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Paleoenvironmental changes and influence on Operculodinium centrocarpum during the Quaternary in the Campos Basin, southwestern Brazil.
- Source :
-
Journal of South American Earth Sciences . Dec2017, Vol. 80, p255-271. 17p. - Publication Year :
- 2017
-
Abstract
- The purpose of this paper is to document the changes observed in the Quaternary dinoflagellate assemblages from 80 core samples from the Campos Basin. The Interglacial (Subzone X1), Glacial (Subzones Y5 to Y2), Last Glacial Maximum (Subzone Y1) and Post-Glacial (Zone Z) intervals were identified. High abundance of Operculodinium centrocarpum suggests the warm, high salinity and nutrient-poor water conditions dominated the upper water column of the Campos Basin. The climate and oceanic current dynamic of the continental slope of the Campos Basin appears to has been a significant controlling factor in the distribution of dinocysts, particularly of O. centrocarpum , during the Pleistocene/Holocene transition. [ABSTRACT FROM AUTHOR]
- Subjects :
- *DINOFLAGELLATE cysts
*SALINITY
*OCEAN currents
*QUATERNARY paleoclimatology
Subjects
Details
- Language :
- English
- ISSN :
- 08959811
- Volume :
- 80
- Database :
- Academic Search Index
- Journal :
- Journal of South American Earth Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 126364892
- Full Text :
- https://doi.org/10.1016/j.jsames.2017.09.020