Atlantic Oligocene/Miocene Boundary Paleoproductivity Data Diester-Haass, L.; Billups, K.; Emeis, K.C. Diester-Haass, L. Billups, K. Emeis, K.C. earth science/paleoclimate/paleoceanography (density,dry sediment,null,gram per cubic centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (carbonate,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (depth,null,null,meter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (sand,sediment,null,percent,null,paleoceanography,null,null,N,> 63 um) earth science/paleoclimate/paleoceanography (total benthic foraminifers,null,null,count per square centimeter per kiloyear,null,paleoceanography,null,null,N,> 150 mm) earth science/paleoclimate/paleoceanography (identified foraminifer,sediment,null,count per gram,null,paleoceanography,null,null,N,Uvigerina sp.) earth science/paleoclimate/paleoceanography (delta 18O,Cibicidoides mundula,null,per mil,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (accumulation rate,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (foraminifer fragmentation,null,null,percent,null,paleoceanography,null,null,N,Fragmentation of planktic forams (fragm/fragm +whole test)*100)) earth science/paleoclimate/paleoceanography (carbonate,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified foraminifer,sediment,null,count per square centimeter per kiloyear,null,paleoceanography,null,null,N,Uvigerina sp.) earth science/paleoclimate/paleoceanography (organic carbon,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (organic carbon,sediment,null,milligram per square centimeter per kiloyear,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (total benthic foraminifers,null,null,count per gram,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,C,Site/Hole/Core/Section) earth science/paleoclimate/climate reconstructions|paleoceanography (productivity,null,null,gram per square centimeter per kiloyear,null,climate reconstructions|paleoceanography,null,null,N,units are grams carbon per square centimeter per kiloyear; reconstructed from benthic foram accumulation rates) earth science/paleoclimate/paleoceanography (depth at sample start,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (total benthic foraminifers,null,null,fraction,null,paleoceanography,null,null,N,benthic/(planktic plus benthic foraminifera)) earth science/paleoclimate/paleoceanography (age,null,null,million years ago,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (sedimentation rate,null,null,centimeter per kiloyear,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,Cibicidoides mundula,null,per mil,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (depth at sample end,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleocean (ODP 1265>LATITUDE -28.835017>LONGITUDE 2.639333) (ODP 1090>LATITUDE -42.908333>LONGITUDE 8.9) (ODP 926>LATITUDE 3.72>LONGITUDE -42.92) The Oligocene to Miocene boundary (23 Ma) marks one of the major Cenozoic cooling steps. A corresponding but slightly lagging d13C maximum in benthic foraminifer calcite of globally distributed sediment cores has been attributed to increased organic matter burial, either on land or in the oceans. To test this idea we reconstruct the organic carbon flux to the sea floor at three Atlantic Ocean Drilling Program (ODP) Sites using benthic foraminiferal accumulation rates (BFAR) and compare them with the stable isotope records. Our data show that the d18O and d13C maximum that characterizes the Oligocene/Miocene boundary is accompanied by a pronounced maximum in BFAR derived paleoproductivity at two of the sites. At tropical Atlantic Site 926 the paleoproductivity increase at the Oligocene/Miocene boundary is smaller than at the higher latitude sites, but high resolution sampling of a 2 million year interval (22-24 Ma) reveals that on eccentricity time scales productivity and stable isotope records are significantly correlated. The productivity records are in phase with the d18O and d13C records at the short-term (~125 ky) component of eccentricity. At the long-term eccentricity period (~400 ky) productivity is in phase with d18O but leads the d13C record by an amount that is consistent with published phase lags between the d18O and d13C records. These results imply that there was enhanced flux of organic matter to the ocean floor during the O/M climate transition and support that marine primary productivity may have played a role in the carbon cycle and atmospheric CO2 draw-down at this time. STUDY NOTES: Atlantic Ocean paleoproductivity data from 3 cores for a 5 million year interval (20-25Ma) across the Oligocene-Miocene Boundary. Data include accumulation rates, planktic/benthic foraminifer ratios, carbonate and organic carbon content, benthic foraminiferal numbers per unit of time, stable isotopes, and geochemistry, interpreted in terms of orbital control of productivity variations. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Diester-Haass, L. Investigator : Billups, K. Investigator : Emeis, K.C. 2011-04-20 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/10868 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/diester-haass2011/diester-haass2011.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/diester-haass2011/diester-haass2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/diester-haass2011/diester-haass2011.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/diester-haass2011/diester-haass2011.txt English https://www.ncdc.noaa.gov/paleo/study/10868 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/diester-haass2011/diester-haass2011.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/diester-haass2011/diester-haass2011.txt Diester-Haass, L., K. Billups, and K. Emeis. 2011. Enhanced paleoproductivity across the Oligocene/Miocene boundary as evidenced by benthic foraminiferal accumulation rates. Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 302, Issues 3-4, 15 March 2011, pp. 464-473. doi:10.1016/j.palaeo.2011.02.006 START YEAR: 25702000 cal yr BP * END YEAR: 19680000 cal yr BP -42.92 -42.908333 8.9 3.72