# Western Makassar Strait Radiocarbon, d18O and d13C Data During the Last 30 ka #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/32196 # Description: NOAA Landing Page # Online_Resource: https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/stott2020-grl/stott2020-2181-c14.txt # Description: NOAA template (tab-delimited data); MD98-2181 C14 Data # # Data_Type: Paleoceanography # # Dataset_DOI: # # Parameter_Keywords: carbon isotopes, oxygen isotopes #--------------------------------------- # Contribution_Date # Date: 2021-01-04 #--------------------------------------- # File_Last_Modified_Date # Date: 2021-01-04 #--------------------------------------- # Title # Study_Name: Western Makassar Strait Radiocarbon, d18O and d13C Data During the Last 30 ka #--------------------------------------- # Investigators # Investigators: Stott, Lowell #--------------------------------------- # Description_Notes_and_Keywords # Description: Intervals 955cm and 1011cm are excluded due to core disturbances # Provided Keywords: isotope analysis, mysterious radiocarbon anomalies #--------------------------------------- # Publication # Authors: Stott, L.D., Shao, J., Yu, J., and Harazin, K.M. # Published_Date_or_Year: 2020 # Published_Title: Evaluating the glacial-deglacial carbon respiration and ventilation change hypothesis as a mechanism for changing atmospheric CO2 # Journal_Name: Geophysical Research Letters # Volume: 47 # Edition: # Issue: # Pages: # Report_Number: e2020GL091296 # DOI: 10.1029/2020GL091296 # Online_Resource: # Full_Citation: # Abstract: The prevailing hypothesis to explain pCO2 rise at the last glacial termination calls upon enhanced ventilation of excess respired carbon that accumulated in the deep sea during the glacial. Recent studies argue lower [O2] in the glacial ocean is indicative of increased carbon respiration. The magnitude of [O2] depletion was 100-140µmol/kg at the glacial maximum. Because respiration is coupled to d13C of dissolved inorganic carbon (DIC), [O2] depletion of 100-140µmol/kg from carbon respiration would lower deep water d13CDIC by ~ 1‰ relative to surface water. Prolonged sequestration of respired carbon would also lower the amount of 14C in the deep sea. We show that Pacific Deep Water d13CDIC did not decrease relative to the surface ocean and ?14C was only ~50‰ lower during the late glacial. Model simulations of the hypothesized ventilation change during deglaciation lead to large increases in d13CDIC, ∆14C and 14C that are not recorded in observations. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Science Foundation # Grant: 1904433, 1558990 #--------------------------------------- # Site_Information # Site_Name: MD98-2181 # Location: Western Pacific Ocean # Northernmost_Latitude: 6.3 # Southernmost_Latitude: 6.3 # Easternmost_Longitude: 125.82 # Westernmost_Longitude: 125.82 # Elevation: 2114 #--------------------------------------- # Data_Collection # Collection_Name: MD98-2181 14C Stott2020 # First_Year: 30830 # Last_Year: 580 # Time_Unit: 14C yr BP # Core_Length: 50 # Notes: #--------------------------------------- # Chronology_Information # Chronology: # # Labcode sample identification used by 14C laboratory # depth sample depth (cm) # thickness sample thickness # plk.14C.raw planktonic D14C raw # 14C.raw_err planktonic D14C raw error # species species measured # calCurves calibration curves # Bchron_Cal_age Bchron Calendar Age # age_error age error # Fm Fraction of modern # Fm_error Fraction of modern error # D14C Delta 14C # D14Cerror Delta 14C error # # Labcode depth thickness plk.14C.raw 14C.raw_err species calCurves Bchron_Cal_age age_error Fm Fm_error D14C D14Cerror # OS-36493 12 8 580 110 G.ruber/G.sacculifer marine13 77.5 63.5 0.930342793056293 -1.27396622975466E-02 -60.8940666473602 14.7448374640609 # OS-37308 55 6 815 200 G.ruber/G.sacculifer marine20 265 84.275 0.903520488883049 -2.24952194418785E-02 -67.0460553220844 25.0999003378375 # OS-37292 99 6 1010 100 G.ruber/G.sacculifer marine20 446 75.0125 0.881851717244158 -0.010977862781578 -69.2631904195188 14.3379122821851 # OS-37306 145 6 1090 120 G.ruber/G.sacculifer marine20 618.5 90.05 0.873113013268747 -1.30428932643159E-02 -59.0547582155496 17.3965536783557 # 90357 201 2 1750 15 Mixed planktonics marine20 1125 63.25 0.804244973240807 -1.50176454607396E-03 -78.5070137446449 7.25759795039384 # OS-36485 238 8 1900 100 G. sacculifer marine20 1340.5 86.025 0.789366671165147 -9.82654887545309E-03 -71.6663295150265 15.0625664478263 # 104528 351 2 2575 20 G.ruber marine20 2090 80.28125 0.725747790854851 -1.80691594884813E-03 -65.4829619877488 9.36917404355315 # OS-37303 501 2 4070 190 G. sacculifer marine20 3887 207.30625 0.602504570721092 -1.42506994195204E-02 -35.7933473599873 33.2383659583596 # 104529 610 4 4925 30 G.ruber/G.sacculifer marine20 5061 94.5062499999999 0.541671267494615 -2.02292269697976E-03 -0.86643351579696 12.0165262632443 # OS-34874 711 10 6950 50 G. sacculifer marine20 7246 81.26875 0.420975295372218 -2.62028691256204E-03 11.4323476062719 11.7688472551335 # OS-34875 755 10 7360 50 G. sacculifer marine20 7666.5 76.0124999999998 0.400028057707269 -0.002489904504589 11.2588237443176 11.2288219599301 # OS-34876 861 6 9480 65 G. sacculifer marine20 10161.5 111.775 0.307238194100464 -2.48605534875267E-03 50.3303138500821 16.5507261441293 # OS-47735 920 2 10450 120 G. sacculifer marine20 11433 153.28125 0.272291021110161 -4.06758652224814E-03 85.6361796988991 25.8503855043205 # OS-49939, OS-51034,OS-51089 986 2 11075 75 G. ruber/ P.obliquiloculata (averaged) marine20 12369 105.51875 0.251908862819624 -2.3519438206737E-03 124.782875684998 17.7881161116198 # OS-50384 1000 2 11150 80 G. ruber marine20 12579 73.5062499999999 0.249567864355182 -2.48542626022838E-03 143.000966789421 15.2601822725206 # OS-49297 1036 2 12100 80 G. ruber marine20 13420 95.2624999999998 0.221731837175883 -2.20820950754023E-03 124.266510209092 17.123595948224 # OS-50386 1046 2 12450 75 N. dutertrei marine20 13770 117.2625 0.212278361308666 -1.98193415886343E-03 122.883644935575 19.0689036341461 # OS-53566, OS-52737 1047 2 12525 210 G. sacculifer/ P.obliquiloculata (averaged) marine20 13922 118.03125 0.210305650573936 -5.49784471810363E-03 133.092944289458 33.7517342214783 # OS-51096, OS-51097, OS-51090 1049 2 12625 80 G. ruber/ P.obliquiloculata (averaged) marine20 14130 99.7624999999998 0.207703857285389 -2.06850598566303E-03 147.590036613808 17.9561432586362 # OS-52726, OS-52734 1054 2 12850 70 G. sacculifer/ P.obliquiloculata (averaged) marine20 14377.5 120.05 0.201966903751498 -1.75995061155296E-03 149.807730101432 19.4734207354994 # OS-49300 1061 2 12850 80 G. ruber marine20 14630.5 125.53125 0.201966903751498 -2.01137212748909E-03 185.542110487572 21.5292603680547 # OS-34878, OS-49303 1086 2 13425 75 G.ruber/G.sacculifer marine20 15245.5 108.525 0.188015443844352 -1.75540374559024E-03 188.886272682867 19.1525646100496 # 90361 1117 2 13600 30 G. sacculifer marine20 15564 93.7562499999999 0.183963794872682 -6.87030231069395E-04 208.960346220123 14.4358780973487 # 39295 1125 2 13730 30 G. sacculifer marine20 15791 95.78125 0.181010624263848 -6.76001335480574E-04 222.670887839246 14.8843716336451 # 39300 1147 2 14365 35 G. sacculifer marine20 16530.5 113.28125 0.167252860824568 -7.28725274350789E-04 235.463384662907 17.7654840066601 # 90363 1177 2 14865 30 G. sacculifer marine20 17177 96.7750000000005 0.157159868401135 -5.86928426743939E-04 255.344413939608 15.4258305297098 # OS-34879, OS-54927 1211 2 15650 80 G. sacculifer/ P.obliquiloculata (averaged) marine20 18092.5 125.53125 0.142528454454798 -1.41942939828008E-03 271.803670835304 23.0957568898166 # OS-34880, OS-54929 1286 2 17025 110 G. sacculifer/ P.obliquiloculata (averaged) marine20 19642.5 164.7875 0.12010576528697 -1.64467000890909E-03 292.748637070107 31.2644889839044 # OS-34972 1486 10 20300 260 G. sacculifer marine20 23506.5 255.0875 7.98922991245841E-02 -2.58583315976495E-03 372.323780013517 61.3691426676165 # OS-60240 1561 2 21900 110 G. ruber marine20 25285 149.525 6.54640461087932E-02 -8.96432848495861E-04 394.411201758245 31.6346850977871 # OS-60239 1711 2 24800 130 G. ruber marine20 28076.5 168.0375 0.04562657113923 -7.38385939014054E-04 362.265568937538 35.3954372082931 # #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## 14C_depth_cm depth,,,centimeter,,paleoceanography,,,N, ## Species notes,calcite,,,,paleoceanography,,accelerator mass spectrometry,C,type/species analyzed; foraminifer calcite ## Sample_wt weight,calcite,,milligram,,paleoceanography,,,N,sample weight of foraminifers; foraminifer calcite ## plank_14C_raw_age age,Delta 14C,,radiocarbon year before present,,paleoceanography,,,N,planktonic foraminifers ## benth_14C_raw_age age,Delta 14C,,radiocarbon year before present,,paleoceanography,,,N,benthic foraminifers ## 14C_err age,Delta 14C,unspecified error,radiocarbon year,,paleoceanography,,,N,14C age uncertainty ## Lab sample identification,,,,,paleoceanography,,,C,AMS laboratory ## Accession# sample identification,,,,,paleoceanography,,,C,Accession# #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: -999 14C_depth_cm Species Sample_wt plank_14C_raw_age benth_14C_raw_age 14C_err Lab Accession# 12.00 G.ruber+G.sacculifer 1.165 580 -999 110 WHOI OS-36493 55.00 G.ruber+G.sacculifer 0.814 815 -999 200 WHOI OS-37308 99.00 G.ruber+G.sacculifer 1.474 1010 -999 100 WHOI OS-37292 145.00 G.ruber+G.sacculifer 0.869 1090 -999 120 WHOI OS-37306 201 Mixed planktonics 1.573 1750 -999 15 UCI 90357 201 Mixed benthics 1.772 -999 2980 15 UCI 90358 238 G. sacculifer 1.927 1900 -999 100 WHOI OS-36485 301 Mixed benthics 1.451 -999 3630 30 UCI 147306 351 G.ruber 1.302 2575 -999 20 UCI 104528 351 Mixed benthics 1.103 -999 3840 45 UCI 147307 402 G. sacculifer 1.748 3960 -999 150 WHOI OS-37289 402 Mixed benthics 3.035 -999 4430 20 UCI 90359 451 Mixed benthics 1.474 -999 4495 35 UCI 147308 501 G. sacculifer 0.919 4070 -999 190 WHOI OS-37303 501 Mixed benthics 1.223 -999 5184 35 UCI 147309 610 G.ruber+G.sacculifer 1.261 4925 -999 30 UCI 104529 610 Mixed benthics 2.825 -999 6190 30 UCI 147310 711 G. sacculifer 3.681 6950 -999 50 WHOI OS-34874 755 G. sacculifer 6.801 7360 -999 50 WHOI OS-34875 755 C. mundula 5.963 -999 8950 50 WHOI OS-55868 861 G. sacculifer 4.165 9480 -999 65 WHOI OS-34876 861 C. mundula 4.076 -999 10350 65 WHOI OS-55869 920 G. sacculifer 1.256 10450 -999 120 WHOI OS-47735 920 Mixed benthics 1.893 -999 11200 60 UCI 147311 941 C. mundula 8.236 -999 11800 70 WHOI OS-55819 941 G. sacculifer 2.038 11050 -999 310 WHOI OS-36478 941 G. ruber 4.321 10850 -999 130 WHOI OS-49938 941 P. obliquiloculata 2.668 12600 -999 80 WHOI OS-51309 941 P.obliquiloculata 4.21 11550 -999 85 WHOI OS-51038 955 G.ruber 3.715 17350 -999 120 WHOI OS-40505 955 G. sacculifer 5.665 14850 -999 75 WHOI OS-38541 955 Epibenthics 2.996 -999 13775 45 UCI 131762 955 Epibenthics 2.459 -999 15800 100 UCI 136756 961 G. ruber 3.054 12450 -999 75 WHOI OS-47068 961 G. sacculifer 4.623 14100 -999 65 WHOI OS-38542 961 G. sacculifer 4.181 13700 -999 180 WHOI OS-35980 961 C. mundula 5.363 -999 12535 40 UCI 136757 986 G. ruber 3.708 11050 -999 75 WHOI OS-49939 986 P. obliquiloculata 3.587 10950 -999 75 WHOI OS-51034 986 P.obliquiloculata 6.991 11100 -999 75 WHOI OS-51089 986 C. mundula 3.768 -999 12380 30 UCI 39294 986 Mixed benthics 4.445 -999 12395 30 UCI 46980 1000 G. ruber 2.51 11150 -999 80 WHOI OS-50384 1000 Mixed benthics 4.799 -999 12585 30 UCI 46981 1011 G. ruber 3.682 14150 -999 130 WHOI OS-49298 1011 G. sacculifer 8.051 13650 -999 55 WHOI OS-34877 1036 G. ruber 3.132 12100 -999 80 WHOI OS-49297 1036 Mixed benthics 3.289 -999 13110 50 UCI 147312 1046 N. dutertrei 2.473 12450 -999 75 WHOI OS-50386 1047 G. sacculifer 2.182 12400 -999 210 WHOI OS-53566 1047 P.obliquiloculata 6.524 12650 -999 65 WHOI OS-52737 1049 G. ruber 4.883 12650 -999 80 WHOI OS-51096 1049 P. obliquiloculata 4.29 12850 -999 70 WHOI OS-51097 1049 P.obliquiloculata 7.699 12600 -999 65 WHOI OS-51090 1054 G. sacculifer 3.518 12900 -999 45 WHOI OS-52726 1054 P.obliquiloculata 6.043 12800 -999 70 WHOI OS-52734 1061 G. ruber 4.1 12850 -999 80 WHOI OS-49300 1061 Mixed benthics 2.422 -999 13885 50 UCI 90360 1086 G. sacculifer 5.736 13400 -999 55 WHOI OS-34878 1086 G. ruber 4.829 13450 -999 75 WHOI OS-49303 1086 C. mundula 5.889 -999 14550 70 WHOI OS-54924 1117 G. sacculifer 6.725 13600 -999 30 UCI 90361 1117 Mixed Benthics 3.726 -999 14900 35 UCI 90362 1125 G. sacculifer 4.276 13730 -999 30 UCI 39295 1125 Mixed Benthics 6.114 -999 15170 35 UCI 39296 1147 G. sacculifer 3.658 14365 -999 35 UCI 39300 1147 Mixed benthics 3.612 -999 15580 40 UCI 39301 1177 G. sacculifer 6.705 14865 -999 30 UCI 90363 1177 Mixed Benthics 4.559 -999 16350 35 UCI 90364 1211 G. sacculifer 4.831 15550 -999 65 WHOI OS-34879 1211 P.obliquiloculata 5.533 15750 -999 80 WHOI OS-54927 1211 Mixed benthics 5.467 -999 17150 85 WHOI OS-54925 1286 G. sacculifer 4.457 16800 -999 95 WHOI OS-34880 1286 P.obliquiloculata 3.968 17250 -999 110 WHOI OS-54929 1286 Mixed benthics 3.981 -999 18500 130 WHOI OS-54925 1311 Rub.+Sacc.+ dut 3.663 17340 -999 70 UCI 228654 1311 Mixed benthics 4.287 -999 18845 40 UCI 149450 1361 Mixed benthics 4.402 -999 19605 45 UCI 149451 1411 Mixed benthics 2.489 -999 20620 90 UCI 149452 1461 Mixed benthics 3.714 -999 21710 60 UCI 149453 1486 G. sacculifer 2.792 20300 -999 260 WHOI OS-34972 1486 Mixed benthics 3.667 -999 21800 95 WHOI OS-55820 1561 G. ruber 4.123 21900 -999 110 WHOI OS-60240 1561 Mixed Benthics 3.345 -999 23600 160 WHOI OS-60238 1650 N. dutertrei+G. ruber 3.540 23930 -999 110 UCI 228655 1650 Mixed benthics 2.780 -999 25370 860 UCI 228656 1711 G. sacculifer 4.692 24800 -999 130 WHOI OS-34881 1711 G. ruber 3.716 24800 -999 140 WHOI OS-60239 1711 Mixed Benthics 5.277 -999 26900 120 WHOI OS-60246 1750 N. dutertrei 2.578 25370 -999 200 UCI 226976 1750 Mixed benthics 2.627 -999 27480 160 UCI 226977 1800 N. dutertrei 1.229 27200 -999 1300 UCI 226978 1800 Mixed benthics 0.734 -999 28390 910 UCI 226979 1850 N. dutertrei 1.375 28080 -999 370 UCI 226980 1850 Mixed benthics 1.027 -999 29710 680 UCI 226981 1911 G. ruber 3.46 28400 -999 150 WHOI OS-60283 1911 Mixed Benthics 2.754 -999 27600 300 WHOI OS-60288 1924 N. dutertrei 2.034 29010 -999 240 UCI 226982 1924 Mixed benthics 0.762 -999 30200 1000 UCI 226983 1950 N. dutertrei 2.626 29280 -999 200 UCI 226984 1950 Mixed benthics 1.363 -999 30830 430 UCI 226985