# North Atlantic Globorotalia truncatulinoides Data During the Mid-Pleistocene #----------------------------------------------------------------------- # 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/26711 # Description: NOAA Landing Page # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/kaiser2019/kaiser2019-dsdp552.txt # Description: NOAA location of the template # # Data_Type: Paleoceanography # # Dataset_DOI: # # Parameter_Keywords: population abundance #--------------------------------------- # Contribution_Date # Date: 2019-05-06 #--------------------------------------- # File_Last_Modified_Date # Date: 2019-05-06 #--------------------------------------- # Title # Study_Name: North Atlantic Globorotalia truncatulinoides Data During the Mid-Pleistocene #--------------------------------------- # Investigators # Investigators: Kaiser, Emily A.; Caldwell, Andrew; Billups, Katharina #--------------------------------------- # Description_Notes_and_Keywords # Description: Provided Keywords: mid-Pleistocene transition, Globorotalia truncatulinoides, subtropical gyre, subpolar North Atlantic, cross-equatorial heat transport, precession #--------------------------------------- # Publication # Authors: Kaiser, E.A., Caldwell, A., and Billups, K. # Published_Date_or_Year: 2019 # Published_Title: North Atlantic Upper-Ocean Hydrography During the Mid-Pleistocene Transition Evidenced by Globorotalia truncatulinoides Coiling Ratios # Journal_Name: Paleoceaonography and Paleoclimatology # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: 10.1029/2018PA003502 # Online_Resource: # Full_Citation: # Abstract: We use the coiling direction of planktic foraminifer Globorotalia truncatulinoides from four sites in the North Atlantic Ocean to assess spatial changes in upper-ocean hydrography during the mid-Pleistocene climate transition. Core top sediments indicate that the left-coiling (sinistral) variety dominates regions characterized by a deep permanent thermocline as is characteristic of the subtropical gyre (Ocean Drilling Program Sites 1058 and Deep Sea Drilling Project Site 607) while right-coiling (dextral) tests dominate the tropical (Ocean Drilling Program Site 925) and subpolar site (Deep Sea Drilling Project Site 552). We observe pronounced changes in the dominant coiling direction at the three subtropical to subpolar sites during the first of the more extreme glacial to interglacial transitions of the mid-Pleistocene climate transition, Marine Isotope Stages (MISs) 22 to 21. We interpret these observations to reflect an increase in poleward warm water advection. The time interval between MIS 21 and MIS 15 is marked by a pronounced absence of sinistral tests. Because G. truncatulinoides (sinistral) is a deep dwelling species, their absence may be related to a decrease in dissolved oxygen during warm interglacial intervals. At the tropical site, precessional-scale variations dominate changes in the coiling direction until midpoint interglacial MIS 23. Occurrences in the sinistral variety at this locale must be linked to cross-equatorial water transport in the North Brazil Current, and precessional-scale variations provide evidence for the sensitivity of the tropical regions to precessional forcing, at least until MIS 23 when this morphotype disappears in agreement with observation at other sites in the Atlantic Ocean. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Science Foundation Research Experience for Undergraduate Program # Grant: NSF-OCE 1460963 #--------------------------------------- # Site_Information # Site_Name: DSDP 552A # Location: North Atlantic Ocean # Country: # Northernmost_Latitude: 56.033489 # Southernmost_Latitude: 56.033489 # Easternmost_Longitude: -23.216911 # Westernmost_Longitude: -23.216911 # Elevation: -2315 #--------------------------------------- # Data_Collection # Collection_Name: DSDP552A G.trunc Kaiser2019 # First_Year: 1203000 # Last_Year: 411000 # Time_Unit: cal yr BP # Core_Length: 14.9 # Notes: #--------------------------------------- # Chronology_Information # Chronology: #--------------------------------------- # 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) ## Site notes,,,,,paleoceanography,,,N,Site ## Hole notes,,,,,paleoceanography,,,C,Hole ## Core notes,,,,,paleoceanography,,,C,Core ## Section notes,,,,,paleoceanography,,,N,Section ## Top depth at sample start,,,centimeter,,paleoceanography,,,N, ## Bottom depth at sample end,,,centimeter,,paleoceanography,,,N, ## Depth depth,,,meter,,paleoceanography,,,N,meters below sea floor (mbsf) ## Age age,,,calendar kiloyear before present,,paleoceanography,,,N,hundred thousand years ago (kyr) ## G.trunc-sin Globorotalia truncatulinoides,,,count,,paleoceanography,,,N,sinistral ## G.trunc-dex Globorotalia truncatulinoides,,,count,,paleoceanography,,,N,dextral ## Total_Counts Globorotalia truncatulinoides,,,count,,paleoceanography,,,N, ## %sinistral Globorotalia truncatulinoides,,,percent,,paleoceanography,,,N, #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: Site Hole Core Section Top Bottom Depth Age G.trunc-sin G.trunc-dex Total_Counts %sinistral 552 A 2 3 7 9 7.07 411 3 5 8 38 552 A 2 3 14 16 7.14 412 0 9 9 0 552 A 2 3 21 23 7.21 412 3 2 5 60 552 A 2 3 29 31 7.29 414 1 0 1 100 552 A 2 3 36 38 7.36 415 0 0 0 0 552 A 2 3 43 45 7.43 415 NaN NaN NaN NaN 552 A 2 3 50 52 7.5 418 0 0 0 0 552 A 2 3 57 59 7.57 421 NaN NaN NaN NaN 552 A 2 3 64 66 7.64 424 0 0 0 0 552 A 2 3 71 73 7.71 427 NaN NaN NaN NaN 552 A 2 3 78 80 7.78 430 0 0 0 0 552 A 2 3 85 87 7.85 432 NaN NaN NaN NaN 552 A 2 3 92 94 7.92 435 0 1 1 0 552 A 2 3 99 101 7.99 438 NaN NaN NaN NaN 552 A 2 3 113 115 8.13 444 NaN NaN NaN NaN 552 A 2 3 120 122 8.2 447 NaN NaN NaN NaN 552 A 2 3 127 129 8.27 451 0 0 0 0 552 A 2 3 134 136 8.34 454 NaN NaN NaN NaN 552 A 2 3 141 143 8.41 457 1 0 1 100 552 A 2 3 148 150 8.48 460 NaN NaN NaN NaN 552 A 2 4 5 7 8.55 463 0 3 3 0 552 A 2 4 12 14 8.62 466 NaN NaN NaN NaN 552 A 2 4 19 21 8.69 469 0 5 5 0 552 A 2 4 26 28 8.76 472 10 21 31 32 552 A 2 4 33 35 8.83 476 13 12 25 52 552 A 2 4 37 39 8.87 477 14 14 28 50 552 A 2 cc 5 7 8.95 481 36 12 48 75 552 A 3 1 2 4 9.02 484 0 6 6 0 552 A 3 1 7 9 9.07 491 0 2 2 0 552 A 3 1 12 14 9.12 499 NaN NaN NaN NaN 552 A 3 1 17 19 9.17 506 NaN NaN NaN NaN 552 A 3 1 22 24 9.22 509 1 4 5 20 552 A 3 1 27 29 9.27 511 2 9 11 18 552 A 3 1 32 34 9.32 514 2 21 23 9 552 A 3 1 37 39 9.37 516 1 3 4 25 552 A 3 1 42 44 9.42 519 2 11 13 15 552 A 3 1 47 49 9.47 521 11 20 31 35 552 A 3 1 52 54 9.52 524 1 16 17 6 552 A 3 1 57 59 9.57 527 13 8 21 62 552 A 3 1 62 64 9.62 529 4 4 8 50 552 A 3 1 67 69 9.67 538 0 5 5 0 552 A 3 1 72 74 9.72 547 0 11 11 0 552 A 3 1 77 79 9.77 555 2 3 5 40 552 A 3 1 82 84 9.82 564 7 3 10 70 552 A 3 1 87 89 9.87 567 6 10 16 38 552 A 3 1 92 94 9.92 570 4 18 22 18 552 A 3 1 97 99 9.97 573 11 10 21 52 552 A 3 1 102 104 10.02 576 4 5 9 44 552 A 3 1 107 109 10.07 579 0 12 12 0 552 A 3 1 112 114 10.12 583 0 7 7 0 552 A 3 1 117 119 10.17 586 NaN NaN NaN NaN 552 A 3 1 122 124 10.22 588 0 7 7 0 552 A 3 1 127 129 10.27 591 1 8 9 11 552 A 3 1 132 134 10.32 594 4 12 16 25 552 A 3 1 137 139 10.37 597 5 5 10 50 552 A 3 1 142 144 10.42 600 3 17 20 15 552 A 3 1 147 149 10.47 603 3 17 20 15 552 A 3 2 7 9 10.57 609 4 54 58 7 552 A 3 2 17 19 10.67 616 2 49 51 4 552 A 3 2 28 30 10.78 619 0 5 5 0 552 A 3 2 38 40 10.88 621 NaN NaN NaN NaN 552 A 3 2 48 50 10.98 624 0 0 0 0 552 A 3 2 58 60 11.08 627 0 0 0 0 552 A 3 2 68 70 11.18 630 4 3 7 57 552 A 3 2 78 80 11.28 632 0 2 2 0 552 A 3 2 88 90 11.38 637 1 3 4 25 552 A 3 2 98 100 11.48 640 0 1 1 0 552 A 3 2 108 110 11.58 644 2 2 4 50 552 A 3 2 118 120 11.68 647 NaN NaN NaN NaN 552 A 3 2 128 130 11.78 649 0 0 0 0 552 A 3 2 138 140 11.88 652 NaN NaN NaN NaN 552 A 3 2 148 150 11.98 662 0 1 1 0 552 A 3 3 7 9 12.07 666 NaN NaN NaN NaN 552 A 3 3 17 3 12.17 669 0 0 0 0 552 A 3 3 27 29 12.27 672 NaN NaN NaN NaN 552 A 3 3 37 39 12.37 675 1 2 3 33 552 A 3 3 47 49 12.47 678 1 6 7 14 552 A 3 3 52 54 12.52 683 2 46 48 4 552 A 3 3 56 58 12.56 684 2 17 19 11 552 A 3 3 66 68 12.66 687 0 48 48 0 552 A 3 3 76 78 12.76 696 1 26 27 4 552 A 3 3 86 88 12.86 705 2 56 58 3 552 A 3 3 96 98 12.96 715 0 21 21 0 552 A 3 3 106 108 13.06 724 0 8 8 0 552 A 3 3 116 118 13.16 733 0 5 5 0 552 A 3 3 126 128 13.26 742 1 21 22 5 552 A 3 3 136 138 13.36 751 2 21 23 9 552 A 3 3 146 148 13.46 754 3 37 40 8 552 A 3 4 6 8 13.56 757 6 88 94 6 552 A 3 4 16 18 13.66 760 2 30 32 6 552 A 3 4 26 28 13.76 763 3 16 19 16 552 A 3 cc 6 8 13.89 767 0 1 1 0 552 A 4 1 5 7 14.05 772 3 8 11 27 552 A 4 1 15 17 14.15 775 NaN NaN NaN NaN 552 A 4 1 25 27 14.25 778 NaN NaN NaN NaN 552 A 4 1 35 37 14.35 781 0 25 25 0 552 A 4 1 45 47 14.45 785 NaN NaN NaN NaN 552 A 4 1 55 57 14.55 788 0 1 1 0 552 A 4 1 65 67 14.65 792 NaN NaN NaN NaN 552 A 4 1 75 77 14.75 796 0 0 0 0 552 A 4 1 80 82 14.8 799 NaN NaN NaN NaN 552 A 4 1 85 87 14.85 803 0 6 6 0 552 A 4 1 90 92 14.9 807 2 6 8 25 552 A 4 1 95 97 14.95 810 2 4 6 33 552 A 4 1 100 102 15 814 7 6 13 54 552 A 4 1 105 107 15.05 817 4 7 11 36 552 A 4 1 110 112 15.1 821 1 12 13 8 552 A 4 1 115 117 15.15 824 1 10 11 9 552 A 4 1 120 122 15.2 828 2 7 9 22 552 A 4 1 125 127 15.25 832 1 11 12 8 552 A 4 1 130 132 15.3 835 1 18 19 5 552 A 4 1 136 138 15.36 839 1 6 7 14 552 A 4 1 144 146 15.44 846 2 12 14 14 552 A 4 2 2 4 15.52 850 11 24 35 31 552 A 4 2 8 10 15.58 853 10 34 44 23 552 A 4 2 14 16 15.64 856 73 18 91 80 552 A 4 2 20 22 15.7 861 24 26 50 48 552 A 4 2 26 28 15.76 864 32 15 47 68 552 A 4 2 32 34 15.82 867 34 7 41 83 552 A 4 2 38 40 15.88 869 1 1 2 50 552 A 4 2 48 50 15.98 874 0 1 1 0 552 A 4 2 58 60 16.08 879 0 3 3 0 552 A 4 2 68 70 16.18 883 1 3 4 25 552 A 4 2 78 80 16.28 886 1 0 1 100 552 A 4 2 88 90 16.38 889 1 5 6 17 552 A 4 2 98 100 16.48 893 0 0 0 0 552 A 4 2 108 110 16.58 896 1 7 8 13 552 A 4 2 118 120 16.68 899 1 10 11 9 552 A 4 2 128 130 16.78 903 1 12 13 8 552 A 4 2 138 140 16.88 906 0 10 10 0 552 A 4 2 148 150 16.98 913 0 0 0 0 552 A 4 3 4 6 17.04 917 0 3 3 0 552 A 4 3 8 10 17.08 920 0 2 2 0 552 A 4 3 12 14 17.12 923 0 1 1 0 552 A 4 3 16 18 17.16 926 0 2 2 0 552 A 4 3 20 22 17.2 929 0 9 9 0 552 A 4 3 24 26 17.24 931 1 3 4 25 552 A 4 3 28 30 17.28 934 0 4 4 0 552 A 4 3 32 34 17.32 937 2 18 20 10 552 A 4 3 36 38 17.36 940 3 23 26 12 552 A 4 3 40 42 17.4 943 10 44 54 19 552 A 4 3 44 46 17.44 945 1 27 28 4 552 A 4 3 48 50 17.48 948 1 17 18 6 552 A 4 3 52 54 17.52 951 5 31 36 14 552 A 4 3 56 58 17.56 953 3 10 13 23 552 A 4 3 60 62 17.6 956 1 11 12 8 552 A 4 3 64 66 17.64 958 2 14 16 13 552 A 4 3 70 72 17.7 961 1 3 4 25 552 A 4 3 74 76 17.74 964 0 0 0 0 552 A 4 3 78 80 17.78 966 2 2 4 50 552 A 4 3 82 84 17.82 968 1 6 7 14 552 A 4 3 86 88 17.86 972 1 10 11 9 552 A 4 3 90 92 17.9 976 0 4 4 0 552 A 4 3 100 102 18 985 2 2 4 50 552 A 4 3 110 112 18.1 988 0 9 9 0 552 A 4 3 120 122 18.2 992 2 5 7 29 552 A 4 3 130 132 18.3 995 10 48 58 17 552 A 4 3 140 142 18.4 998 0 5 5 0 552 A 4 3 148 150 18.48 1000 0 1 1 0 552 A 4 4 8 10 18.58 1004 1 0 1 100 552 A 4 4 18 20 18.68 1007 4 4 8 50 552 A 4 4 28 30 18.78 1010 0 6 6 0 552 A 4 cc 8 10 18.88 1014 3 10 13 23 552 A 5 1 6 8 19.06 1021 0 13 13 0 552 A 5 1 16 18 19.16 1026 0 8 8 0 552 A 5 1 26 28 19.26 1030 3 8 11 27 552 A 5 1 36 38 19.36 1034 3 6 9 33 552 A 5 1 46 48 19.46 1039 0 6 6 0 552 A 5 1 52 54 19.52 1043 2 1 3 67 552 A 5 1 58 60 19.58 1047 0 0 0 0 552 A 5 1 64 66 19.64 1050 1 2 3 33 552 A 5 1 70 72 19.7 1054 0 0 0 0 552 A 5 1 76 78 19.76 1058 3 1 4 75 552 A 5 1 82 84 19.82 1061 1 3 4 25 552 A 5 1 88 90 19.88 1065 3 0 3 100 552 A 5 1 94 96 19.94 1069 2 4 6 33 552 A 5 1 100 102 20 1071 NaN NaN NaN NaN 552 A 5 1 106 108 20.06 1075 5 14 19 26 552 A 5 1 112 114 20.12 1079 NaN NaN NaN NaN 552 A 5 1 118 120 20.18 1082 9 7 16 56 552 A 5 1 126 128 20.26 1087 3 3 6 50 552 A 5 1 132 134 20.32 1091 4 8 12 33 552 A 5 1 138 140 20.38 1094 NaN NaN NaN NaN 552 A 5 1 144 146 20.44 1097 0 3 3 0 552 A 5 2 2 4 20.52 1102 1 2 3 33 552 A 5 2 8 10 20.58 1105 0 3 3 0 552 A 5 2 14 16 20.64 1109 2 3 5 40 552 A 5 2 20 22 20.7 1112 3 15 18 17 552 A 5 2 26 28 20.76 1116 0 8 8 0 552 A 5 2 32 34 20.82 1119 1 2 3 33 552 A 5 2 38 40 20.88 1123 2 3 5 40 552 A 5 2 44 46 20.94 1126 0 1 1 0 552 A 5 2 50 52 21 1130 0 1 1 0 552 A 5 2 56 58 21.06 1134 0 3 3 0 552 A 5 2 62 64 21.12 1138 NaN NaN NaN NaN 552 A 5 2 68 70 21.18 1142 3 0 3 100 552 A 5 2 74 76 21.24 1147 2 1 3 67 552 A 5 2 80 82 21.3 1150 1 4 5 20 552 A 5 2 86 88 21.36 1155 3 8 11 27 552 A 5 2 92 94 21.42 1159 2 16 18 11 552 A 5 2 98 100 21.48 1163 0 15 15 0 552 A 5 2 102 104 21.52 1166 2 42 44 5 552 A 5 2 106 108 21.56 1170 3 46 49 6 552 A 5 2 110 112 21.6 1174 3 63 66 5 552 A 5 2 114 116 21.64 1178 2 30 32 6 552 A 5 2 118 120 21.68 1182 6 48 54 11 552 A 5 2 122 124 21.72 1186 2 57 59 3 552 A 5 2 126 128 21.76 1189 4 21 25 16 552 A 5 2 130 132 21.8 1193 NaN NaN NaN NaN 552 A 5 2 134 136 21.84 1197 NaN NaN NaN NaN 552 A 5 2 138 140 21.88 1201 NaN NaN NaN NaN 552 A 5 2 142 144 21.92 1203 NaN NaN NaN NaN