Planktic foraminiferal biogeography and ocean circulation in Southwest Pacific during last 3.3. My

Author(s): Srinivasan, M. S.; Sinha, Devesh K.
Author Affiliation(s): Primary:
Banaras Hindu University, Department of Geology, Varanasi, India
Volume Title: Recent developments in Indian micropaleontology
Volume Author(s): Kundal, Pradeep, editor
Source: Gondwana Geological Magazine, Vol.(Special volume 6), p.23-31; XVIII Indian colloquium on Micropaleontology and stratigraphy, Nagpur, India, Jan. 14-16. 2002, edited by Pradeep Kundal. Publisher: Gondwana Geological Society, Nagpur, India. ISSN: 0970-261X
Note: In English. 34 refs.; illus., incl. 1 table, sketch map
Summary: 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.
Year of Publication: 2003
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Biogeography; Cenozoic; DSDP Site 586; DSDP Site 587; DSDP Site 588; DSDP Site 590; Deep Sea Drilling Project; Foraminifera; Globigerina; Globigerina bulloides; Globigerinacea; Globigerinidae; Globigerinoides; Globoconella; Holocene; IPOD; Invertebrata; 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
Coordinates: S002951 S002950 E1582954 E1582953
S211153 S211152 E1612000 E1611959
S260642 S260642 E1611336 E1611336
S311002 S311001 E1632131 E1632130
Record ID: 2006001162
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