7 17 34.53 113 14.58 2589 14 cm aphyric folded sheet 4 cm thic. Top of tumulus
3359-8 17 34.73 113 14.67 2592 Broken bud Pillow flow above lobates
3359-9a 17 35.36 113 14.78 2591 Elongated bud - mainly glass Pillow flow
3359-9b 17 35.36 113 14.78 2591 Part of a bud. Glass aphyric Same outcrop as sample 9a
3359-10 17 35.53 113 14.79 2593 A 9 cm long bud with local plag Pillows at axis
Dive 3360
3360-1 17 28.65 113 13.76 2707 pillow; <1% plag and olivine, pl>ol Pillow country
3360-2 17 28.59 113 13.46 2595 pllow flow; <<1% plag Pillow country
3360-3 17 28.54 113 13.30 2573 bud from lobate; <<1% plag) and oliv (?) Lobate lava
3360-4 17 28.43 1113 3.12 2574 folded sheet flow; <<1% plag + oliv (?) Collapsed channel
3360-5 17 28.64 1113 3.11 2569 lobate crust, <1% plag and rare olivine E edge of trough
3360-6 17 28.81 113 12.62 26__ pillow fragment; <1% plag and oliv; pl>ol East flank of axis
3360-7 17 28.90 113 13.02 2581 bud fragment, <1% plag and oliv, ol>pl Younger flow
3360-8 17 29.13 113 13.13 2572 tube of lava, <1% plag, no vesicles Youngest flow flowing into pit
3360-9 17 29.58 113 13.20 2572 lobate crust, <<1% plag and minor oliv Axis pillows and lobates
Dive 3361
3361-1 17 31.10 113 13.21 2634 sheet flow pieces with glassy rinds East flank; age = 2.5 - 3.0
3361-2 17 31.40 113 13.40 2618 Nearly aphyric pillow bud 1-2% plag Just W of ctc with pillows
3361-3 17 31.40 113 13.66 2582 lobate crust with 1% pl + ol Axial high on east side
3361-4 17 31.10 113 13.97 2589 Two pillow buds with 1-2% pl + ol Pillow hill, age 2.0; W of axis
3361-5 17 30.93 113 13.75 2585 chunk with << 1% tiny plag; zero Mn Just E of contact
3361-6 17 30.90 113 13.65 2582 Lobate crust, with << 1% plag Edge of axial collapse
3361-7 17 30.57 113 13.62 2586 Aphyric, lineated black glass Sheet flow; base of collapse
3361-8 17 30.30 113 13.61 2596 pillow bud piece with << 1% plag On axis
3361-9 17 30.19 113 13.59 2601 Aphyric lobate shell with 1% plag Young flow
3361-10 17 30.08 113 13.28 2585 Small chunks with <1% tiny pl + oliv Older, east flank pillows
3361-11 17 29.98 113 13.42 2577 Aphyric buds with 2 cm thick glassy rind West side of axis
3361-12 17 29.95 113 13.82 2604 Plag-bearing lobate lava with 1-2% plag Edge of collapse crater
3361-13 17 29.93 113 13.54 2601 Pillow bud or tube with 1-2% plag Edge of mound, west of axis
3361-14 17 29.72 113 13.12 2598 pillow bud with << 1% tiny plag
Dive 3362
3362-1 17 24.98 113 12.37 2583 Basalt with < 1% ol. + pl Lobate flow; edge of collapse
3362-2 17 24.90 113 12.18 2584 Basalt with 5% plag. microphenocrysts Younger lobate/pillow flow
3362-3 17 24.80 113 12.25 2583 Basalt with up to 1 cm. ol. phenocrysts Older (?) lobate flow
3362-4 17 24.81 113 11.97 2584 Basalt with 2% plag plus rare ol Younger (?) pillow flow
3362-5 17 24.80 113 11.78 2594 Basalt with 2% plag plus rare ol Older (?) lobate flow
3362-6 17 24.93 113 11.97 2581 Basalt with plag. microphenocrysts Younger pillows
Dive 3363
3363-1 17 31.73 113 14.07 2610 Sheet flow fragment with glassy surface Age 2.5 sheet flow.
3363-2 17 31.80 113 13.98 2591 Pillow bud fragment with glassy surface Age 1.5 pillows.
3363-3 17 31.8 113 13.97 2587 Lobate crust with glassy surface Age 1.5 lobates
3363-4 17 32.16 113 13.78 2585 Lobate crust almost entirely glass Age 1 pillows and lobates.
3363-5 17 32.17 113 14 2590 Sheet flow fragment with glass Age 0.5 sheet flow near collapsed lava lake.
3363-6 17 32.29 113 14.20 2601 Glassy pIllow fragment with ~ 1% plag Age 1 pillows
3363-7 32.63 113 14.15 2592 Lobate fragment with bathtub rings Scattered plagioclase Sheet flow near collapsed lava lake
3363-8 17 32.82 113 14.19 2595 Top of sheet flow, all glass. Few scattered plagioclase Folded sheet flow on floor of lava channel
3363-9 17 32.89 113 14.30 2605 Pillow bud, entirely glass. Few plag; one troctolite Age 1 pillows
Dive 3364
3364-1 17 27.03 113 13.56 2711 Two sheet pieces welded together Age 1.5 - 2 lobate lavas
3364-2 17 27.04 113 13.28 2631 Bud with aphyric glass; minor pl. in rock Bud from younger lobate
3364-3 17 26.96 113 12.65 2578 Folded sheet; aphyric glass Floor of Lake Aldo
3364-4 17 27.05 113 12.16 2602 Aphyric pillow crust (?) Younger lava near contact
3364-5 17 27.16 113 12.15 2609 Five pieces of lobate crust Older lobate lava
3364-6 17 27.22 113 12.69 2569 Triangular sheet with glass on top From collapse margin
3364-7a 17 27.21 113 12.74 2566 Top of aphyric pillar Top of pillar in Lake Aldo
3364-7b 17 27.21 113 12.74 2566 Lower part of a pillar. Pillar in Lake Aldo; same sample as # 7a
3364-8 17 27.27 113 12.715 2572 Top part of pillar. Glassy bathtub marks on the outside Pillar portion that fell into basket
3364-9 17 27.27 113 12.715 2573 Pillar piece with glassy bathtub rings and glass lined inner tube Bottom platform of pillar, same as sample # 8.
3364-10 17 27.28 113 12.73 2577 sheet flow with a 2 cm thick glass skin Sheet lava from axial floor
Dive 3365
3365-1 17 25.88 113 11.67 2622 Pillow bud, 2-3 % large plag Age 2 pillows with buds
3365-2 17 25.68 113 11.91 2586 Aphyric pillow bud in 2 pieces Younger pillows
3365-3 17 25.67 113 11.97 2580 Pillow bud. Contains <1% plag; rare ol Youngest pillows/lobates
3365-4 17 25.91 113 12.31 2567 Aphyric, glassy bud Very young pillows, at ctc
3365-5 17 25.90 113 12.28 2568 lobate crust; < 1% small (<<1 mm) plag Older lobate lavas
3365-6 17 25.90 113 12.52 2587 lobate crust <1 vol% plag Older lobate lava
3365-7 17 26.21 113 12.68 2989 Bud with <1% plag; rare ol Younger pillows near contact
3365-8 17 26.55 113 12.74 2578 Aphyric bud; no Mn coating Younger pillows


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This page last modified on 3 June 1999