# 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/cleroux2013duter.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: Cleroux2013duter # 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 VM27-267 35.633 -44.283 4722 N. dutertrei 355-425 1.299 0.290 VM27-267 35.633 -44.283 4722 N. dutertrei 355-425 1.569 0.319 V16-21 17.27 -48.42 3975 N. dutertrei 355-425 0.02 2.17 0.07 1.47 1.841 -0.190 V16-21 17.27 -48.42 3975 N. dutertrei 355-425 -0.03 1.99 0.06 1.48 2.085 0.590 V16-22 16.4 -45.767 3948 N. dutertrei 355-425 -0.05 2.35 0.01 1.45 2.054 -0.438 V16-22 16.4 -45.767 3948 N. dutertrei 355-425 -0.05 2.23 0.01 1.44 1.986 -0.447 V16-205 15.4 -43.4 4043 N. dutertrei 355-425 0.01 1.77 0.06 1.48 V16-205 15.4 -43.4 4043 N. dutertrei 355-425 0.01 1.71 0.06 1.48 VM22-202 14.400 -21.150 4310 N. dutertrei 355-425 1.924 0.789 VM22-202 14.400 -21.150 4310 N. dutertrei 355-425 1.916 0.797 V25-44 11.5 -45.15 4049 N. dutertrei 355-425 -0.02 1.61 0.02 1.36 1.999 -0.361 V25-44 11.5 -45.15 4049 N. dutertrei 355-425 0.01 1.45 0.02 1.38 2.098 0.441 V32-67 11.283 -42.5 4082 N. dutertrei 355-425 -0.01 1.59 0.01 1.43 1.878 -0.055 V32-67 11.283 -42.5 4082 N. dutertrei 355-425 0.00 1.84 0.01 1.42 2.032 0.119 V16-203 9.35 -39.867 4158 N. dutertrei 355-425 0.01 1.78 0.06 1.40 1.926 0.409 V16-203 9.35 -39.867 4158 N. dutertrei 355-425 0.02 1.86 0.06 1.45 V20-234 5.32 -33.03 3133 N. dutertrei 355-425 0.02 2.48 0.00 1.47 2.179 -0.075 V20-234 5.32 -33.03 3133 N. dutertrei 355-425 0.03 2.58 0.00 1.47 2.487 -0.079 V25-60 3.3 -34.8 3750 N. dutertrei 355-425 0.01 1.74 0.01 1.44 1.855 -0.092 V25-60 3.3 -34.8 3750 N. dutertrei 355-425 0.03 1.74 0.02 1.43 2.015 0.043 V22-30 3.25 -34.25 3529 N. dutertrei 355-425 0.05 2.00 0.00 1.45 1.770 0.146 V22-30 3.25 -34.25 3529 N. dutertrei 355-425 0.11 1.76 -0.01 1.41 2.145 0.536 V20-233 2.01 -35.93 3884 N. dutertrei 355-425 0.07 2.11 0.02 1.41 2.125 -0.693 V20-233 2.01 -35.93 3884 N. dutertrei 355-425 0.02 2.17 0.02 1.42 2.163 -0.340 RC13-189 1.85 -30 3233 N. dutertrei 355-425 0.00 2.18 0.01 1.41 2.109 -0.379 RC13-189 1.85 -30 3233 N. dutertrei 355-425 1.904 -0.497 V22-31 1.85 -32.467 3436 N. dutertrei 355-425 0.04 2.52 0.00 1.47 1.885 -0.165 V22-31 1.85 -32.467 3436 N. dutertrei 355-425 0.02 2.39 0.00 1.46 1.972 0.116 RC13-188 1.8 -33.7 3450 N. dutertrei 355-425 0.05 2.24 0.03 1.40 1.924 -0.488 RC13-188 1.8 -33.7 3450 N. dutertrei 355-425 0.04 2.40 0.03 1.42 2.121 -0.517 RC13-190 1.78 -25.43 3797 N. dutertrei 355-425 -0.01 1.79 0.02 1.45 1.981 0.724 V25-59 1.370 -33.480 3824 N. dutertrei 355-425 2.096 0.073 V25-59 1.370 -33.480 3824 N. dutertrei 355-425 2.041 -0.148 V22-32 0.9 -31.8 3000 N. dutertrei 355-425 0.02 2.14 0.03 1.44 2.041 -0.287 V22-32 0.9 -31.8 3000 N. dutertrei 355-425 0.04 1.95 0.04 1.39 2.191 -0.421 V14-5 0.85 -32.85 3255 N. dutertrei 355-425 0.02 2.44 0.01 1.43 1.949 -0.390 V14-5 0.85 -32.85 3255 N. dutertrei 355-425 0.02 2.33 0.02 1.45 1.981 -0.477 RC24-01 0.55 -13.65 3837 N. dutertrei 355-425 0.06 1.29 0.00 1.33 1.899 0.429 RC24-01 0.55 -13.65 3837 N. dutertrei 355-425 0.02 1.17 0.00 1.32 1.798 0.405 V30-41 0.22 -23.07 3874 N. dutertrei 355-425 0.30 1.85 0.03 1.36 2.003 -0.084 V30-41 0.22 -23.07 3874 N. dutertrei 355-425 0.04 1.77 0.04 1.43 1.975 -0.158 V25-50 0.2 -42.77 3749 N. dutertrei 355-425 0.01 2.45 0.02 1.47 2.052 -0.510 V25-50 0.2 -42.77 3749 N. dutertrei 355-425 0.03 2.38 0.03 1.46 1.965 -0.551 V27-181 0.067 -25.48 3601 N. dutertrei 355-425 0.04 1.87 0.01 1.40 2.140 -0.382 V27-181 0.067 -25.48 3601 N. dutertrei 355-425 0.01 1.87 0.01 1.42 1.953 -0.296 V30-40 -0.2 -23.15 3706 N. dutertei 355-425 0.02 1.73 0.01 1.33 1.929 -0.125 V30-40 -0.2 -23.15 3706 N. dutertei 355-425 0.04 1.76 0.01 1.36 V26-102 -0.383 -39.133 4301 N. dutertei 355-425 -0.01 1.71 0.02 1.36 2.040 0.245 V26-102 -0.383 -39.133 4301 N. dutertei 355-425 0.03 1.62 0.02 1.34 1.970 -0.038 V22-182 -0.533 -17.27 3776 N. dutertrei 355-425 -0.07 1.50 -0.01 1.36 1.850 0.175 V22-182 -0.533 -17.27 3776 N. dutertrei 355-425 0.00 1.68 0.00 1.32 1.764 0.521 RC24-07 -1.34 -11.9 3899 N. dutertrei 355-425 0.01 1.49 0.00 1.35 1.749 0.390 RC24-07 -1.34 -11.9 3899 N. dutertrei 355-425 0.47 1.49 0.01 1.30 1.926 0.212 V26-99 -1.467 -32.717 4632 N. dutertei 355-425 0.12 1.78 0.14 1.35 1.618 0.601 V26-99 -1.467 -32.717 4632 N. dutertei 355-425 1.549 0.841 V26-100 -1.55 -34.65 4308 N. dutertrei 355-425 0.05 2.01 0.04 1.36 1.954 0.284 V26-100 -1.55 -34.65 4308 N. dutertrei 355-425 0.01 2.00 0.04 1.38 2.146 0.149 V20-230 -1.95 -39.033 3294 N. dutertrei 355-425 0.03 2.54 0.00 1.37 2.044 -0.651 V20-230 -1.95 -39.033 3294 N. dutertrei 355-425 2.141 -0.811 RC24-11 -2.18 -11.25 3445 N. dutertrei 355-425 0.00 1.24 0.02 1.39 1.537 0.307 RC24-11 -2.18 -11.25 3445 N. dutertrei 355-425 0.01 1.34 0.02 1.40 1.572 0.323 RC24-13 -3.73 -10.88 3921 N. dutertrei 355-425 0.02 1.38 0.03 1.39 2.161 0.519 RC24-13 -3.73 -10.88 3921 N. dutertrei 355-425 0.14 1.61 0.04 1.36 1.934 0.220 R24-15 -4.1 -10.87 3504 N. dutertrei 355-425 -0.03 1.63 -0.01 1.29 1.943 0.225 R24-15 -4.1 -10.87 3504 N. dutertrei 355-425 -0.03 1.60 -0.01 1.30 2.046 0.293 V22-179 -4.88 -15.73 3576 N.dutertrei 355-425 0.03 1.96 0.03 1.44 1.815 0.322 V22-179 -4.88 -15.73 3576 N.dutertrei 355-425 1.950 0.593 RC24-16 -5.03 -10.18 3559 N. dutertei 355-425 0.01 1.68 0.01 1.34 2.361 -0.604 RC24-16 -5.03 -10.18 3559 N. dutertei 355-425 0.08 1.81 0.02 1.33 2.314 -0.247 RC24-17 -5.05 -10.18 3559 N. dutertrei 355-425 0.52 2.03 0.01 1.34 2.182 -0.423 RC24-17 -5.05 -10.18 3559 N. dutertrei 355-425 0.10 2.06 0.00 1.40 2.111 -0.199 RC11-17 -5.283 -33.433 4490 N. dutertrei 355-425 1.904 -0.231 RC24-19 -7.017 -10 3581 N. dutertei 355-425 0.04 1.80 0.01 1.32 1.695 -0.193 RC24-19 -7.017 -10 3581 N. dutertei 355-425 0.02 1.88 0.01 1.33 1.979 -0.411 RC24-21 -8.183 -10.117 3718 N. dutertei 355-425 0.03 2.01 0.01 1.34 2.036 0.221 RC24-21 -8.183 -10.117 3718 N. dutertei 355-425 0.05 1.92 0.01 1.36 V22-175 -8.767 -14.28 2950 N.dutertrei 355-425 -0.03 2.30 0.02 1.47 2.076 -0.298 V22-175 -8.767 -14.28 2950 N.dutertrei 355-425 -0.05 2.12 0.02 1.44 1.927 -0.094 RC13-210 -9.13 -10.6 3658 N. dutertei 355-425 0.02 1.94 0.01 1.44 1.929 0.460 RC13-210 -9.13 -10.6 3658 N. dutertei 355-425 0.07 1.88 0.02 1.36 2.118 0.533 V22-174 -10.067 -12.817 2630 N.dutertrei 355-425 -0.01 2.35 0.02 1.46 2.254 0.050 V22-174 -10.067 -12.817 2630 N.dutertrei 355-425 2.306 -0.023 RC16-77 -12.7 -13.4 3400 N. dutertei 355-425 0.00 1.73 0.00 1.39 RC16-77 -12.7 -13.4 3400 N. dutertei 355-425 0.03 1.93 0.01 1.36 V22-169 -16.25 -5.733 3499 N.dutertrei 355-425 0.03 1.87 0.04 1.42 V22-169 -16.25 -5.733 3499 N.dutertrei 355-425 -0.03 1.78 0.02 1.46 V16-36 -19.37 -11.43 3329 N. dutertrei 355-425 0.02 1.63 0.04 1.46 V16-36 -19.37 -11.43 3329 N. dutertrei 355-425 0.06 1.53 0.05 1.44 V16-37 -21.33 -8.95 3908 N. dutertrei 355-425 0.09 2.02 0.03 1.38 INMD111 -12.642 -13.847 3069 N. dutertrei 355-425 0.05 2.01 0.02 1.38 2.240 -0.281 INMD111 -12.642 -13.847 3069 N. dutertrei 355-425 0.07 1.96 0.03 1.38 INMD113 1-2cm -15.257 -14.960 3471 N. dutertrei 355-425 2.416 0.255 V16-35 7-8 -17.650 -15.100 3891 N. dutertrei 355-425 2.117 -0.072 V16-37 3-4 -21.330 -8.950 3908 N. dutertrei 355-425 2.115 1.018