# 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-odp925.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: ODP 925B # Location: North Atlantic Ocean # Country: # Northernmost_Latitude: 4.200069 # Southernmost_Latitude: 4.200069 # Easternmost_Longitude: -43.48343 # Westernmost_Longitude: -43.48343 # Elevation: -3052 #--------------------------------------- # Data_Collection # Collection_Name: ODP925B G.trunc Kaiser2019 # First_Year: 1164000 # Last_Year: 434000 # Time_Unit: cal yr BP # Core_Length: 22.46 # 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: NaN Site Hole Core Section Top Bottom Depth Age G.trunc-sin G.trunc-dex Total_Counts %sinistral 925 B 3 1 12 14 17.03 434 0 97 97 0.0 925 B 3 1 24 26 17.15 436 4 138 142 2.8 925 B 3 1 34 36 17.25 438 3 78 81 3.7 925 B 3 1 44 46 17.35 440 2 66 68 2.9 925 B 3 1 54 56 17.45 442 4 94 98 4.1 925 B 3 1 64 66 17.55 444 4 155 159 2.5 925 B 3 1 74 76 17.65 445 3 123 126 2.4 925 B 3 1 84 86 17.75 446 12 115 127 9.4 925 B 3 1 94 96 17.85 448 16 97 113 14.2 925 B 3 1 104 106 17.95 449 9 175 184 4.9 925 B 3 1 114 116 18.05 450 31 91 122 25.4 925 B 3 1 124 126 18.15 451 57 50 107 53.3 925 B 3 1 134 136 18.25 453 18 92 110 16.4 925 B 3 1 144 146 18.35 454 1 81 82 1.2 925 B 3 2 2 4 18.43 456 2 194 196 1.0 925 B 3 2 12 14 18.53 457 5 320 325 1.5 925 B 3 2 22 24 18.63 459 10 284 294 3.4 925 B 3 2 32 34 18.73 461 2 169 171 1.2 925 B 3 2 42 44 18.83 463 1 74 75 1.3 925 B 3 2 52 54 18.93 465 1 28 29 3.4 925 B 3 2 62 64 19.03 467 0 9 9 0.0 925 B 3 2 72 74 19.13 469 0 9 9 0.0 925 B 3 2 82 84 19.23 472 0 13 13 0.0 925 B 3 2 92 94 19.33 474 0 1 1 0.0 925 B 3 2 102 104 19.43 477 0 0 0 0.0 925 B 3 2 112 114 19.53 479 1 2 3 33.3 925 B 3 2 122 124 19.63 482 0 0 0 0.0 925 B 3 2 132 134 19.73 484 0 3 3 0.0 925 B 3 2 142 144 19.83 487 0 32 32 0.0 925 B 3 3 8 10 19.99 491 5 95 100 5.0 925 B 3 3 18 20 20.09 495 7 133 140 5.0 925 B 3 3 28 30 20.19 498 14 284 298 4.7 925 B 3 3 38 40 20.29 501 7 125 132 5.3 925 B 3 3 48 50 20.39 504 7 75 82 8.5 925 B 3 3 58 60 20.49 507 29 80 109 26.6 925 B 3 3 68 70 20.59 510 1 15 16 6.3 925 B 3 3 78 80 20.69 513 14 4 18 77.8 925 B 3 3 88 90 20.79 516 5 1 6 83.3 925 B 3 3 98 100 20.89 520 6 11 17 35.3 925 B 3 3 108 110 20.99 524 10 4 14 71.4 925 B 3 3 118 120 21.09 528 162 3 165 98.2 925 B 3 3 128 130 21.19 532 404 11 415 97.3 925 B 3 3 138 140 21.29 536 422 19 441 95.7 925 B 3 3 148 150 21.39 540 344 3 347 99.1 925 B 3 4 10 12 21.51 544 150 7 157 95.5 925 B 3 4 22 24 21.63 547 130 1 131 99.2 925 B 3 4 32 34 21.73 550 135 5 140 96.4 925 B 3 4 42 44 21.83 554 100 8 108 92.6 925 B 3 4 52 54 21.93 557 45 76 121 37.2 925 B 3 4 62 64 22.03 560 23 119 142 16.2 925 B 3 4 72 74 22.13 563 114 207 321 35.5 925 B 3 4 82 84 22.23 566 35 159 194 18.0 925 B 3 4 92 94 22.33 569 90 49 139 64.7 925 B 3 4 102 104 22.43 572 339 13 352 96.3 925 B 3 4 112 114 22.53 574 224 17 241 92.9 925 B 3 4 122 124 22.63 577 50 62 112 44.6 925 B 3 4 132 134 22.73 579 13 97 110 11.8 925 B 3 4 142 144 22.83 582 145 60 205 70.7 925 B 3 5 2 4 22.93 585 284 42 326 87.1 925 B 3 5 12 14 23.03 588 115 38 153 75.2 925 B 3 5 22 24 23.13 591 61 20 81 75.3 925 B 3 5 32 34 23.23 594 38 54 92 41.3 925 B 3 5 42 44 23.33 597 84 40 124 67.7 925 B 3 5 52 54 23.43 600 205 10 215 95.3 925 B 3 5 62 64 23.53 603 147 6 153 96.1 925 B 3 5 72 74 23.63 607 236 14 250 94.4 925 B 3 5 82 84 23.73 611 154 15 169 91.1 925 B 3 5 92 94 23.83 615 13 113 126 10.3 925 B 3 5 102 104 23.93 619 8 121 129 6.2 925 B 3 5 112 114 24.01 622 6 85 91 6.6 925 B 3 5 122 124 24.13 627 1 85 86 1.2 925 B 3 5 132 134 24.23 629 10 94 104 9.6 925 B 3 5 142 144 24.33 632 67 98 165 40.6 925 B 3 6 0 2 24.41 634 37 166 203 18.2 925 B 3 6 10 12 24.51 636 8 203 211 3.8 925 B 3 6 20 22 24.61 639 7 107 114 6.1 925 B 3 6 30 32 24.71 643 3 73 76 3.9 925 B 3 6 40 42 24.81 646 13 101 114 11.4 925 B 3 6 50 52 24.91 649 25 222 247 10.1 925 B 3 6 60 62 25.01 652 30 110 140 21.4 925 B 3 6 70 72 25.11 655 56 75 131 42.7 925 B 3 6 80 82 25.21 658 12 86 98 12.2 925 B 3 6 90 92 25.31 662 19 70 89 21.3 925 B 3 6 100 102 25.41 666 4 85 89 4.5 925 B 3 6 110 112 25.51 670 20 316 336 6.0 925 B 3 6 120 122 25.61 674 6 183 189 3.2 925 B 3 6 130 132 25.71 677 8 115 123 6.5 925 B 3 6 140 142 25.81 681 6 143 149 4.0 925 B 3 6 148 150 25.89 685 6 148 154 3.9 925 B 3 7 18 20 26.09 692 6 82 88 6.8 925 B 3 7 28 30 26.19 696 0 17 17 0.0 925 B 3 7 38 40 26.29 700 2 52 54 3.7 925 B 3 8 5 7 26.38 703 6 93 99 6.1 925 B 4 1 8 10 27.08 725 20 267 287 7.0 925 B 4 1 20 22 27.2 728 2 113 115 1.7 925 B 4 1 30 32 27.3 732 12 304 316 3.8 925 B 4 1 40 42 27.4 736 6 148 154 3.9 925 B 4 1 50 52 27.5 740 6 169 175 3.4 925 B 4 1 60 62 27.6 744 8 292 300 2.7 925 B 4 1 72 74 27.72 748 3 162 165 1.8 925 B 4 1 80 82 27.8 751 3 101 104 2.9 925 B 4 1 90 92 27.9 754 3 73 76 3.9 925 B 4 1 100 102 28 757 5 126 131 3.8 925 B 4 1 110 112 28.1 760 9 180 189 4.8 925 B 4 1 120 122 28.2 763 2 63 65 3.1 925 B 4 1 130 132 28.3 766 5 111 116 4.3 925 B 4 1 140 142 28.4 770 0 37 37 0.0 925 B 4 1 148 150 28.48 773 0 30 30 0.0 925 B 4 2 10 12 28.6 778 0 2 2 0.0 925 B 4 2 20 22 28.7 782 0 46 46 0.0 925 B 4 2 30 32 28.8 786 5 115 120 4.2 925 B 4 2 40 42 28.9 790 NaN NaN NaN NaN 925 B 4 2 50 52 29 793 3 41 44 6.8 925 B 4 2 60 62 29.1 796 79 145 224 35.3 925 B 4 2 70 72 29.2 799 89 21 110 80.9 925 B 4 2 80 82 29.3 802 94 16 110 85.5 925 B 4 2 90 92 29.4 805 172 47 219 78.5 925 B 4 2 100 102 29.5 808 323 36 359 90.0 925 B 4 2 110 112 29.6 812 31 167 198 15.7 925 B 4 2 120 122 29.7 815 13 135 148 8.8 925 B 4 2 130 132 29.8 818 8 90 98 8.2 925 B 4 2 140 142 29.9 821 16 134 150 10.7 925 B 4 2 148 150 29.98 823 14 204 218 6.4 925 B 4 3 5 7 30.05 826 6 124 130 4.6 925 B 4 3 15 17 30.15 830 4 100 104 3.8 925 B 4 3 25 27 30.25 834 6 174 180 3.3 925 B 4 3 35 37 30.35 838 3 98 101 3.0 925 B 4 3 45 47 30.45 842 5 183 188 2.7 925 B 4 3 55 57 30.55 846 3 142 145 2.1 925 B 4 3 65 67 30.65 849 2 33 35 5.7 925 B 4 3 75 77 30.75 853 1 54 55 1.8 925 B 4 3 85 87 30.85 857 5 39 44 9.1 925 B 4 3 95 97 30.95 861 6 12 18 33.3 925 B 4 3 105 107 31.05 865 7 21 28 25.0 925 B 4 3 115 117 31.15 869 20 97 117 17.1 925 B 4 3 125 127 31.25 873 20 141 161 12.4 925 B 4 3 135 137 31.35 877 12 128 140 8.6 925 B 4 3 145 147 31.45 881 9 127 136 6.6 925 B 4 4 8 10 31.58 886 1 76 77 1.3 925 B 4 4 18 20 31.68 890 1 131 132 0.8 925 B 4 4 28 30 31.78 894 3 109 112 2.7 925 B 4 4 38 40 31.88 898 3 121 124 2.4 925 B 4 4 48 50 31.98 901 2 109 111 1.8 925 B 4 4 58 60 32.08 905 3 69 72 4.2 925 B 4 4 68 70 32.18 909 0 33 33 0.0 925 B 4 4 78 80 32.28 913 0 8 8 0.0 925 B 4 4 88 90 32.38 917 0 33 33 0.0 925 B 4 4 98 100 32.48 921 6 168 174 3.4 925 B 4 4 108 110 32.58 925 23 143 166 13.9 925 B 4 4 118 120 32.68 928 25 52 77 32.5 925 B 4 4 128 130 32.78 932 35 32 67 52.2 925 B 4 4 138 140 32.88 935 NaN NaN NaN NaN 925 B 4 4 148 150 32.98 938 NaN NaN NaN NaN 925 B 4 5 5 7 33.05 940 NaN NaN NaN NaN 925 B 4 5 15 17 33.15 943 0 9 9 0.0 925 B 4 5 25 27 33.25 946 6 42 48 12.5 925 B 4 5 35 37 33.35 949 62 73 135 45.9 925 B 4 5 45 47 33.45 952 177 27 204 86.8 925 B 4 5 55 57 33.55 954 188 39 227 82.8 925 B 4 5 65 67 33.65 957 17 64 81 21.0 925 B 4 5 75 77 33.75 959 1 65 66 1.5 925 B 4 5 85 87 33.85 962 4 75 79 5.1 925 B 4 5 95 97 33.95 965 16 7 23 69.6 925 B 4 5 105 107 34.05 968 19 5 24 79.2 925 B 4 5 115 117 34.15 971 NaN NaN NaN NaN 925 B 4 5 125 127 34.25 974 143 7 150 95.3 925 B 4 5 135 137 34.35 977 207 12 219 94.5 925 B 4 5 145 147 34.45 980 215 33 248 86.7 925 B 4 6 8 10 34.58 984 29 107 136 21.3 925 B 4 6 20 22 34.7 988 17 28 45 37.8 925 B 4 6 30 32 34.8 991 102 36 138 73.9 925 B 4 6 40 42 34.9 994 130 8 138 94.2 925 B 4 6 50 52 35 998 246 37 283 86.9 925 B 4 6 60 62 35.1 1001 43 63 106 40.6 925 B 4 6 70 72 35.2 1005 26 74 100 26.0 925 B 4 6 80 82 35.3 1009 51 97 148 34.5 925 B 4 6 90 92 35.4 1013 81 35 116 69.8 925 B 4 6 100 102 35.5 1017 110 9 119 92.4 925 B 4 6 110 112 35.6 1021 70 11 81 86.4 925 B 4 6 120 122 35.7 1025 42 64 106 39.6 925 B 4 6 130 132 35.8 1030 53 98 151 35.1 925 B 4 6 140 142 35.9 1034 79 46 125 63.2 925 B 4 6 148 150 35.98 1038 88 19 107 82.2 925 B 4 7 10 12 36.1 1044 53 54 107 49.5 925 B 4 7 20 22 36.2 1049 29 67 96 30.2 925 B 4 7 30 32 36.3 1054 18 17 35 51.4 925 B 4 7 40 42 36.4 1058 19 23 42 45.2 925 B 4 7 50 52 36.5 1062 26 12 38 68.4 925 B 4 7 60 62 36.6 1064 20 4 24 83.3 925 B 4 7 68 70 36.68 1066 114 32 146 78.1 925 B 5 1 5 7 36.99 1074 7 10 17 41.2 925 B 5 1 15 17 37.09 1077 45 58 103 43.7 925 B 5 1 25 27 37.19 1079 36 34 70 51.4 925 B 5 1 35 37 37.29 1082 30 26 56 53.6 925 B 5 1 45 47 37.39 1085 50 16 66 75.8 925 B 5 1 55 57 37.49 1088 11 23 34 32.4 925 B 5 1 65 67 37.59 1092 2 2 4 50.0 925 B 5 1 75 77 37.69 1096 8 0 8 100.0 925 B 5 1 85 87 37.79 1100 50 43 93 53.8 925 B 5 1 95 97 37.89 1104 81 95 176 46.0 925 B 5 1 105 107 37.99 1107 42 93 135 31.1 925 B 5 1 115 117 38.09 1111 109 53 162 67.3 925 B 5 1 125 127 38.19 1115 136 16 152 89.5 925 B 5 1 135 137 38.29 1119 112 44 156 71.8 925 B 5 1 145 147 38.39 1123 99 31 130 76.2 925 B 5 2 5 7 38.49 1127 252 21 273 92.3 925 B 5 2 15 17 38.59 1131 50 92 142 35.2 925 B 5 2 25 27 38.69 1135 116 40 156 74.4 925 B 5 2 35 37 38.79 1139 164 98 262 62.6 925 B 5 2 45 47 38.89 1143 184 37 221 83.3 925 B 5 2 55 57 38.99 1147 165 107 272 60.7 925 B 5 2 65 67 39.09 1151 157 34 191 82.2 925 B 5 2 75 77 39.19 1154 103 44 147 70.1 925 B 5 2 85 87 39.29 1158 75 92 167 44.9 925 B 5 2 95 97 39.39 1161 65 90 155 41.9 925 B 5 2 105 107 39.49 1164 39 58 97 40.2