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Deployment Details
Survey: - SS200302 [details]
Deployment Type: - Sediment Sampling
Station: TD-20
When: 2003-03-23 10:39 UTC
Where: 22° 30.8' S 176° 41.4' E
Maximum Depth (m): unknown
Sediment Sampling details
Device used: Dredge - unspecified
| Contents | Top (m) | Base (m) |
|---|---|---|
| Black andesite pillows, typically 1-5 cm thick with glass encrusted surfaces. Fresh. Glass very well-developed. Sparsely phyric, with 1-2 plagioclase phenocrysts per block. Wide range in vesicularity within most blocks- some have vesicular cores and dense rims whereas others are vice-versa. | ||
| One large pillow sector of dark grey plagioclase andesite. Vesicular. All surfaces weakly weathered or altered (black, red, orange, yellow stainings). An older flow. No glass. Interior fresh and reveals ~10% plagioclase phenocrysts. | ||
| Very similar to 20-01, but surfaces weakly orange stained and interior of blocks is less glassy. Sparsely phyric with 2-5 plagioclase and olivine phenocrysts per block. Probably an older flow. |