# Gulf of California Foraminifera and Wood 14C Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # 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: https://www.ncdc.noaa.gov/paleo/study/25650 # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/rafter2018/rafter2018-lpaz-21p.txt # Description: URL of this template file # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Data_Type: Paleoceanography # # Dataset_DOI: # # Parameter_Keywords: carbon isotopes #-------------------- # Contribution_Date # Date: 2018-11-23 #-------------------- # File_Last_Modified_Date # Date: 2018-11-23 #-------------------- # Title # Study_Name: Gulf of California Foraminifera and Wood 14C Data #-------------------- # Investigators # Investigators: Rafter, Patrick A.; Herguera, Juan-Carlos; Southon, John R. #-------------------- # Description_Notes_and_Keywords # Description: marine sediment microfossil (foraminifera) and wood 14C content (radiocarbon) #-------------------- # Publication # Authors: Rafter, Patrick A., Juan-Carlos Herguera, and John R. Southon # Published_Date_or_Year: 2018 # Published_Title: Extreme lowering of deglacial seawater radiocarbon recorded by both epifaunal and infaunal benthic foraminifera in a wood-dated sediment core # Journal_Name: Climate of the Past # Volume: in review # Edition: # Issue: # Pages: # Report_Number: # DOI: 10.5194/cp-2018-75 # Online_Resource: # Full_Citation: # Abstract: For over a decade, oceanographers have debated the interpretation and reliability of sediment microfossil records indicating extremely low seawater radiocarbon (14C) during the last deglaciation-observations that suggest a major disruption in marine carbon cycling coincident with rising atmospheric CO2 concentrations. Possible flaws in these records include poor age model controls, utilization of mixed, infaunal foraminifera species possibly influenced by changing porewater chemistry, and bioturbation. We have addressed these concerns using a glacial-interglacial record of epifaunal benthic foraminifera 14C on an ideal sedimentary age model (wood calibrated to atmosphere 14C). Our results affirm – with important caveats – the fidelity of these microfossil archives and confirm previous observations of highly depleted seawater 14C at intermediate depths in the deglacial northeast Pacific. #------------------ # Funding_Agency # Funding_Agency_Name: # Grant: #------------------ # Site_Information # Site_Name: LPAZ-21P # Location: Eastern Pacific Ocean # Country: # Northernmost_Latitude: 22.98 # Southernmost_Latitude: 22.98 # Easternmost_Longitude: -109.4667 # Westernmost_Longitude: -109.4667 # Elevation: -624 #------------------ # Data_Collection # Collection_Name: LPAZ-21P 14C Rafter2018 # Earliest_Year: 33070 # Most_Recent_Year: 5670 # Time_Unit: 14C yr BP # Core_Length: 2 # Notes: wood 14C age, constrained by atmospheric 14C via IntCal13 #------------------ # Chronology_Information # Chronology: # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # *** MORE DETAILED INSTRUCTIONS are available at www1.ncdc.noaa.gov/pub/data/paleo/templates/Variable_naming_guide.pdf # variables format: shortname what, material, error, units, seasonality, data_type, detail, method, data_format, additional_information) # ## labcode sample identification,,, ,,paleoceanography,,,N,code used to identify AMS measurement ## depth_top depth at sample end,,,centimeter,,paleoceanography,,,N,the youngest end of the sample ## depth_bot depth at sample start, , , centimeter,,paleoceanography,,,N,the oldest end of the sample ## mat_dated notes,,, ,,paleoceanography,,,N,material dated for 14C age ## 14C_age age,,,radiocarbon year before present,,paleoceanography , ,,N,radiocarbon age ## 14C_age_err age, ,one standard deviation,radiocarbon year, ,paleoceanography , ,,N,radiocarbon age ## notes notes,,,,,,,,C, # #---------------- # Data: # Missing_Values: NA labcode depth_top depth_bot mat_dated 14C_age 14C_age_err notes 157546 2.0 3.0 Bolivina spp. 5670 60 162172 63.0 65.0 Bolivina spp. 17980 710 173600 69.0 70.5 Bolivina spp. 14610 180 173602 74.0 76.0 Bolivina spp. 17200 70 175792 77.0 79.0 Bolivina spp. 18400 90 173604 79.0 81.0 Bolivina spp. 16970 70 173606 84.5 85.5 Bolivina spp. 17880 150 175805 90.0 92.0 Bolivina spp. 18260 310 190597 94.0 95.0 Bolivina spp. 18660 90 162173 63.0 65.0 Planulina ariminensis 15620 100 178177 66.0 67.0 Planulina ariminensis 16880 650 206073 67.0 68.0 Planulina ariminensis 16555 45 206075 68.0 69.0 Planulina ariminensis 14330 60 175820 69.0 70.5 Planulina ariminensis 15120 90 203474 70.5 71.5 Planulina ariminensis 15375 45 203476 71.5 72.5 Planulina ariminensis 15395 40 203478 72.0 73.0 Planulina ariminensis 17080 330 203480 73.0 74.0 Planulina ariminensis 16110 70 181567 74.0 76.0 Planulina ariminensis 15965 45 204764 75.0 76.0 Planulina ariminensis 15660 35 203058 77.0 78.0 Planulina ariminensis 16775 45 175789 77.0 79.0 Planulina ariminensis 16760 70 206076 78.0 79.0 Planulina ariminensis 17020 60 181535 79.0 81.0 Planulina ariminensis 16550 45 206078 80.0 81.0 Planulina ariminensis 15920 100 175800 82.0 84.0 Planulina ariminensis 17520 80 178190 84.5 85.5 Planulina ariminensis 16640 140 181548 85.5 87.0 Planulina ariminensis 17760 60 181536 87.0 87.5 Planulina ariminensis 17615 50 201575 87.5 88.0 Planulina ariminensis 17350 70 201577 88.0 89.0 Planulina ariminensis 17610 60 183754 89.0 90.0 Planulina ariminensis 18140 60 203049 90.0 91.0 Planulina ariminensis 18190 450 201581 91.0 92.0 Planulina ariminensis 19220 450 201583 92.0 93.0 Planulina ariminensis 16800 70 181538 92.0 94.0 Planulina ariminensis 16805 45 201588 93.0 94.0 Planulina ariminensis 16530 60 192493 94.0 95.0 Planulina ariminensis 16960 100 181551 96.0 97.0 Planulina ariminensis 20240 70 200178 97.0 98.0 Planulina ariminensis 19580 670 178194, 181540 97.0 99.0 Planulina ariminensis 20197 263 200181 98.0 99.0 Planulina ariminensis 20240 260 200525 99.0 100.0 Planulina ariminensis 20490 160 200527 100.0 101.0 Planulina ariminensis 20630 120 181554 101.0 102.0 Planulina ariminensis 20630 80 176294 104.0 106.0 Planulina ariminensis 21520 80 201590 110.0 111.0 Planulina ariminensis 22660 90 204773 114.0 115.0 Planulina ariminensis 25490 80 204776 115.0 116.0 Planulina ariminensis 25590 100 206080 116.0 117.0 Planulina ariminensis 27020 190 176296 116.0 118.0 Planulina ariminensis 26540 410 206085 117.0 118.0 Planulina ariminensis 26190 160 177324 119.0 120.0 Planulina ariminensis 27410 780 176317 122.0 124.0 Planulina ariminensis 28440 420 157545 2.0 3.0 Trifarina bradyi 5955 40 160284 22.0 24.0 Trifarina bradyi 7215 20 176716 42.0 44.0 Trifarina bradyi 8360 140 176719 46.0 48.0 Trifarina bradyi 9320 120 176722 61.0 63.0 Trifarina bradyi 9265 30 178176 63.0 65.0 Trifarina bradyi 12205 30 175263 66.0 67.0 Trifarina bradyi 15150 280 178181 67.0 69.0 Trifarina bradyi 13600 50 175266 69.0 70.5 Trifarina bradyi 14030 110 175267 72.0 74.0 Trifarina bradyi 15600 60 175269 74.0 76.0 Trifarina bradyi 15340 70 175791 77.0 79.0 Trifarina bradyi 15800 45 175250 79.0 81.0 Trifarina bradyi 14540 70 175253 84.5 85.5 Trifarina bradyi 14600 60 175254 87.0 87.5 Trifarina bradyi 15720 90 175239 90.0 92.0 Trifarina bradyi 18130 80 175241 92.0 94.0 Trifarina bradyi 16660 80 176728 102.0 104.0 Trifarina bradyi 20940 120 176297 116.0 118.0 Trifarina bradyi 26650 470 157540, 157542, 157543 2.0 3.0 Uvigerina peregrina 5832 58 160284 22.0 24.0 Uvigerina peregrina 7215 20 160293, 176715 42.0 44.0 Uvigerina peregrina 8425 23 176718 46.0 48.0 Uvigerina peregrina 9185 25 176280 48.0 50.0 Uvigerina peregrina 8865 35 176282 52.0 55.0 Uvigerina peregrina 9075 35 176284, 181565 57.0 59.0 Uvigerina peregrina 9078 30 176721 61.0 63.0 Uvigerina peregrina 9370 25 162170, 161631 63.0 65.0 Uvigerina peregrina 14105 48 178178 66.0 67.0 Uvigerina peregrina 15210 45 178180 67.0 69.0 Uvigerina peregrina 14360 150 178182 69.0 70.5 Uvigerina peregrina 14870 170 203475 70.5 71.5 Uvigerina peregrina 15705 35 203477 71.5 72.5 Uvigerina peregrina 16075 40 203479 72.0 73.0 Uvigerina peregrina 16575 45 203481 73.0 74.0 Uvigerina peregrina 16830 50 181566 74.0 76.0 Uvigerina peregrina 17740 60 175790 77.0 79.0 Uvigerina peregrina 17640 60 178188 79.0 81.0 Uvigerina peregrina 15720 150 178777 82.0 84.0 Uvigerina peregrina 17620 70 181568 84.5 85.5 Uvigerina peregrina 16935 45 181547 85.5 87.0 Uvigerina peregrina 18300 50 181537 87.0 87.5 Uvigerina peregrina 17495 50 203046 87.5 88.0 Uvigerina peregrina 16755 40 203047 88.0 89.0 Uvigerina peregrina 18430 70 183755 89.0 90.0 Uvigerina peregrina 15895 40 203048 90.0 91.0 Uvigerina peregrina 18390 45 196212 90.0 92.0 Uvigerina peregrina 18175 50 203050 91.0 92.0 Uvigerina peregrina 18940 60 203051 92.0 93.0 Uvigerina peregrina 17770 45 181539 92.0 94.0 Uvigerina peregrina 17535 45 203052 93.0 94.0 Uvigerina peregrina 17980 50 178191 94.0 95.0 Uvigerina peregrina 17330 160 181550 96.0 97.0 Uvigerina peregrina 19630 70 200179 97.0 98.0 Uvigerina peregrina 20050 130 178193 97.0 99.0 Uvigerina peregrina 20280 310 200182 98.0 99.0 Uvigerina peregrina 19820 80 200526 99.0 100.0 Uvigerina peregrina 20560 90 200528 100.0 101.0 Uvigerina peregrina 20510 120 181553 101.0 102.0 Uvigerina peregrina 20600 70 176727 102.0 104.0 Uvigerina peregrina 21030 70 176292 104.0 106.0 Uvigerina peregrina 22100 190 176733 111.0 112.0 Uvigerina peregrina 22740 100 176295 116.0 118.0 Uvigerina peregrina 26820 330 177323 119.0 120.0 Uvigerina peregrina 27870 300 176318 & 160286 122.0 124.0 Uvigerina peregrina 28945 210 175262 63.0 65.0 Globogerina bulloides 13390 100 175264 66.0 67.0 Globogerina bulloides 15730 270 173605 84.5 85.5 Globogerina bulloides 15920 110 175255 87.0 87.5 Globogerina bulloides 16910 340 201576 & 203057 87.5 88.0 Globogerina bulloides 16210 75 201587 92.0 93.0 Globogerina bulloides 16520 120 175240 92.0 94.0 Globogerina bulloides 16650 160 201589 93.0 94.0 Globogerina bulloides 16210 100 175242 94.0 95.0 Globogerina bulloides 17060 110 181552 96.0 97.0 Globogerina bulloides 19660 70 200177 97.0 98.0 Globogerina bulloides 19470 70 175257 102.0 104.0 Globogerina bulloides 20970 190 176293 104.0 106.0 Globogerina bulloides 21810 210 201591 110.0 111.0 Globogerina bulloides 22780 140 176316 116.0 118.0 Globogerina bulloides 25520 320 203485 130.0 131.0 Globogerina bulloides 33070 180 181559 63.0 65.0 terrestrial wood 10440 550 176735 66.0 67.0 terrestrial wood 11065 30 181561 87.0 87.5 terrestrial wood 13590 160 201569 87.5 88.0 terrestrial wood 14390 190 201571 92.0 93.0 terrestrial wood 15830 720 200534 94.0 95.0 terrestrial wood 16170 90 181562 96.0 97.0 terrestrial wood 18820 70 180071 97.0 99.0 terrestrial wood 19120 880 180639 102.0 104.0 terrestrial wood 19550 60 180073 104.0 106.0 terrestrial wood 20690 330 182086 110.0 111.0 terrestrial wood 21590 330 199135 116.0 118.0 terrestrial wood 24020 790 177377 130.0 131.0 terrestrial wood 30400 270 181558 57.0 59.0 terrestrial wood 25660 130 Rejected. Does not pass 14C comparison test. 181560 84.5 85.5 terrestrial wood 15890 45 Rejected. Does not pass 14C comparison test. 180070 92.0 94.0 terrestrial wood 16760 190 Rejected. Does not pass 14C comparison test. 201572 93.0 94.0 terrestrial wood 17870 480 Rejected. Does not pass 14C comparison test. 182085 108.0 109.5 terrestrial wood 15920 210 Rejected. Possible zoophycos (or depth labeling error).