The last occurrence of Proboscia curvirostris in the North Atlantic marine isotope stage 9-8 ...
Well-preserved diatoms are present in high sedimentation rate Pleistocene cores retrieved on Ocean Drilling Program (ODP) Legs 151, 152, 162 and IMAGES cruises of R/V Marion Dufresne from the North Atlantic. Investigation of the stratigraphic occurrence of diatom species shows that the youngest diat...
| Main Authors: | , , , , , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
PANGAEA
2001
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.1594/pangaea.678543 https://doi.pangaea.de/10.1594/PANGAEA.678543 |
| Summary: | Well-preserved diatoms are present in high sedimentation rate Pleistocene cores retrieved on Ocean Drilling Program (ODP) Legs 151, 152, 162 and IMAGES cruises of R/V Marion Dufresne from the North Atlantic. Investigation of the stratigraphic occurrence of diatom species shows that the youngest diatom event observed in the area is the last occurrence (LO) of Proboscia curvirostris (Jousé) Jordan and Priddle. P. curvirostris is a robust species that can easily be identified in the sediments, and therefore can be a practical biostratigraphic tool. We have mapped its areal distribution, and found that it stretches from 40°N to 80°N in the North Atlantic. Further, we have correlated the LO P. curvirostris to the oxygen isotope records of six cores to refine the age of this biostratigraphic event. The extinction of P. curvirostris is latitudinally diachronous through Marine Isotope Stages (MIS) 9 to 8 within the North Atlantic. This is closely related to the paleoceanography of the area. P. curvirostris first ... : Supplement to: Koç, Nalân; Labeyrie, Laurent D; Manthé, Sandrine; Flower, Benjamin P; Hodell, David A; Aksu, Ali E (2001): The last occurrence of Proboscia curvirostris in the North Atlantic marine isotope stages 9-8. Marine Micropaleontology, 41(1-2), 9-23 ... |
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