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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
Contents | Top (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). |