Microfossil faunas of the late Miocene-Quaternary in DSDP Site 451, West Pacific, and their paleoceanographic implications

Author(s): Zhao Quanhong
Author Affiliation(s): Primary:
Tongji University, Laboratory of Marine Geology, Shanghai, China
Volume Title: Haiyang Dizhi yu Disiji Dizhi Marine Geology & Quaternary Geology
Source: Haiyang Dizhi yu Disiji Dizhi = Marine Geology & Quaternary Geology, 20(2), p.51-56. Publisher: Ministry of Geology and Mineral Resources, Marine Geology Institute and Quaternary Geology Research Center, Qingdao, China. ISSN: 0256-1492
Note: In Chinese with English summary. 21 refs.; illus.
Summary: Microfossil and benthic Foraminifera isotopic data from DSDP Site 451 record paleoceanographic evolution and its major events since the late Miocene. Ostracod turnover from the Cytheropteron assemblage of the late Miocene-early Pliocene to a continuing increase in Krithe abundance probably indicates a deepening of some 1000 m water depth and a change in water properties from Intermediate Water to Deep Water, which may have been a result of the continuing subsidence of the West Mariana Ridge since the late Miocene. An abrupt 0.9% decrease in the δ 13C of benthic foraminifera Cibicidoides wuellerstorfi during the period of late NN11 to NN12 represents the latest Miocene carbon shift in the West Pacific that has been documented globally.
Year of Publication: 2000
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Arthropoda; Benthic taxa; Biostratigraphy; C-13/C-12; Carbon; Cenozoic; Correlation; Crustacea; DSDP Site 451; Deep Sea Drilling Project; Foraminifera; IPOD; Invertebrata; Isotope ratios; Isotopes; Leg 59; Mandibulata; Microfossils; Miocene; Neogene; Ostracoda; Pacific Ocean; Paleo-oceanography; Paleoecology; Pliocene; Protista; Quaternary; Stable isotopes; Tertiary; Upper Miocene; West Pacific
Coordinates: N180053 N180053 E1431634 E1431634
Record ID: 2003013575
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data supplied by National Geological Library, Beijing, China