Micropaleontological,mineralogical, and geochemical record in late quaternary cores from abyssal Grenada Basin |
| |
| Authors: | Barun K Sen Gupta Michel Pujos J- C Pons James J Galluzzo Paul Aharon M Parra |
| |
| Institution: | (1) Department of Geology and Geophysics, Louisiana State University, 70803 Baton Rouge, Louisiana, USA;(2) Département de Géologie et Océanographie, Université de Bordeaux I, Avenue des Facultés, 33405 Talence Cedex, France;(3) Institut de Géologie du Bassin d'Aquitaine, Université de Bordeaux I, 33405 Talence Cedex, France;(4) Present address: Texaco Inc., P.O. Box 60252, 70160 New Orleans, Louisiana, USA |
| |
| Abstract: | Clay mineralogy and trace-element geochemistry of two abyssal cores indicate that the primary source of surface-current-transported
detrital material in the southern Grenada Basin changed from a continental, South American terrane to a volcanic, Lesser Antillean
terrane at the end of the Pleistocene. The record of benthic foraminiferal assemblages demonstrates that the Caribbean Bottom
Water (CBW) was relatively oxygen poor and less corrosive in late Pleistocene glacial times than in interglacial times. The
change in the properties of CBW in the Holocene was related to a renewed influx of North Atlantic Deep Water in the Caribbean. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
