Tian Jun et al. (2004): Responses of foraminiferal isotopic variations at ODP Site 1143 in the southern South China Sea to orbital forcing

Leg/Site/Hole:
ODP 184
ODP 184 1143
Identifier:
2009-038765
georefid
Creator:
Tian Jun
Tongji University, Laboratory of Marine Geology, Shanghai, China
author
Wang Pinxian
author
Cheng Xinrong
author
Identification:
Responses of foraminiferal isotopic variations at ODP Site 1143 in the southern South China Sea to orbital forcing
2004
Science in China. Series D, Earth Sciences
Science in China Press, Beijing, China
47
10
943-953
Foraminiferal delta (super 18) O and delta (super 13) C records for the past 5 Ma at ODP Site 1143 reveal the linear responses of Plio-Pleistocene climate changes in the southern South China Sea to orbital forcing at the obliquity and precession bands. The phase of delta (super 18) O variations with orbital forcing is opposite that of delta (super 13) C, which may have been caused by the frequent El Nino events in the equatorial Pacific. The amplification of the Northern Hemisphere Ice Sheet at -3.3 Ma probably affected the development of the 100,000-year climate cycles. Its further spreading may have spurred the 100,000-year climate cycle to become the dominant cycle in the late Pleistocene. The "Mid-Pleistocene Transition" event had a localized influence on isotope variations in the southern South China Sea. Foraminiferal delta (super 13) C records for the past 5 Ma at Site 1143 are highly coherent with orbital forcing at the long eccentricity band, and lead delta (super 18) O records at the shorter eccentricity band, highlighting the importance of the carbon cycle in global climate change.
English
Serial
Coverage:Geographic coordinates:
North:9.2143
West:113.1707East: 113.1707
South:9.2143
Stratigraphy; Isotope geochemistry; C-13/C-12; carbon; carbon cycle; Cenozoic; climate change; climate forcing; Foraminifera; geochemical cycle; geochemical indicators; geochemistry; global change; ice sheets; Invertebrata; isotope ratios; isotopes; Leg 184; microfossils; Neogene; North Pacific; Northern Hemisphere; Northern Hemisphere ice sheet; Northwest Pacific; O-18/O-16; Ocean Drilling Program; ODP Site 1143; orbital forcing; oxygen; Pacific Ocean; paleo-oceanography; paleoclimatology; paleoecology; Pleistocene; Pliocene; Protista; Quaternary; South China Sea; stable isotopes; Tertiary; West Pacific;
.