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

Canadian Mineralogist

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Abstract

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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Composition of massive sulfide deposits from the sediment-covered floor of Escanaba Trough, Gorda Ridge: implications for depositional processes
Series title:
Canadian Mineralogist
Volume
26 pt 3
Year Published:
1988
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Canadian Mineralogist
First page:
655
Last page:
673
Number of Pages:
19
Conference Title:
Seafloor Hydrothermal Mineralization
Conference Location:
Montreal, Que, Can
Conference Date:
5 February 1987 through 6 February 1987