# Atlantic Ocean Core Top Trace Element and Stable Isotope Data #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # # Online_Resource: http://hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:::::P1_STUDY_ID:16400 # # Original_Source_URL: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013crass.txt # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Paleoceanography #-------------------- # Contribution_Date # Date: 2014-04-23 #-------------------- # Title # Study_Name: Atlantic Ocean Core Top Trace Element and Stable Isotope Data #-------------------- # Investigators # Investigators: Cléroux, C.; deMenocal, P.; Arbuszewski, J.; Linsley, B. #-------------------- # Description_and_Notes # Description: 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). #-------------------- # Publication # Authors: Caroline Cléroux, Peter deMenocal, Jennifer Arbuszewski, and Brad Linsley # Published_Date_or_Year: 2013-09-16 # Published_Title: Reconstructing the upper water column thermal structure in the Atlantic Ocean # Journal_Name: Paleoceanography # Volume: 28 # Edition: # Issue: 3 # Pages: 503-516 # DOI: 10.1002/palo.20050 # Online_Resource: http://onlinelibrary.wiley.com/doi/10.1002/palo.20050/abstract # Full_Citation: # Abstract: 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. #------------------ # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: OCE-0927247 and OCE-07-52649 #------------------ # Site_Information # Site_Name: Mid-Atlantic Meridional Transect # Location: Ocean>Atlantic Ocean # Country: # Northernmost_Latitude: 42.0 # Southernmost_Latitude: -25.0 # Easternmost_Longitude: -5.0 # Westernmost_Longitude: -50.0 # Elevation: m #------------------ # Data_Collection # Collection_Name: Cleroux2013crass # Earliest_Year: 1000 # Most_Recent_Year: 0 # Time_Unit: Cal. Year BP # Core_Length: m # Notes: #------------------ # Chronology: # # # #---------------- # Variables # # Data variables follow that are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ##core core name, , , , , , , ,C ##lat latitude, , , degrees, , , , ,N ##long longitude, , , degrees, , , , ,N ##water-depth water depth, , , m, , , , ,N ##species species, , , , , , , ,C ##size size fraction, , , , , , , ,N ##Fe/Ca Iron/Calcium ratio, , , , , , , ,N ##Mg/Ca Magnesium/Calcium ratio, , , , , , , ,N ##Mn/Ca Manganese/Calcium ratio, , , , , , , ,N ##Sr/Ca Strontium/Calcium ratio, , , , , , , ,N ##d13CPDB delta13C, , , per mil PDB, , , , ,N ##d18OPDB delta18O, , , per mil PDB, , , , ,N # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # core lat long water-depth species size Fe/Ca Mg/Ca Mn/Ca Sr/Ca d13CPDB d18OPDB VM27-161 33.583 -13.967 4446 G. crassaformis sinistral 355-425 0.907 1.681 VM27-161 33.583 -13.967 4446 G. crassaformis sinistral 355-425 0.876 1.639 V27-261 31.37 -35.983 3253 G. crassaformis sinistral 355-425 -0.04 1.80 1.40 V22-219 27.92 -43.63 2582 G. crassaformis sinistral 355-425 0.01 1.98 1.37 VM10-93 24.200 -47.467 3574 G. crassaformis sinistral 355-425 0.785 1.541 VM10-93 24.200 -47.467 3574 G. crassaformis sinistral 355-425 0.962 1.553 VM16-206 23.333 -46.483 3733 G. crassaformis sinistral 355-425 1.004 2.219 VM16-206 23.333 -46.483 3733 G. crassaformis sinistral 355-425 0.701 1.808 V14-2 20.717 -49.433 4171 G. crassaformis sinistral 355-425 1.373 2.396 VM16-20 17.93 -50.35 4539 G. crassaformis sinistral 355-425 -0.08 1.52 0.02 1.31 1.115 1.797 VM16-20 17.93 -50.35 4539 G. crassaformis sinistral 355-425 1.084 1.842 VM16-021 17.270 -48.420 3975 G. crassaformis sinistral 355-425 1.169 2.592 VM16-021 17.270 -48.420 3975 G. crassaformis sinistral 355-425 0.795 2.565 V16-22 16.400 -45.767 3948 G. crassaformis sinistral 355-425 1.124 2.391 V16-205 15.4 -43.4 4043 G. crassaformis sinistral 355-425 0.00 1.35 0.10 1.47 1.198 2.235 V16-205 15.4 -43.4 4043 G. crassaformis sinistral 355-425 -0.01 1.35 0.11 1.41 1.206 2.505 VM22-202 14.400 -21.150 4310 G. crassaformis sinistral 355-425 1.005 2.035 VM22-202 14.400 -21.150 4310 G. crassaformis sinistral 355-425 1.149 2.218 V25-44 11.5 -45.15 4049 G. crassaformis sinistral 355-425 -0.01 1.16 0.02 1.34 1.176 2.269 V25-44 11.5 -45.15 4049 G. crassaformis sinistral 355-425 0.05 1.09 0.03 1.26 1.058 2.561 V32-67 11.283 -42.5 4082 G. crassaformis sinistral 355-425 -0.01 1.14 0.01 1.40 1.103 2.120 V32-67 11.283 -42.5 4082 G. crassaformis sinistral 355-425 0.01 1.24 0.02 1.40 1.261 2.504 V16-203 9.35 -39.867 4158 G. crassaformis sinistral 355-425 0.05 1.27 0.07 1.42 1.179 2.114 V16-203 9.35 -39.867 4158 G. crassaformis sinistral 355-425 0.04 1.32 0.07 1.37 1.224 2.475 V20-234 5.32 -33.03 3133 G. crassaformis sinistral 355-425 0.04 1.39 0.00 1.45 1.284 2.061 V20-234 5.32 -33.03 3133 G. crassaformis sinistral 355-425 0.02 1.40 0.00 1.46 1.431 2.020 V25-60 3.3 -34.8 3750 G. crassaformis sinistral 355-425 0.10 1.40 0.03 1.32 1.107 2.273 V25-60 3.3 -34.8 3750 G. crassaformis sinistral 355-425 0.05 1.19 0.04 1.33 1.050 2.252 V22-30 3.25 -34.25 3529 G. crassaformis sinistral 355-425 0.02 1.22 0.00 1.40 V22-30 3.25 -34.25 3529 G. crassaformis sinistral 355-425 0.04 1.17 0.01 1.42 V20-233 2.01 -35.93 3884 G. crassaformis sinistral 355-425 0.02 1.17 0.02 1.39 1.252 2.147 V20-233 2.01 -35.93 3884 G. crassaformis sinistral 355-425 0.01 1.15 0.02 1.38 1.307 2.237 RC13-189 1.85 -30 3233 G. crassaformis sinistral 355-425 0.03 1.52 0.02 1.48 1.377 1.863 RC13-189 1.85 -30 3233 G. crassaformis sinistral 355-425 0.02 1.64 0.02 1.56 1.141 1.895 V22-31 1.85 -32.467 3436 G. crassaformis sinistral 355-425 0.00 1.35 0.03 1.42 1.478 2.403 RC13-188 1.8 -33.7 3450 G. crassaformis sinistral 355-425 0.02 1.29 0.02 1.39 1.263 2.350 RC13-188 1.8 -33.7 3450 G. crassaformis sinistral 355-425 -0.01 1.28 0.02 1.38 1.328 1.915 RC13-190 1.780 -25.430 3797 G. crassaformis sinistral 355-425 1.241 1.943 V25-59 1.37 -33.48 3824 G. crassaformis sinistral 355-425 0.00 1.29 0.01 1.41 1.352 2.219 V25-59 1.37 -33.48 3824 G. crassaformis sinistral 355-425 0.12 1.39 0.02 1.44 1.232 2.315 V22-32 0.9 -31.8 3000 G. crassaformis sinistral 355-425 0.00 1.38 0.03 1.44 1.283 2.214 V22-32 0.9 -31.8 3000 G. crassaformis sinistral 355-425 0.01 1.33 0.03 1.44 1.451 2.287 V14-5 0.85 -32.85 3255 G. crassaformis sinistral 355-425 0.03 1.40 0.01 1.36 1.198 2.048 V14-5 0.85 -32.85 3255 G. crassaformis sinistral 355-425 0.02 1.25 0.02 1.40 1.418 2.185 RC24-01 0.55 -13.65 3837 G. crassaformis sinistral 355-425 0.08 1.41 0.01 1.22 1.092 1.985 RC24-01 0.55 -13.65 3837 G. crassaformis sinistral 355-425 0.04 1.19 0.01 1.26 1.165 2.065 V30-41 0.22 -23.07 3874 G. crassaformis sinistral 355-425 0.05 1.43 0.04 1.36 1.145 2.281 V30-41 0.22 -23.07 3874 G. crassaformis sinistral 355-425 0.05 1.27 0.04 1.36 1.275 2.127 VM25-050 0.200 -42.770 3749 G. crassaformis sinistral 355-425 1.528 2.214 VM25-050 0.200 -42.770 3749 G. crassaformis sinistral 355-425 1.385 2.130 V27-181 0.067 -25.48 3601 G. crassaformis sinistral 355-425 -0.01 1.29 0.01 1.37 1.356 2.098 V27-181 0.067 -25.48 3601 G. crassaformis sinistral 355-425 1.298 1.829 V30-40 -0.2 -23.15 3706 G. crassaformis sinistral 355-425 0.01 1.37 0.01 1.35 1.027 1.736 V30-40 -0.2 -23.15 3706 G. crassaformis sinistral 355-425 0.54 1.57 0.02 1.31 1.288 2.170 V26-102 -0.383 -39.133 4301 G. crassaformis sinistral 355-425 0.10 1.12 0.04 1.17 1.486 2.245 V26-102 -0.383 -39.133 4301 G. crassaformis sinistral 355-425 1.476 2.378 V22-182 -0.533 -17.27 3776 G. crassaformis sinistral 355-425 -0.06 1.39 -0.01 1.30 1.034 2.020 V22-182 -0.533 -17.27 3776 G. crassaformis sinistral 355-425 0.06 1.39 0.01 1.28 1.021 1.789 RC24-07 -1.34 -11.9 3899 G. crassaformis sinistral 355-425 0.06 1.08 0.01 1.23 1.065 2.312 RC24-07 -1.34 -11.9 3899 G. crassaformis sinistral 355-425 0.04 1.03 0.01 1.18 V20-230 -1.950 -39.033 3294 G. crassaformis sinistral 355-425 1.484 1.955 V20-230 -1.950 -39.033 3294 G. crassaformis sinistral 355-425 1.380 1.843 RC24-11 -2.18 -11.25 3445 G. crassaformis sinistral 355-425 0.07 1.21 0.03 1.27 1.131 1.771 RC24-11 -2.18 -11.25 3445 G. crassaformis sinistral 355-425 0.02 1.15 0.02 1.28 RC24-13 -3.73 -10.88 3921 G. crassaformis sinistral 355-425 -0.03 1.16 0.03 1.30 1.124 2.253 RC24-15 -4.1 -10.87 3504 G. crassaformis sinistral 355-425 -0.05 1.03 -0.01 1.19 1.153 2.071 RC24-15 -4.1 -10.87 3504 G. crassaformis sinistral 355-425 -0.06 1.24 -0.01 1.23 1.202 2.060 V22-179 -4.88 -15.73 3576 G. crassaformis sinistral 355-425 0.06 1.48 0.03 1.31 1.264 2.477 V22-179 -4.88 -15.73 3576 G. crassaformis sinistral 355-425 0.08 1.34 0.02 1.29 1.150 2.085 RC24-16 -5.03 -10.18 3559 G. crassaformis sinistral 355-425 0.05 1.18 0.01 1.21 1.100 2.034 RC24-16 -5.03 -10.18 3559 G. crassaformis sinistral 355-425 0.01 1.26 0.01 1.26 1.156 2.501 RC24-17 -5.05 -10.18 3559 G. crassaformis sinistral 355-425 0.02 1.12 0.00 1.23 1.150 2.134 RC24-17 -5.05 -10.18 3559 G. crassaformis sinistral 355-425 0.06 1.36 0.00 1.18 1.181 2.209 RC24-19 -7.017 -10 3581 G. crassaformis sinistral 355-425 0.60 1.26 0.02 1.22 1.010 2.395 RC24-19 -7.017 -10 3581 G. crassaformis sinistral 355-425 0.01 1.29 0.01 1.26 1.200 2.286 RC24-21 -8.183 -10.117 3718 G. crassaformis sinistral 355-425 0.02 1.43 0.01 1.24 1.064 2.474 RC24-21 -8.183 -10.117 3718 G. crassaformis sinistral 355-425 0.04 1.32 0.01 1.25 V22-175 -8.767 -14.28 2950 G. crassaformis sinistral 355-425 -0.04 1.55 0.02 1.35 1.269 2.180 V22-175 -8.767 -14.28 2950 G. crassaformis sinistral 355-425 -0.02 1.44 0.02 1.33 1.163 1.933 RC13-210 -9.13 -10.6 3658 G. crassaformis sinistral 355-425 0.08 1.48 0.02 1.28 0.596 2.667 RC13-210 -9.13 -10.6 3658 G. crassaformis sinistral 355-425 0.872 2.647 V22-174 -10.067 -12.817 2630 G. crassaformis sinistral 355-425 -0.02 1.43 0.02 1.30 1.033 2.499 V22-174 -10.067 -12.817 2630 G. crassaformis sinistral 355-425 -0.01 1.48 0.03 1.30 0.906 2.755 INMD111 -12.642 -13.847 3069 G. crassaformis sinistral 355-425 0.05 1.59 0.02 1.25 0.915 1.846 INMD111 -12.642 -13.847 3069 G. crassaformis sinistral 355-425 0.07 1.77 0.03 1.27 1.091 2.124 RC16-77 -12.7 -13.4 3400 G. crassaformis sinistral 355-425 0.01 1.41 0.01 1.23 0.991 2.675 RC16-77 -12.7 -13.4 3400 G. crassaformis sinistral 355-425 0.07 1.45 0.02 1.25 1.250 3.009 INMD113 -15.26 -14.96 3471 G. crassaformis sinistral 355-425 0.08 1.68 0.04 1.26 1.123 1.864 INMD113 -15.26 -14.96 3471 G. crassaformis sinistral 355-425 1.145 1.967 V22-169 -16.25 -5.733 3499 G. crassaformis sinistral 355-425 0.08 1.66 0.03 1.38 V22-169 -16.25 -5.733 3499 G. crassaformis sinistral 355-425 0.06 1.52 0.03 1.37 INMD115 -17.638 -16.212 3427 G. crassaformis sinistral 355-425 0.07 1.46 0.03 1.22 1.330 1.683 INMD115 -17.638 -16.212 3427 G. crassaformis sinistral 355-425 0.07 1.50 0.04 1.26 V16-35 -17.65 -15.1 3891 G. crassaformis sinistral 355-425 0.05 1.42 0.03 1.28 1.260 1.829 V16-35 -17.65 -15.1 3891 G. crassaformis sinistral 355-425 1.199 1.934 V16-36 -19.37 -11.43 3329 G. crassaformis sinistral 355-425 0.05 1.33 0.08 1.33 V16-37 -21.33 -8.95 3908 G. crassaformis sinistral 355-425 0.10 1.71 0.04 1.31 1.331 1.919 V16-37 -21.33 -8.95 3908 G. crassaformis sinistral 355-425 0.06 1.67 0.03 1.35 1.337 1.653 RC8-18 -24.07 -15.12 3977 G. crassaformis sinistral 355-425 0.14 1.60 0.02 1.32 1.471 2.152 RC8-18 -24.07 -15.12 3977 G. crassaformis sinistral 355-425 1.750 2.202 RC8-19 -24.300 -14.700 3640 G. crassaformis sinistral 355-425 1.136 2.355 RC8-19 -24.300 -14.700 3640 G. crassaformis sinistral 355-425 1.338 2.423