Ibaraki, Masako (2002): Responses of planktonic Foraminifera to the emergence of the Isthmus of Panama. Universidad Nacional Autonoma de Mexico, Instituto de Geologia, Coyoacan, Mexico, In: Tsuchi, Ryuichi (editor), Barron, John A. (editor), Molina-Cruz, Adolfo (editor), Pacific Neogene event studies for the 21st century; proceedings of the VII international congress on Pacific Neogene stratigraphy, 19 (3), 152-160, georefid:2003-070475

Abstract:
Pliocene-Pleistocene planktonic foraminiferal assemblages of the Esmeraldas section in northwestern Ecuador and of Hole 1039B off Costa Rica are analyzed. In the Esmeraldas section, an abrupt cooling of the sea-water temperature is recognized between 3.35 and 3.95 Ma, in which Neogloboquadrina spp. and intermediate water dwellers increase in abundance. In the section off Costa Rica, the sea-water temperature declined just before 4.2 Ma, when planktonic foraminifera become absent, but increased afterwards as evidenced by abundant occurrences in Zone N22 to the Recent. These faunal changes are considered to be responses to the emergence of the Isthmus of Panama.
Coverage:
West: -83.0000 East: -76.0000 North: 10.0000 South: -3.0000
Relations:
Expedition: 170
Site: 170-1039
Data access:
Provider: SEDIS Publication Catalogue
Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=2003-070475 (c.f. for more detailed metadata)
This metadata in ISO19139 XML format