Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

Journal of the Geological Society

This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by MURRAY, J. W. Search for Related Content GeoRef GeoRef Citation

Neogene bottom water-masses and benthic foraminifera in the NE Atlantic Ocean

Department of Geology, University of Exeter, North Park Road, Exeter EX4 4QE, UK

Modern benthic foraminiferal assemblages show a correlation with oceanic bottom water-masses. A study of the Neogene benthic foraminifera from seven sites to the south and two sites to the north of the Azores Ridge shows patterns of change which can be interpreted in terms of past water-masses. An Antarctic bottom water (AABW) influence has been present to the south since the mid-Miocene but to the north of the Azores Ridge, AABW was present only up to the late Pliocene, since when it has been absent. Overlying AABW is North Atlantic deep water (NADW) and North East Atlantic deep water (NEADW). The latter shows a spectacular increase in importance from the late Pliocene to Recent. The faunal changes can be correlated with changes in circulation in the late Pliocene which heralded the incoming of major glacial events from c. 2.4 Ma.

This article has been cited by other articles:

				B. W. Hayward, H. R. Grenfell, A. T. Sabaa, C. M. Hayward, and H. L. Neil ECOLOGICAL DISTRIBUTION OF BENTHIC FORAMINIFERA, OFFSHORE NORTHEAST NEW ZEALAND Journal of Foraminiferal Research, October 1, 2006; 36(4): 332 - 354. [Abstract] [Full Text] [PDF]

				A. T. S. Ramsay, C. W. Smart, and J. C. Zachos A Model of early to middle Miocene Deep Ocean circulation for the Atlantic and Indian Oceans Geological Society, London, Special Publications, January 1, 1998; 131(1): 55 - 70. [Abstract] [PDF]

				H. A. Armstrong Biotic recovery after mass extinction: the role of climate and ocean-state in the post-glacial (Late Ordovician-Early Silurian) recovery of the conodonts Geological Society, London, Special Publications, January 1, 1996; 102(1): 105 - 117. [Abstract] [PDF]

				C. W. SMART and A. T. S. RAMSAY Benthic foraminiferal evidence for the existence of an early Miocene oxygen-depleted oceanic water mass? Journal of the Geological Society, October 1, 1995; 152(5): 735 - 738. [Abstract] [PDF]

				J. W. Murray Microfossil indicators of ocean water masses, circulation and climate Geological Society, London, Special Publications, January 1, 1995; 83(1): 245 - 264. [Abstract] [PDF]