Atlantic Ocean Core Top Trace Element and Stable Isotope Data Cléroux, C.; deMenocal, P.B.; Arbuszewski, J.A.; Linsley, B.K. Cléroux, C. deMenocal, P.B. Arbuszewski, J.A. Linsley, B.K. earth science/paleoclimate/paleoceanography (magnesium/calcium,Neogloboquadrina dutertrei,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (manganese/calcium,Globorotalia inflata,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (strontium/calcium,Globorotalia inflata,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,Globorotalia tumida,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (iron/calcium,Globorotalia crassaformis,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 18O,Neogloboquadrina dutertrei,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globorotalia inflata,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (manganese/calcium,Globorotalia truncatulinoides,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (strontium/calcium,Globorotalia tumida,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (latitude,null,null,degree,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (strontium/calcium,Neogloboquadrina dutertrei,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (manganese/calcium,Globorotalia hirsuta,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (iron/calcium,Globorotalia inflata,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (manganese/calcium,Globorotalia tumida,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,Globorotalia crassaformis,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (iron/calcium,Neogloboquadrina dutertrei,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,N,foraminiferal size fraction) earth science/paleoclimate/paleoceanography (delta 13C,Globorotalia hirsuta,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,Globorotalia truncatulinoides,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,C,core name) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,C,foraminifera taxon name) earth science/paleoclimate/paleoceanography (collection water depth,null,null,meter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (iron/calcium,Globorotalia hirsuta,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (strontium/calcium,Globorotalia hirsuta,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,Globorotalia inflata,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (iron/calcium,Globorotalia truncatulinoides,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globorotalia truncatulinoides,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 18O,Globorotalia truncatulinoides,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (iron/calcium,Globorotalia tumida,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 18O,Globorotalia hirsuta,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,C,foraminiferal size fraction) earth science/paleoclimate/paleoceanography (delta 18O,Globorotalia crassaformis,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,Neogloboquadrina dutertrei,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 18O,Globorotalia inflata,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (strontium/calcium,Globorotalia truncatulinoides,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (longitude,null,null,degree,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (manganese/calcium,Globorotalia crassaformis,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (manganese/calcium,Neogloboquadrina dutertrei,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globorotalia tumida,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globorotalia crassaformis,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (strontium/calcium,Globorotalia crassaformis,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globorotalia hirsuta,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 18O,Globorotalia tumida,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (Mid-Atlantic Meridional Transect>LATITUDE >LONGITUDE ) The thermal structure of the upper ocean (0-1000 m) is set by surface heat fluxes, shallow wind-driven circulation, and the deeper thermohaline circulation. Its long-term variability can be reconstructed using deep-dwelling planktonic foraminifera that record subsurface conditions. Here we used six species (Neogloboquadrina dutertrei, Globorotalia tumida, Globorotalia inflata, Globorotalia truncatulinoides, Globorotalia hirsuta, and Globorotalia crassaformis) from 66 core tops along a meridional transect spanning the mid-Atlantic (42°N to 25°S) to develop a method for reconstructing past thermocline conditions. We estimated the calcification depths from d18O measurements and the Mg/Ca-temperature relationships for each species. This systematic strategy over this large latitudinal section reveals distinct populations with different Mg/Ca-temperature relationships for G. inflata, G. truncatulinoides, and G. hirsuta in different areas. The calcification depths do not differ among the different populations, except for G. hirsuta, where the northern population calcifies much shallower than the southern population. N. dutertrei and G. tumida show a remarkably constant calcification depth independent of oceanographic conditions. The deepest dweller, G. crassaformis, apparently calcifies in the oxygen-depleted zone, where it may find refuge from predators and abundant aggregated matter to feed on. We found a good match between its calcification depth and the 3.2 ml/l oxygen level. The results of this multispecies, multiproxy study can now be applied down-core to facilitate the reconstruction of open-ocean thermocline changes in the past. STUDY NOTES: Trace element ratios (Mg, Sr, Mn, Fe) and stable isotope (d18O, d13C) of 6 planktonic foraminifera species (G. dutertrei, G. tumida, G. truncatulinoides, G. inflata, G. crassaformis, G. hirsuta) from 66 coretops in the Atlantic Ocean. Coretops are located between 42°N and 25°S. For each coretop sample, 10 to 25 specimens were picked, gently crushed between two glass plates,mixed, and split into four aliquots: two replicates for trace element analysis (ICP-OES) and two replicates for stable isotope analysis (Optima mass spectrometer). NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Cléroux, C. Investigator : deMenocal, P.B. Investigator : Arbuszewski, J.A. Investigator : Linsley, B.K. 2014-04-23 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/16400 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013crass.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013trunc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013duter.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013hirsuta.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013inflata.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013tumida.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013crass.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013trunc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013duter.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013hirsuta.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013inflata.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013tumida.txt English https://www.ncdc.noaa.gov/paleo/study/16400 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013crass.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013trunc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013duter.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013hirsuta.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013inflata.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013tumida.txt Caroline Cléroux, Peter deMenocal, Jennifer Arbuszewski, and Brad Linsley2013Reconstructing the upper water column thermal structure in the Atlantic OceanPaleoceanography283503-51610.1002/palo.20050http://onlinelibrary.wiley.com/doi/10.1002/palo.20050/abstract START YEAR: 1000 cal yr BP * END YEAR: 0 cal yr BP -50 -25 -5 42