Mineralogy of the clay fraction from Cenozoic Strata at DSDP Leg 94
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
1987
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| _version_ | 1867167668797177856 |
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| author | Latouche, Claude Maillet, Noelle Philipps, I |
| author_facet | Latouche, Claude Maillet, Noelle Philipps, I |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Leg 94 Sites are located in a large geographic area of the northeastern Atlantic. Clay mineral analyses of the sediments recovered on Leg 94 (Eocene to the present), together with results obtained from previous DSDP legs (47B, 48, 80, 81, 82), provide greater insight into the paleoenvironmental evolution of the northeastern Atlantic. The characteristics of Eocene clay sediments are regional, reflecting, in the absence of strong bottom currents, the influence of neighboring petrographic environments: basic volcanic rocks (Sites 403-406, 552, and 608) and acid volcanic rocks (Sites 508 to 510). During the Oligocene, atmospheric circulation patterns left their mineralogical signatures in the southern part of the area investigated (Sites 558 and 608), whereas during the Miocene the intrusion of northern water masses led to the gradual homogenization of the clay sedimentation throughout the North Atlantic. In the late Pliocene, input from glacial sources became widespread. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_788766 |
| institution | PANGAEA |
| language | en |
| publishDate | 1987 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Mineralogy of the clay fraction from Cenozoic Strata at DSDP Leg 94 Latouche, Claude Maillet, Noelle Philipps, I Deep Sea Drilling Project; DSDP Leg 94 Sites are located in a large geographic area of the northeastern Atlantic. Clay mineral analyses of the sediments recovered on Leg 94 (Eocene to the present), together with results obtained from previous DSDP legs (47B, 48, 80, 81, 82), provide greater insight into the paleoenvironmental evolution of the northeastern Atlantic. The characteristics of Eocene clay sediments are regional, reflecting, in the absence of strong bottom currents, the influence of neighboring petrographic environments: basic volcanic rocks (Sites 403-406, 552, and 608) and acid volcanic rocks (Sites 508 to 510). During the Oligocene, atmospheric circulation patterns left their mineralogical signatures in the southern part of the area investigated (Sites 558 and 608), whereas during the Miocene the intrusion of northern water masses led to the gradual homogenization of the clay sedimentation throughout the North Atlantic. In the late Pliocene, input from glacial sources became widespread. |
| title | Mineralogy of the clay fraction from Cenozoic Strata at DSDP Leg 94 |
| topic | Deep Sea Drilling Project; DSDP |
| url | https://doi.org/10.1594/PANGAEA.788766 |