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Deployment Details
Survey: - FR199709 [details]
Deployment Type: - Sediment Sampling
Station: MD-102
When: 1997-10-23 08:59 UTC
Where: 3° 43.3' S 151° 40.5' E
Maximum Depth (m): 1690
Sediment Sampling details
Device used: Dredge - unspecified
| Contents | Top (m) | Base (m) |
|---|---|---|
| py-sp-oxide chimney fragments from sediment traps | ||
| oxidised sulfide-oxide chimney fragments, up to 5cm. Py, sp, jarosite present | ||
| same material as 134064 | ||
| 20x10x8cm barnacle encrusted extinct chimney. Strongly oxidised: goe-MnO-jarosite-minor sp | ||
| 8x6x4cm piece of same material as 134066, probably same chimney | ||
| 6x4x3cm piece of same material as 134066, probably same chimney. Fine an and jarosite blades visible in cavities | ||
| approximately 20 sulfide +/- oxide fragments picked from dredge liner | ||
| black oxide crust off chimney | ||
| black oxidised massive sulfide. Composition mostly masked by oxide coat, minor py, cp, sulfate visible | ||
| three fragments of a single (?) chimneylet, 1 cm in diameter with cp-rich core | ||
| four 1cm fragments of finely structured cp +/-sulfate chimneylet | ||
| same material as 134073, 7 fragments | ||
| two small pyritic fragments | ||
| 6x2x2cm cylindrical chimney fragment. Oxide outer surface, 5mm orifice lined with cp |