Srinivasan, M. S. and Sinha, Devesh K. (2003): Planktic foraminiferal biogeography and ocean circulation in Southwest Pacific during last 3.3. My

Leg/Site/Hole:
DSDP 89
DSDP 90
DSDP 89 586
DSDP 90 587
DSDP 90 588
DSDP 90 590
Identifier:
2006-001162
georefid
Creator:
Srinivasan, M. S.
Banaras Hindu University, Department of Geology, Varanasi, India
author
Sinha, Devesh K.
author
Identification:
Planktic foraminiferal biogeography and ocean circulation in Southwest Pacific during last 3.3. My
2003
In: Kundal, Pradeep (editor), Recent developments in Indian micropaleontology
Gondwana Geological Society, Nagpur, India
Special volume 6
23-31
Biogeographic patterns of significant tropical to cool subtropical planktic foraminifera from Leg 90 Deep Sea Drilling Project (DSDP) sites have been quantitatively mapped for the last 3.3. my in the Southwest Pacific. Marked differences are apparent in the biogeographic distribution of the Menardella and Globoconella groups before and after 1.77 Ma reflecting changes in surface water circulation. Spatial distribution of Neogloboquadrina pachyderma changed very little in the last 3.3 my except that its frequency increased around 2.58 Ma and again, at 0.78 Ma. The Menardella group established its present day distribution pattern in the Southwest Pacific at 1.77 Ma (Top of Olduvai) and Globigerinoides spp. at 0.78 Ma (Base of Brunhes). The distribution pattern of Globigerina bulloides shows an interval of intense upwelling at 2.58 Ma.
English
Coverage:Geographic coordinates:
North:-0.2950
West:158.2953East: 163.2131
South:-31.1002
Stratigraphy; biogeography; Cenozoic; Deep Sea Drilling Project; DSDP Site 586; DSDP Site 587; DSDP Site 588; DSDP Site 590; Foraminifera; Globigerina; Globigerina bulloides; Globigerinacea; Globigerinidae; Globigerinoides; Globoconella; Holocene; Invertebrata; IPOD; Leg 89; Leg 90; marine environment; Menardella; microfossils; Neogene; Neogloboquadrina; Neogloboquadrina pachyderma; ocean circulation; Pacific Ocean; paleo-oceanography; paleoclimatology; paleoenvironment; planktonic taxa; Pleistocene; Pliocene; Protista; Quaternary; Rotaliina; South Pacific; Southwest Pacific; Tertiary; upper Pliocene; West Pacific;
.