Petrographic and chemical characteristics of pyrite-marcasite mineralization in hole 465A, southern Hess Rise
Initial reports of the Deep Sea Drilling Project
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Abstract
Core recovered from Hess Rise contains concentrations of pyrite, marcasite, and barite in the lowermost meter of limestone (Unit II) and in the brecciated upper part of the underlying volcanic basement (Unit HI). Petrographic and chemical data indicate that the sulfide-barite assemblage in the limestone is mainly a product of low-temperature diagenetic processes. The iron-sulfide phases are biogenic and their concentrations mark the diffusion of sea water sulfate through sedimentary horizons containing abundant organic matter and mafic, glassy volcanogenic detritus. There is some evidence, however, that elevated temperatures augmented or intensified the synsedimentary diagenetic process.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Petrographic and chemical characteristics of pyrite-marcasite mineralization in hole 465A, southern Hess Rise |
| Series title | Initial reports of the Deep Sea Drilling Project |
| DOI | 10.2973/dsdp.proc.62.141.1981 |
| Volume | 62 |
| Year Published | 1981 |
| Language | English |
| Publisher | Texas A&M |
| Contributing office(s) | Geology, Minerals, Energy, and Geophysics Science Center, Pacific Coastal and Marine Science Center |
| Description | 8 p. |
| First page | 855 |
| Last page | 862 |
| Google Analytic Metrics | Metrics page |