Late Miocene Carbon Isotope and Paleoproductivity Data Diester-Haass, L.; Billups, K.; Emeis, K.C. Diester-Haass, L. Billups, K. Emeis, K.C. earth science/paleoclimate/paleoceanography (calcium carbonate,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,accum. rate) earth science/paleoclimate/paleoceanography (delta 13C,Cibicidoides sp.,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (aluminum,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,Al mass accum. rate) earth science/paleoclimate/paleoceanography (delta 13C,Cibicidoides wuellerstorfi,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified foraminifer,null,null,percent,null,paleoceanography,null,null,N,Uvigerina sp.) earth science/paleoclimate/paleoceanography (delta 13C,Cibicidoides mundula,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (barium/aluminum,sediment,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (total radiolarians,sediment,null,percent,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 (identified foraminifer,null,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleoceanography (productivity,null,null,gram per square centimeter per kiloyear,null,climate reconstructions|paleoceanography,null,null,N,grams of carbon per cm2 per kyr; based on benthic foram accumulation rate) earth science/paleoclimate/paleoceanography (calcium carbonate,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (titanium,sediment,null,percent,null,paleoceanography,null,x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleoceanography (sedimentation rate,null,null,centimeter per kiloyear,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (total radiolarians,null,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (aluminum,sediment,null,percent,null,paleoceanography,null,x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleoceanography (phosphorus/aluminum,sediment,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (ODP 846B/D>LATITUDE -3.1>LONGITUDE -90.82) (ODP1172>LATITUDE -43.959757>LONGITUDE 149.928268) (ODP721B>LATITUDE 16.68>LONGITUDE 59.87) (ODP1146A>LATITUDE 19.45>LONGITUDE 116.27) We examine whether or not a relationship exists between the late Miocene carbon isotope shift (~7.6ŋ6.6 Ma) and marine productivity at four sites from the Indian and Pacific Oceans (Ocean Drilling Program Sites 721, 1146, 1172, and 846). We use a multiproxy approach based on benthic foraminiferal accumulation rates, elemental ratios, and dissolution indices, and we compare these data to benthic foraminiferal d13C values measured on the same samples. Although some of these sites have been targeted previously in studies of either the late Miocene/early Pliocene ŋbiogenic bloomŋ (Sites 721 and 846) or the late Miocene carbon isotope shift (Site 1172), our records are the first to establish paired proxy records of carbon isotopes and paleoproductivity allowing a direct assessment of a potential link. Our results indicate that at all sites, productivity increased sometime during the d13C shift; at three sites (721, 1146, and 846), productivity increased at the beginning of the shift. The correlation coefficients derived from linear regression between micropaleontologically derived productivity and foraminiferal d13C values are relatively high during the time interval containing the late Miocene d13C shift (and statistically significant at three of the sites). Carbon flux and isotope mass balance considerations illustrate that transfer of organic matter between the terrestrial and marine reservoirs together with enhanced oceanic upwelling best approximates observed changes in carbon isotope records and paleoproductivity. We note that long-term trend in the Site 846 paleoproductivity record can be correlated to the long-term trend in the Site 848 eolian flux reconstructions of Hovan (1995) hinting at a link between strengthened wind regime and productivity during the late Miocene. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Diester-Haass, L. Investigator : Billups, K. Investigator : Emeis, K.C. 2006-07-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/5588 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp721b-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp846bd-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1146a-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1172-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/diester-haass2006 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp721b-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp846bd-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1146a-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1172-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/diester-haass2006 English https://www.ncdc.noaa.gov/paleo/study/5588 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp721b-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp846bd-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1146a-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1172-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/diester-haass2006 Diester-Haass, L., K. Billups, and K.C. Emeis. 2006. Late Miocene carbon isotope records and marine biological productivity: Was there a (dusty) link? Paleoceanography, 21, PA4216. START YEAR: 8742000 14C yr BP * END YEAR: 3049000 14C yr BP -90.82 -43.959757 149.928268 19.45