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Composition of massive sulfide deposits from the sediment-covered floor of Escanaba Trough, Gorda Ridge: implications for depositional processes

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Composition of massive sulfide deposits from the sediment-covered floor of Escanaba Trough, Gorda Ridge: implications for depositional processes; 1988; Article; Journal; Canadian Mineralogist; Koski, Randolph, A.; Shanks, Wayne, C. III.; Bohrson, Wendy, A.; Oscarson, Robert, L.

Summary

Massive sulfide deposits with two distinct compositions are spatially related to volcanic edifices that penetrate up to 500 m of turbiditic sediment in Escanaba Trough (ET), southern Gorda Ridge. The mineralogy, metal content, sulfur isotope composition, and hydrocarbon content of massive sulfides from ET reflect the extensive interaction between underlying turbiditic sediment and hydrothermal fluid. Pyrrhotite-rich sulfide mounds are inferred to have formed under gentle temperature and chemical gradients related to diffuse, low-velocity flow through disrupted sediment near the sediment-capped hills.

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Type Scheme Key
local-index unknown 70014331
local-pk unknown 70014331
series unknown Canadian Mineralogist

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citationTypeArticle
conferenceSeafloor Hydrothermal Mineralization
journalCanadian Mineralogist
languageEnglish
parts
typevolume
value26 pt 3

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