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Deployment Details
Survey: - SS200302 [details]
Deployment Type: - Sediment Sampling
Station: TD-28
When: 2003-03-24 18:11 UTC
Where: 22° 30.3' S 176° 43.5' E
Maximum Depth (m): unknown
Sediment Sampling details
Device used: Dredge - unspecified
| Contents | Top (m) | Base (m) |
|---|---|---|
| Iron oxide crusts. | ||
| Weakly vesicular dacite with surficial Fe-oxide and sulfate staining developed on fracture surfaces and glassy rinds. About 20% of the lava fragments have these dull brown to slightly iridescent surficial films. Some show yellow-green nontronite clay and black Mn-oxide surfaces. | ||
| An older black aphyric lava with thinner irregular glassy surfaces and crystalline dark grey finely vesicular interior. | ||
| Black aphyric glassy dacite. Irregular and hackly blocks with dense glassy interiors, some with woody flow tops. Fresh. | ||
| Same lithology as 28-02 but logged for petrology. Aphyric and possibly andesitic(?). Contains 5-10% irregular (~1 mm) to elongate (10 x 2 mm) vesicles. |