Data Trawler - Deployment Details

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Deployment Details

Survey: - SS200302 [details]

Deployment Type: - Sediment Sampling

Station: TD-52

When: 2003-03-30 06:27 UTC

Where: 22° 08.4' S    176° 36.9' E

Maximum Depth (m): unknown

Sediment Sampling details

Device used: Dredge - unspecified

ContentsTop (m)Base (m)
Black lava (andesite?). Sparsely phyric with traces of dark green clinopyroxene up to 5 mm across. Hackly glass crust intermittently developed on surfaces. Abundant small vesicles (25%) to 2 mm across and large irregular elongate voids in the interior. Fresh.
Dark grey pillow fragments. Sparsely phyric with 1-2 % small plagioclase phenocrysts. Thin glass crust which is black and has a distinctive texture consisting of aligned rectangular or rod-like fragments. Highly vesicular (20%), with spherical vesicles to 3-4 mm across. Weakly weathered along fractures.
White aphyric pumice. Locally MnOx stained surfaces.
As for 52-01, but only sparsely vesicular (5%). Strongly sheared fabric. Minor yellow-orange alteration below the glass crust.
Fresh black aphyric lava. Shiny ropey glass crust. Very rare traces of clinopyroxene phenocrysts. Youngest lava in haul. One piece has orange Fe-Si staining.
As for 52-02, but glass is smooth and ropey-textured. Somewhat more yellow-orange staining (older?). Includes sparse small (2 mm clinopyroxene phenocrysts) and 10% plagioclase microphenocrysts (<1 mm across).
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