South China Sea ODP1146 AIM 24-25 Foraminiferal Stable Isotope Data Caballero-Gill, R.P.; Clemens, S.C.; Prell, W.L. Caballero-Gill, R.P. Clemens, S.C. Prell, W.L. earth science/paleoclimate/paleoceanography (depth,null,null,meter,null,paleoceanography,composited,null,N,null) earth science/paleoclimate/paleoceanography (delta 18O,Globigerinoides ruber,null,per mil VPDB,null,paleoceanography,null,null,N,212-355 mm) earth science/paleoclimate/paleoceanography (delta 13C,Uvigerina peregrina,null,per mil VPDB,null,paleoceanography,null,null,N,212-355 mm) earth science/paleoclimate/paleoceanography (age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,Globigerinoides ruber,null,per mil VPDB,null,paleoceanography,null,null,N,212-355 mm) earth science/paleoclimate/paleoceanography (delta 18O,Uvigerina peregrina,null,per mil VPDB,null,paleoceanography,null,null,N,212-355 mm) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (depth,null,null,meter,null,paleoceanography,null,null,N,mbsf) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (ODP1146>LATITUDE 19.45>LONGITUDE 116.27) High-resolution planktic and benthic d18O records at Site 1146 (northern South China Sea) include structure within Marine Isotope Stage 5.4, 118.5-105.9 ka, that is not captured in stacked d18O records commonly used for age model construction and as proxies for global ice volume. Leveraging a common monsoonal influence, Site 1146 planktic d18O was aligned to speleothem d18O from southeastern China to derive a radiometrically calibrated (RC) age model. On the RC age model, the benthic d18O record contains structure equivalent in time to Antarctic Isotope Maximum (AIM) events 24 and 25. Sea level reconstructions for isotopic event 5.4 suggest that these benthic d18O events (AIM 24 and 25) derive from isotopic change (ice volume) although some temperature change cannot be completely excluded. STUDY NOTES: Foraminiferal stable isotope data (d18O and d13C) from core ODP1146 in the South China Sea for the interval 150 - 50 KYrBP. Antarctic Isotope Maximum (AIM) events 24 and 25 observed in the benthic marine record suggest changes in ice volume during Marine Isotope Stage (MIS) 5.4. Ocean Drilling Program Site 1146: 19°27'N, 116°16'E, 2092m depth NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Caballero-Gill, R.P. Investigator : Clemens, S.C. Investigator : Prell, W.L. 2012-04-18 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/12900 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/caballero-gill2012/caballero-gill2012.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/caballero-gill2012/caballero-gill2012.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/caballero-gill2012/caballero-gill2012.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/caballero-gill2012/caballero-gill2012.xls English https://www.ncdc.noaa.gov/paleo/study/12900 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/caballero-gill2012/caballero-gill2012.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/caballero-gill2012/caballero-gill2012.xls Caballero-Gill, R.P., S. Clemens, and W. Prell. 2012. Antarctic Isotope Maxima events 24 and 25 identified in benthic marine d18O. Paleoceanography, 27, PA1101, doi:10.1029/2011PA002269 START YEAR: 149378 cal yr BP * END YEAR: 50496 cal yr BP 116.27 19.45 116.27 19.45