Geochemistry at DSDP Legs 56-57 Holes
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| Auteurs principaux: | , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
1980
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| _version_ | 1867169510409109504 |
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| author | Fujioka, Kantaro Furuta, Toshio Arai, Fusao |
| author_facet | Fujioka, Kantaro Furuta, Toshio Arai, Fusao |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | About 200 volcanic ash layers were recovered during DSDP Leg 57. The volcanic glass in some of these layers was investigated petrographically and chemically in this study. Volcanic glass is mainly rhyolitic and/or rhyodacitic in chemical composition, and its refractive index ranges from 1.496 to 1.529. Some volcanic ash layers consist of multiple grains of different chemical compositions. All the volcanic glass belongs to the tholeiitic and the calc-alkalic volcanic rock series, in SiO2-(Na2O + K2O) diagram and FeO*/MgO-SiO2 diagram. We correlated successfully three volcanic ash layers from the standpoint of chemical composition and biostratigraphy. Hydration of volcanic glass from Leg 57 is less intense than in other DSDP cores. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_822154 |
| institution | PANGAEA |
| language | en |
| publishDate | 1980 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Geochemistry at DSDP Legs 56-57 Holes Fujioka, Kantaro Furuta, Toshio Arai, Fusao 56-436; 57-438; 57-438A; 57-438B; 57-439; 57-440; 57-440A; 57-440B; 57-441; 57-441A; 57-441B; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg56; Leg57; North Pacific/BASIN; North Pacific/RIDGE; North Pacific/TRENCH About 200 volcanic ash layers were recovered during DSDP Leg 57. The volcanic glass in some of these layers was investigated petrographically and chemically in this study. Volcanic glass is mainly rhyolitic and/or rhyodacitic in chemical composition, and its refractive index ranges from 1.496 to 1.529. Some volcanic ash layers consist of multiple grains of different chemical compositions. All the volcanic glass belongs to the tholeiitic and the calc-alkalic volcanic rock series, in SiO2-(Na2O + K2O) diagram and FeO*/MgO-SiO2 diagram. We correlated successfully three volcanic ash layers from the standpoint of chemical composition and biostratigraphy. Hydration of volcanic glass from Leg 57 is less intense than in other DSDP cores. |
| title | Geochemistry at DSDP Legs 56-57 Holes |
| topic | 56-436; 57-438; 57-438A; 57-438B; 57-439; 57-440; 57-440A; 57-440B; 57-441; 57-441A; 57-441B; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg56; Leg57; North Pacific/BASIN; North Pacific/RIDGE; North Pacific/TRENCH |
| url | https://doi.org/10.1594/PANGAEA.822154 |