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Deployment Details
Survey: - FR199305 [details]
Deployment Type: - Sediment Sampling
Station: MD-35
When: 1993-06-15 16:20 UTC
Where: 3° 43.4' S 151° 40.5' E
Maximum Depth (m): 1700
Sediment Sampling details
Device used: Dredge - unspecified
| Contents | Top (m) | Base (m) |
|---|---|---|
| dacite chips, stained shell fragments and sulphide chips from sediment traps | ||
| main very large chimney fragment | ||
| glassy, vesicular dacite, Fe-stained | ||
| glassy, vesicular dacite, Fe-stained | ||
| large sulphide chimney fragment, many vents | ||
| sulphide chimney fragment, with open vent lined with chalcopyrite crystals | ||
| sulphide chimney fragment with chalcopyrite and wurtzite? crystals in vents, orange and white bacteria on outer Fe oxide surface, Hairy | ||
| sulphide chimney fragment, flat structure, sulphate crystals on chalcopyrite and wurtzite? vent linings | ||
| long cylindrical sulphide chimney fragments, the twins | ||
| long cylindrical sulphide chimney fragments, the twins | ||
| beautiful chalcopyrite-rich chimney fragment, from centre of vent to rim, black coating on chalcopyrite crystals -> radiating, bladed chalcopyrite crystals (replacing sulphates?) -> massive granular chalcopyrite-> sulphate crystals -> Fe-Mn oxides on outer weathered surface. | ||
| beautiful Fe stained (yellow-orange-red) dacite fragments | ||
| beautiful Fe stained (yellow-orange-red) dacite fragments | ||
| paperweight sample, small sulphide chimney adjacent to Fe stained dacite | ||
| zoned sulphide chimney fragment, black coating on chalcopyrite crystals -> massive granular chalcopyrite-> black sulphide (ZnS?) zone -> sulphate crystals -> Fe-Mn oxides on outer weathered surface. | ||
| small sulphide chimney fragment with tiny sulphate crystals lining vent | ||
| sulphide chimney fragment with same paragenesis as 118560 with interiors of vents lined with needle-like pointy black, horizontally striated crystals, possibly wurtzite. | ||
| sulphide chimney fragment with same paragenesis as 118560 | ||
| sulphide chimney fragment with chalcopyrite and wurtzite? crystals lining vent in wall of larger vent | ||
| barite?-rich sulphide chimney fragment | ||
| sulphide chimney fragment with abundant wurtzite? in interior of vent | ||
| barite?-rich sulphide chimney fragment | ||
| sulphide chimney fragments | ||
| sulphide chimney fragments | ||
| barite?-rich sulphide chimney fragment | ||
| Fe-oxide crust with sulphates | ||
| sulphide chimney fragment | ||
| wall of sulphide chimney fragment | ||
| sulphide chimney fragment with wurtzite and sulphate crystals lining interior of vent | ||
| sulphide chimney fragments | ||
| dacite fragment surrounded by sulphides | ||
| Fe-stained dacite fragments | ||
| glassy, vesicular dacite, some weakly Fe-stained |