Foraminiferal species and dissolution index at DSDP Hole 78-541
| Cobertura |
LATITUDE: 15.520000 * LONGITUDE: -58.728300 * DATE/TIME START: 1981-02-13T00:00:00 * DATE/TIME END: 1981-02-13T00:00:00 |
|---|---|
| Data(s) |
14/03/1984
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| Resumo |
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 |
| Formato |
application/zip, 3 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.808882 doi:10.1594/PANGAEA.808882 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Hemleben, Christoph; Auras, Anabelle (1984): Variations in the calcite dissolution pattern on the Barbados Ridge Complex at Sites 541 and 543, Deep Sea Drilling Project Leg 78A. In: Biju-Duval, B; Moore, JC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 78A, 471-497, doi:10.2973/dsdp.proc.78a.124.1984 |
| Palavras-Chave | #78-541; Calculated, see reference(s); Deep Sea Drilling Project; Dis ind; Dissolution index; DRILL; Drilling/drill rig; DSDP; Foram; Foram bent; Foraminifera; Foraminifera, benthic; Fraction; G. aequilateralis; G. altispira; G. conglobatus; G. crassaformis; G. falconensis; G. menardii; G. multicamerata; G. praehirsuta; G. ruber; G. sacculifer; G. truncatulinoides; Globigerina falconensis; Globigerinella aequilateralis; Globigerinoides conglobatus; Globigerinoides ruber; Globigerinoides sacculifer; Globoquadrina altispira; Globorotalia crassaformis; Globorotalia menardii; Globorotalia multicamerata; Globorotalia praehirsuta; Globorotalia truncatulinoides; Glomar Challenger; Including G. bulloides; Including G. obliquus; Including G. scitula; Including G. tumida; Including S. paenedehiscens; Incluing G. miocenica; Leg78; N. acostaensis; N. dutertrei; Neogloboquadrina acostaensis; Neogloboquadrina dutertrei; North Atlantic/RIDGE; O. universa; ODP sample designation; Orbulina universa; P. obliquiloculata; Pulleniatina obliquiloculata; S. dehiscens; Sample code/label; see reference(s); Size fraction; Sphaeroidinella dehiscens; The low FDX of 4 indicates a depositional environment at or slightly above the lysocline; Unit is µm |
| Tipo |
Dataset |
