Data Trawler - Deployment Details

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Deployment Details

Survey: - SS200302 [details]

Deployment Type: - Sediment Sampling

Station: TD-61

When: 2003-04-01 02:49 UTC

Where: 22° 11.0' S    176° 12.2' E

Maximum Depth (m): unknown

Sediment Sampling details

Device used: Dredge - unspecified

ContentsTop (m)Base (m)
10 x 10 x 5 cm boulder of weathered subangular lava fragments typically 2-5 mm in diameter; conglomerate. Includes a large 10 x 10 x 2 cm clast of black highly vesicular (30%) sparsely plagioclase phyric (2%) basalt. Clast has a brown-orange weathering rind 4 mm thick underlain by a yellow-green rind 3 mm thick, but the interior is fresh.
Large boulder of bedded volcaniclastic conglomerate and sandstone. Contains one clast of dark grey plagioclase phyric (5%) vesicular (10%; irregular to 5 mm across) basalt. Denser than 61-01. Discolored and Fe-stained on surfaces. No glass.
As for 61-02, but all of boulder is conglomerate.
Black glassy sands, plagioclase crystals and biota (dominated by sponge spicules) from the sediment pipes.
Small pebble 3 cm long of dense non-vesicular plagioclase phyric (20%) andesite. Markedly different from other lithologies in the haul, and interpreted as contamination from the previous dredge (which contained similar lithologies).
Red-brown Fe-oxyhydroxide aggregates and Fe-coated pumice fragments, handpicked from pipe dredge sediment.
Black fresh vesicular (15%: to 4 mm across) plagioclase phyric (10%) basalt. No adhering conglomerate or weathering.
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