Data Trawler - Deployment Details

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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

ContentsTop (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.
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