Mineralogy and geochemistry at DSDP Hole 62-465A
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PANGAEA
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| Hauptverfasser: | , |
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
1981
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| _version_ | 1867168564614529024 |
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| author | Koski, Randolph A Hein, James R |
| author_facet | Koski, Randolph A Hein, James R |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_819787 |
| institution | PANGAEA |
| language | en |
| publishDate | 1981 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Mineralogy and geochemistry at DSDP Hole 62-465A Koski, Randolph A Hein, James R 62-465A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg62; North Pacific/CONT RISE 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. |
| title | Mineralogy and geochemistry at DSDP Hole 62-465A |
| topic | 62-465A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg62; North Pacific/CONT RISE |
| url | https://doi.org/10.1594/PANGAEA.819787 |