Sato, Tokiyuki; Chiyonobu, Shun (2009): Cenozoic paleoceanography indicated by size change of calcareous nannofossil and Discoaster abundance. Palaeontological Society of Japan, [Tokyo], Japan, Kaseki = Fossils, 86, 12-19, georefid:2012-083042

Abstract:
We discuss in detail the Cenozoic paleoceanograpy related to the sea surface stratification, nutrient, and sea surface temperature based on the relationship between the coccolith maximum size and Discoaster abundance. The positive correlation was recognized between these parameters in the sequence from Eocene to Pliocene. As Discoaster is likely a lower photic species as like Florisphaera profunda, abundant occurrence of Discoaster indicates the sea surface stratification and the oligotrophic condition. On the basis of the relationship between coccolith maximum size and Discoaster abundance found in the Cenozoic sequence of ODP sites 807 and 731, the intervals of the late Eocene, NN3 to NN4 zones in the early Miocene, and NN6 to NN9 zones in the middle Miocene, are interpreted as the oligotrophic conditions.
Coverage:
West: 59.4208 East: 156.3730 North: 16.2814 South: 3.3622
Relations:
Expedition: 117
Site: 117-731
Expedition: 130
Site: 130-807
Data access:
Provider: SEDIS Publication Catalogue
Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=2012-083042 (c.f. for more detailed metadata)
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