Equatorial Pacific Coretop and Downcore Foraminifera Radiocarbon Data Mekik, F. Mekik, F. earth science/paleoclimate/paleoceanography (Delta 14C,Trilobatus sacculifer,null,per mil,null,paleoceanography,null,null,N,whole shells) earth science/paleoclimate/paleoceanography (age,null,one standard deviation,radiocarbon year before present,null,paleoceanography,null,null,N,Pulleniatina obliquiloculata whole shells) earth science/paleoclimate/paleoceanography (age,null,one standard deviation,radiocarbon year before present,null,paleoceanography,null,null,N,N. dutertrei whole shells) earth science/paleoclimate/paleoceanography (sample identification,null,null,null,null,paleoceanography,null,null,C,core name) earth science/paleoclimate/paleoceanography (Delta 14C,Globigerinoides ruber,null,per mil,null,paleoceanography,null,null,N,whole shells) earth science/paleoclimate/paleoceanography (Delta 14C,Globorotalia truncatulinoides,null,per mil,null,paleoceanography,null,null,N,whole shells) earth science/paleoclimate/paleoceanography (age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,Globorotalia menardii whole shells) earth science/paleoclimate/paleoceanography (age,null,one standard deviation,radiocarbon year before present,null,paleoceanography,null,null,N,Globorotalia menardii fragments) earth science/paleoclimate/paleoceanography (delta 13C,Globigerinoides ruber,null,per mil,null,paleoceanography,null,null,N,whole shells) earth science/paleoclimate/paleoceanography (delta 13C,Neogloboquadrina dutertrei,null,per mil,null,paleoceanography,null,null,N,whole shells) earth science/paleoclimate/paleoceanography (age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,Globorotalia truncatulinoides whole shells) earth science/paleoclimate/paleoceanography (age,null,one standard deviation,radiocarbon year before present,null,paleoceanography,null,null,N,Globigerinoides sacculifer whole shells) earth science/paleoclimate/paleoceanography (age,null,one standard deviation,radiocarbon year before present,null,paleoceanography,null,null,N,Globorotalia truncatulinoides whole shells) earth science/paleoclimate/paleoceanography (Delta 14C,Pulleniatina obliquiloculata,null,per mil,null,paleoceanography,null,null,N,whole shells) earth science/paleoclimate/paleoceanography (age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,pteropod fragments) earth science/paleoclimate/paleoceanography (age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,Globorotalia menardii fragments) earth science/paleoclimate/paleoceanography (delta 13C,Trilobatus sacculifer,null,per mil,null,paleoceanography,null,null,N,whole shells) earth science/paleoclimate/paleoceanography (delta 13C,Globorotalia menardii,null,per mil,null,paleoceanography,null,null,N,fragments) earth science/paleoclimate/paleoceanography (Delta 14C,Globorotalia menardii,null,per mil,null,paleoceanography,null,null,N,fragments) earth science/paleoclimate/paleoceanography (age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,Globigerinoides sacculifer whole shells) earth science/paleoclimate/paleoceanography (age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,Pulleniatina obliquiloculata whole shells) earth science/paleoclimate/paleoceanography (age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,Pulleniatina obliquiloculata fragments) earth science/paleoclimate/paleoceanography (age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,N. dutertrei whole shells) earth science/paleoclimate/paleoceanography (Delta 14C,Pulleniatina obliquiloculata,null,per mil,null,paleoceanography,null,null,N,fragments) earth science/paleoclimate/paleoceanography (age,null,one standard deviation,radiocarbon year before present,null,paleoceanography,null,null,N,pteropod fragments) earth science/paleoclimate/paleoceanography (age,null,one standard deviation,radiocarbon year before present,null,paleoceanography,null,null,N,Pulleniatina obliquiloculata fragments) earth science/paleoclimate/paleoceanography (delta 13C,Globorotalia menardii,null,per mil,null,paleoceanography,null,null,N,whole shells) earth science/paleoclimate/paleoceanography (Delta 14C,Globorotalia menardii,null,per mil,null,paleoceanography,null,null,N,whole shells) earth science/paleoclimate/paleoceanography (Delta 14C,gastropod,null,per mil,null,paleoceanography,null,null,N,pteropod fragments) earth science/paleoclimate/paleoceanography (age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,Globigerinoides ruber whole shells) earth science/paleoclimate/paleoceanography (delta 13C,Globorotalia truncatulinoides,null,per mil,null,paleoceanography,null,null,N,whole shells) earth science/paleoclimate/paleoceanography (delta 13C,Pulleniatina obliquiloculata,null,per mil,null,paleoceanography,null,null,N,whole shells) earth science/paleoclimate/paleoceanography (delta 13C,gastropod,null,per mil,null,paleoceanography,null,null,N,pteropod fragments) earth science/paleoclimate/paleoceanography (delta 13C,Pulleniatina obliquiloculata,null,per mil,null,paleoceanography,null,null,N,fragments) earth science/paleoclimate/paleoceanography (Delta 14C,Neogloboquadrina dutertrei,null,per mil,null,paleoceanography,null,null,N,whole shells) earth science/paleoclimate/paleoceanography (age,null,one standard deviation,radiocarbon year before present,null,paleoceanography,null,null,N,Globigerinoides ruber whole shells) earth science/paleoclimate/paleoceanography (age,null,one standard deviation,radiocarbon year before present,null,paleoceanography,null,null,N,Globorotalia menardii whole shells) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleocean (Equatorial Pacific>LATITUDE >LONGITUDE ) Sedimentation rate, bioturbation, winnowing, and calcite dissolution produce significant radiocarbon age offsets among multiple species of coexisting planktonic foraminifers and pteropod fragments. We compare the radiocarbon age of foraminifer species and pteropod fragments with estimates of percent calcite dissolved made with a sedimentary proxy (Globorotalia menardii fragmentation index-MFI) to delineate the effect of dissolution on radiocarbon age of foraminifers. Data from two core top transects on the Rio Grande Rise (RIO) and Ontong Java Plateau (OJP) and from down core sediments of varying sedimentation rates in the tropical Pacific (ME-27, MD98 2177, and MW91-9 56GGC) reveal that sediments with the greatest accumulation rates produce the least age offsets among coexisting species. Age offsets among coexisting foraminifers are about 3500 years on RIO, and 1000 years on OJP. Two core tops from RIO yield an age of the Last Glacial Maximum possibly due to mass displacement of younger sediments downslope. Foraminifer age increases with increasing dissolution and there is a consistent pattern of older foraminifer fragments coexisting with younger whole shells of the same species. The only exception is sediments which have experienced high dissolution where fragments are younger than whole shells. The age offset between fragments of G. menardii and its coexisting whole shells does not exceed the age offset among other coexisting foraminifer species in the same core tops. STUDY NOTES: Coretop and downcore foraminifera radiocarbon and d13C data from the Equatorial Pacific. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Mekik, F. 2017-05-26 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/22190 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mekik2014/mekik2014.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mekik2014/mekik2014.txt English https://www.ncdc.noaa.gov/paleo/study/22190 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mekik2014/mekik2014.txt Figen Mekik2014Radiocarbon dating of planktonic foraminifer shells: A cautionary talePaleoceanography29113-2910.1002/2013PA002532http://onlinelibrary.wiley.com/doi/10.1002/2013PA002532/full START YEAR: 22000 cal yr BP * END YEAR: 0 cal yr BP 159 -5 -80 5