Foraminiferal species and dissolution index at DSDP Hole 78-541
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| Autores principales: | , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
1984
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| _version_ | 1867167669790179328 |
|---|---|
| author | Hemleben, Christoph Auras, Anabelle |
| author_facet | Hemleben, Christoph Auras, Anabelle |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The calcite compensation depth (CCD) fluctuates as a result of changes in the water-mass system, thereby producing a distinct dissolution pattern. Differential dissolution changes the composition of the foraminiferal assemblages, reflecting the depositional environment in respect to the fluctuating CCD. The dissolution pattern for the comparatively shallow Site 541 on the Barbados Ridge indicates a depositional environment mostly above the CCD, but below the foraminiferal lysocline during the late Miocene to early Pleistocene. In contrast, sediments of the deeper-water Site 543 indicate a depositional environment above the CCD during the late Pliocene to early Pleistocene only. Furthermore, similarities in the dissolution pattern of corresponding time intervals of Site 541 (represented by superimposed faulted intervals termed Tectonic Units A and B) are recognizable. Sediments deposited clearly above the foraminiferal lysocline are rare |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_808882 |
| institution | PANGAEA |
| language | en |
| publishDate | 1984 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Foraminiferal species and dissolution index at DSDP Hole 78-541 Hemleben, Christoph Auras, Anabelle 78-541; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg78; Leg78AB; North Atlantic/RIDGE The calcite compensation depth (CCD) fluctuates as a result of changes in the water-mass system, thereby producing a distinct dissolution pattern. Differential dissolution changes the composition of the foraminiferal assemblages, reflecting the depositional environment in respect to the fluctuating CCD. The dissolution pattern for the comparatively shallow Site 541 on the Barbados Ridge indicates a depositional environment mostly above the CCD, but below the foraminiferal lysocline during the late Miocene to early Pleistocene. In contrast, sediments of the deeper-water Site 543 indicate a depositional environment above the CCD during the late Pliocene to early Pleistocene only. Furthermore, similarities in the dissolution pattern of corresponding time intervals of Site 541 (represented by superimposed faulted intervals termed Tectonic Units A and B) are recognizable. Sediments deposited clearly above the foraminiferal lysocline are rare |
| title | Foraminiferal species and dissolution index at DSDP Hole 78-541 |
| topic | 78-541; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg78; Leg78AB; North Atlantic/RIDGE |
| url | https://doi.org/10.1594/PANGAEA.808882 |