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Deployment Details
Survey: - SS200302 [details]
Deployment Type: - Sediment Sampling
Station: TD-42
When: 2003-03-27 14:01 UTC
Where: 22° 26.5' S 176° 42.9' E
Maximum Depth (m): unknown
Sediment Sampling details
Device used: Dredge - unspecified
| Contents | Top (m) | Base (m) |
|---|---|---|
| Fresh black aphyric lava characterised by many tiny vesicles (spherical) and a second generation of sparser larger elongate vesicles. Good rind of fresh vesicular glass on one or both sides of blocks. Top of flows are striated. | ||
| Black rock with many tiny vesicles, similar to 42-01 except that the exterior is a friable mass of glass bubbles and tubes that point away from the rock core. No striated glass. | ||
| A very glassy unit. The exterior is composed of chips of glass agglutinated together., with most chips ~3 mm across. The interior is glassy with a few vesicles to 2 mm across. The exterior is somewhat friable as the agglutination process (welding?) is incomplete. Could be collapsed bubbles rather than welded chips. | ||
| Similar to 42-01, but a block with a striated glass rind. The tiny vesicles are nearly absent, although the larger vesicle population is present. More massive. |