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Deployment Details
Survey: - SS200302 [details]
Deployment Type: - Sediment Sampling
Station: TD-37
When: 2003-03-26 14:10 UTC
Where: 22° 09.9' S 176° 41.3' E
Maximum Depth (m): unknown
Sediment Sampling details
Device used: Dredge - unspecified
| Contents | Top (m) | Base (m) |
|---|---|---|
| Pale grey aphyric pumice, weak Fe-staining locally on surfaces. Some blocks show gradation to pale pink. Interpreted as recent float from the arc. | ||
| Highly plagioclase-phyric large pillow. Vesicular (5-10%), with spherical vesicles ~2 mm in the interior grading to <<1 mm on the exterior. Weathered friable glass crust. Equant plagioclase phenocrysts (20%) 1-2 mm in diameter, sparser towards the margins. Minor olivine phenocrysts <<1 mm in diameter both singly and in clusters with plagioclase. | ||
| Similar plagioclase-phyric lava to 37-02, but with larger vesicles to 4 mm across, banded, and with clumps of plagioclase up to 3-4 mm across. Minor olivine. Glassy margin 5-10 mm thick, of which only the outer 1-2 mm is glass. | ||
| Similar to 37-06, but larger vesicles. | ||
| Sparsely plagioclase-phyric (2-3%), with ~20% vesicles <1 mm across. | ||
| Aphyric lava. 20% vesicles in bands, ranging from irregular and ~1 mm across to spherical and <<1 mm across. | ||
| Similar to 37-03, but with 15-20% larger vesicles 3-4 mm across. Also fewer plagioclase clots (~5%). |