Carbon isotopes across the Eocene-Oligocene boundary sequence of Kutch, western India: Implications to oceanic productivity and pCO2 change

Details Carbon isotopes across the Eocene-Oligocene boundary sequence of Kutch, western India: Implications to oceanic productivity and pCO2 change Carbon isotopes across the Eocene-Oligocene boundary sequence of Kutch, western India: Implications to oceanic productivity and pCO2 change

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30k..42s&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 11, pp. 42-1, CiteID 1588, DOI 10.1029/2002GL016541

Mathematics

Logic

3

Geochemistry: Isotopic Composition/Chemistry, Geochemistry: Geochemical Cycles (0330), Oceanography: General: Paleoceanography, Oceanography: Biological And Chemical: Carbon Cycling, Oceanography: Biological And Chemical: Biogeochemical Cycles (1615)

Scientific paper

Analyses of foraminiferal δ18O (δ18Ocarb), δ13C (δ13Ccarb) and bulk organic matter (δ13Corg) across a tropical Eocene/Oligocene boundary (EOB) section from Kutch basin, western India show that the ocean cooling (at least ~3°C) is coincident with a rapid enrichment (~3‰) in δ13Corg but depletion (~1.5‰) in δ13Ccarb. The decrease in pCO2 in ocean-atmosphere system across the boundary, possibly resulting from enhanced silicate weathering in rising Himalayas and accompanied organic carbon burial in ocean, caused the cooling and δ13Corg enrichment. The end-Eocene climatic stress decreased the oceanic productivity (and δ13Ccarb) eventually causing extinction of larger benthic foraminiferal community. The data suggest a critical role of tropical ocean and direct forcing of CO2 on global climate change at least for this crucial Cenozoic transition.

Affiliated with

Also associated with

No associations

Rating

Carbon isotopes across the Eocene-Oligocene boundary sequence of Kutch, western India: Implications to oceanic productivity and pCO2 change does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Carbon isotopes across the Eocene-Oligocene boundary sequence of Kutch, western India: Implications to oceanic productivity and pCO2 change, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carbon isotopes across the Eocene-Oligocene boundary sequence of Kutch, western India: Implications to oceanic productivity and pCO2 change will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1822134