# Prydz Bay, East Antarctica 36-33ma Biomarker Data and Climate Reconstructions #----------------------------------------------------------------------- # 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 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. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/32052 # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/tibbett2021/tibbett2021pollen.txt # Description: NOAA location of the template # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Data_Type: Pollen # # Dataset_DOI: # # Parameter_Keywords: population abundance #--------------------------------------- # Contribution_Date # Date: 2020-12-17 #--------------------------------------- # File_Last_Modified_Date # Date: 2020-12-17 #--------------------------------------- # Title # Study_Name: Prydz Bay, East Antarctica 36-33ma Biomarker Data and Climate Reconstructions #--------------------------------------- # Investigators # Investigators: Tibbett, E.J.; Scher, H.D.; Warny, S.; Tierney, J.E.; Passchier, S.; Feakins, S.J. #--------------------------------------- # Description_Notes_and_Keywords # Description: Biomarker and pollen data from 4 ODP cores collected in Prydz Bay, East Antarctica, for 36-33 million years BP, # plus SST and air temperature reconstructions. # Provided Keywords: Ocean Drilling Program; Expedition 119; Site 739; Site 742; Expedition 188; Site 1166; biomarkers # # Sample List for Pollen Samples (working half of core). # Composite depth based on Passchier et al. 2017. # # site Ocean Drilling Program Site # hole Ocean Drilling Program Site, Hole # core Ocean Drilling Program Site, Hole, Core # type Ocean Drilling Program drilling type # sect Ocean Drilling Program Site, Hole, Core, Section # w working half of core # top top offset (cm) within sect # bottom bottom offset (cm) within sect # code requestor code # depth_m Depth (meters) # mcd_m Composite depth (meters) # age_ma age # IODP_ID IODP sample identifier # # site hole core type sect w top bottom code depth_m mcd_m age_ma IODP_ID # 739 C 28 R 2 W 35 36 TIBBETT 204.365 204.365 32.926 119-739C-28R-2-W 35/36-TIBBETT # 739 C 29 R 3 W 63 64 TIBBETT 215.835 215.835 33.004 119-739C-29R-3-W 63/64-TIBBETT # 739 C 30 R 5 W 5 6 TIBBETT 227.855 227.855 33.085 119-739C-30R-5-W 5/6-TIBBETT # 739 C 31 R 3 W 73 74 TIBBETT 235.135 235.135 33.135 119-739C-31R-3-W 73/74-TIBBETT # 739 C 33 R 2 W 60 61 TIBBETT 252.805 252.805 33.255 119-739C-33R-2-W 60/61-TIBBETT # 739 C 33 R 6 W 73 74 TIBBETT 258.935 258.935 33.297 119-739C-33R-6-W 73/74-TIBBETT # 739 C 34 R 3 W 84 85 TIBBETT 264.245 264.245 33.333 119-739C-34R-3-W 84/85-TIBBETT # 739 C 35 R 3 W 4 5 TIBBETT 273.045 273.045 33.393 119-739C-35R-3-W 4/5-TIBBETT # 739 C 36 R 2 W 52 53 TIBBETT 281.725 281.725 33.452 119-739C-36R-2-W 52/53-TIBBETT # 739 C 36 R 5 W 62 63 TIBBETT 286.325 286.325 33.483 119-739C-36R-5-W 62/63-TIBBETT # 739 C 38 R 3 W 109 110 TIBBETT 302.995 302.995 33.596 119-739C-38R-3-W 109/110-TIBBETT # 739 C 39 R 1 W 117 118 TIBBETT 309.775 309.775 33.642 119-739C-39R-1-W 117/118-TIBBETT # 739 C 40 R 1 W 133 134 TIBBETT 319.535 319.535 33.709 119-739C-40R-1-W 133/134-TIBBETT # 739 C 41 R 3 W 18 19 TIBBETT 330.985 330.985 33.787 119-739C-41R-3-W 18/19-TIBBETT # 739 C 42 R 2 W 117 118 TIBBETT 340.175 340.175 33.849 119-739C-42R-2-W 117/118-TIBBETT # 739 C 46 R 2 W 4 5 TIBBETT 377.745 377.745 34.105 119-739C-46R-2-W 4/5-TIBBETT # 739 C 47 R 1 W 45 46 TIBBETT 386.355 386.355 34.163 119-739C-47R-1-W 45/46-TIBBETT # 739 C 48 R 1 W 125 126 TIBBETT 396.855 396.855 34.235 119-739C-48R-1-W 125/126-TIBBETT # 739 C 51 R 1 W 66 67 TIBBETT 425.165 425.165 34.427 119-739C-51R-1-W 66/67-TIBBETT # 739 C 56 R 1 W 25 26 TIBBETT 453.755 453.755 34.622 119-739C-56R-1-W 25/26-TIBBETT # 739 C 58 R 2 W 61 62 TIBBETT 465.315 465.315 34.700 119-739C-58R-2-W 61/62-TIBBETT # 739 C 60 R 1 W 32 33 TIBBETT 473.225 473.225 34.754 119-739C-60R-1-W 32/33-TIBBETT # 742 A 20 R 1 W 119 120 TIBBETT 172.495 483.925 34.827 119-742A-20R-1-W 119/120-TIBBETT # 742 A 20 R 2 W 68 69 TIBBETT 173.485 484.915 34.833 119-742A-20R-2-W 68/69-TIBBETT # 742 A 21 R 1 W 18 19 TIBBETT 181.185 492.615 34.886 119-742A-21R-1-W 18/19-TIBBETT # 742 A 21 R 3 W 45 46 TIBBETT 184.455 495.885 34.908 119-742A-21R-3-W 45/46-TIBBETT # 742 A 22 R 1 W 122 123 TIBBETT 191.925 503.355 34.959 119-742A-22R-1-W 122/123-TIBBETT # 742 A 26 R 1 W 37 38 TIBBETT 229.575 541.005 35.215 119-742A-26R-1-W 37/38-TIBBETT # 742 A 27 R 7 W 44 45 TIBBETT 248.245 559.675 35.342 119-742A-27R-7-W 44/45-TIBBETT # 742 A 29 R 6 W 78 79 TIBBETT 266.385 577.815 35.465 119-742A-29R-6-W 78/79-TIBBETT # 742 A 32 R 4 W 107 108 TIBBETT 292.675 604.105 35.644 119-742A-32R-4-W 107/108-TIBBETT # 742 A 33 R 6 W 48 49 TIBBETT 304.685 616.115 35.726 119-742A-33R-6-W 48/49-TIBBETT # 742 A 34 R 1 W 33 34 TIBBETT 306.635 618.065 35.739 119-742A-34R-1-W 33/34-TIBBETT # 1166 A 15 R 5 W 44 45 TIBBETT 138.995 618.985 35.731 188-1166A-15R-5-W 44/45-TIBBETT # 1166 A 16 R 2 W 86 87 TIBBETT 144.565 624.555 35.740 188-1166A-16R-2-W 86/87-TIBBETT # 1166 A 16 R 3 W 29 30 TIBBETT 145.495 625.485 35.741 188-1166A-16R-3-W 29/30-TIBBETT # 1166 A 17 R 1 W 13 14 TIBBETT 151.535 631.525 35.750 188-1166A-17R-1-W 13/14-TIBBETT # 1166 A 17 R 3 W 114 115 TIBBETT 155.545 635.535 35.756 188-1166A-17R-3-W 114/115-TIBBETT # 1166 A 18 R 1 W 11 12 TIBBETT 161.115 641.105 35.765 188-1166A-18R-1-W 11/12-TIBBETT # #--------------------------------------- # Publication # Authors: Tibbett, Emily J., Howie D. Scher, Sophie Warny, Jessica E. Tierney, Sandra Passchier, Sarah J. Feakins # Published_Date_or_Year: 2021 # Published_Title: Late Eocene Record of Hydrology and Temperature From Prydz Bay, East Antarctica # Journal_Name: Paleoceanography and Paleoclimatology # Volume: 36 # Edition: # Issue: # Pages: # Report_Number: e2020PA004204 # DOI: 10.1029/2020PA004204 # Online_Resource: # Full_Citation: # Abstract: The Eocene-Oligocene Transition (EOT) marks the onset of Antarctic glaciation at 33.7 Ma. Although the benthic d18O record defines the major continental ice sheet expansion, recent sedimentary and geochemical evidence suggests the presence of earlier ephemeral ice sheets. Sediment cores from Ocean Drilling Program (ODP) Legs 119 and 188 in Prydz Bay provide an archive of conditions in a major drainage system of East Antarctica. We study biomarker and microfossil evidence to discern how the vegetation and climate shifted between 36-33 Ma. Pollen were dominated by reworked Permian Glossopterid gymnosperms; however, penecontemporaneous Eocene pollen assemblages indicate that vegetation such as moss, ferns, southern beech and podocarp trees grew in the region and survived the glacial advances suggesting some non-glaciated land. At the EOT, brGDGT soil biomarkers indicate abrupt cooling from 13-8C and soil pH increases from 6.0 to 6.7, suggesting drying. The biomarker proxies record cooling in under 50 ka, compared to the gradual trend detected by weathering proxies. Plant wax dD and d13C show further evidence for drying with shifts of 20 per mil and 1.1 per mil respectively across the EOT. Although the terrestrial soil biomarker influx mostly precludes use of TEX86, a few determinations find sea surface temperatures of 12C in the late Eocene cooling to 8C at the EOT. Marine productivity undergoes a sustained increase after the glacial advance, whether promoted by glacial nutrient flux and/or enhanced overturning circulation. Between the two glacial surge events of the Priabonian Oxygen Maximum (PrOM) at 37.3 Ma and the EOT at 33.7 Ma, we observe three warm events at 35.8, 34.9 and 34.7 Ma with a rise in temperature of 2-5C and increases in penecontemporaneous pollen and enhanced marine productivity, capturing the last flickers of Antarctic warmth before almost complete glaciation at the EOT. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: OPP-1908548 #--------------------------------------- # Site_Information # Site_Name: ODP 739, 742, 1166 composite # Location: Ocean>Southern Ocean # Country: # Northernmost_Latitude: -67.5 # Southernmost_Latitude: -67.5 # Easternmost_Longitude: 75.1 # Westernmost_Longitude: 75.1 # Elevation: #--------------------------------------- # Data_Collection # Collection_Name: Tibbett2021pollen # First_Year: 35765000 # Last_Year: 32926000 # Time_Unit: cal yr BP # Core_Length: 500 # Notes: #--------------------------------------- # Chronology_Information # Chronology: Age model for Sites 739, 742, and 1166 is from Passchier et al., 2017 on the GPTS2012 timescale # # site ODP Site # hole ODP Hole # core ODP core # type ODP type W=working half of core # sect ODP core section # top top offset (cm) within section # bottom bottom offset (cm) within section # depth_m mcd in meters # age_ma Age model for Sites 739, 742, and 1166 is from Passchier et al., 2017 on the GPTS2012 timescale # type datum type CN = nannofossil, PAL=dinoflagellate, MR = magnetostratigraph # Event event datum - bottom (B) or top (T) of a species, or a named magnetic timeperiod. # # site hole core type sect top bottom depth_m age_ma type Event # 739 C 38 W 1 35 37 299.26 33.6 CN B Reticulofenestra daviesii # 739 C 39 W 2 62 64 310.73 33.6 PAL B Malvinia escutiana # 1166 A 15 W 3 18 19 616.31 35.71 MR C15r # 1166 A 15 W 3 76 78 627.99 35.8 MR C16n.1n # 1166 A 26 W 1 30 32 718.19 35.895 PAL B Deflandrea sp. A sensu # #--------------------------------------- # 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) # ## IODP_ID sample identification,,,,,Paleoceanography,,,C,IODP sample identifier ## depth_m depth,,,meter,,Paleoceanography,,,N,Depth below seafloor ## mcd_m depth,,,meter,,Paleoceanography,,,N,Composite depth for all cores ## age_ma age,,,millions of years,,Paleoceanography,,,N,on the GPTS2012 timescale ## poll_insitu pollen,sediment,,count per gram,,Paleoceanography,,microscopy,N,penecontemporary pollen counts ## poll_rew pollen,sediment,,count per gram,,Paleoceanography,,microscopy,N,reworked pollen counts ## poll_Noth pollen,sediment,,percent,,Paleoceanography,,microscopy,N,Nothofagus pollen as a fraction of in situ ## poll_Spores pollen,sediment,,percent,,Paleoceanography,,microscopy,N,Spores as a fraction of in situ ## poll_Gymno pollen,sediment,,percent,,Paleoceanography,,microscopy,N,Gymnosperm pollen as a fraction of in situ ## poll_other pollen,sediment,,percent,,Paleoceanography,,microscopy,N,Other angiosperm pollen as a fraction of in situ ## comment notes,sediment,,,,Paleoceanography,,microscopy,C,Comment, additional qualitative observations # #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: 999999 IODP_ID depth_m mcd_m age_ma poll_insitu poll_rew poll_Noth poll_Spores poll_Gymno poll_other comment 119-739C-28R-2-W 35/36-TIBBETT 204.365 204.365 32.926 572 1233 47 16 31 5 119-739C-29R-3-W 63/64-TIBBETT 215.835 215.835 33.004 1000 2093 54 15 27 4 119-739C-30R-5-W 5/6-TIBBETT 227.855 227.855 33.085 570 5905 64 11 18 7 119-739C-31R-3-W 73/74-TIBBETT 235.135 235.135 33.135 329 5107 63 5 21 11 119-739C-33R-2-W 60/61-TIBBETT 252.805 252.805 33.255 909 4454 71 6 22 2 119-739C-33R-6-W 73/74-TIBBETT 258.935 258.935 33.297 514 4158 41 6 47 6 119-739C-34R-3-W 84/85-TIBBETT 264.245 264.245 33.333 314 8430 27 45 18 9 119-739C-35R-3-W 4/5-TIBBETT 273.045 273.045 33.393 502 7952 56 17 28 0 119-739C-36R-2-W 52/53-TIBBETT 281.725 281.725 33.452 350 6887 80 0 13 7 119-739C-36R-5-W 62/63-TIBBETT 286.325 286.325 33.483 211 12647 60 20 20 0 119-739C-38R-3-W 109/110-TIBBETT 302.995 302.995 33.596 271 11602 86 0 0 14 119-739C-39R-1-W 117/118-TIBBETT 309.775 309.775 33.642 292 2680 73 3 20 3 119-739C-40R-1-W 133/134-TIBBETT 319.535 319.535 33.709 389 7289 69 0 19 13 119-739C-41R-3-W 18/19-TIBBETT 330.985 330.985 33.787 593 3461 45 11 43 0 119-739C-42R-2-W 117/118-TIBBETT 340.175 340.175 33.849 581 5250 63 0 30 7 119-739C-46R-2-W 4/5-TIBBETT 377.745 377.745 34.105 150 4924 22 11 56 11 119-739C-47R-1-W 45/46-TIBBETT 386.355 386.355 34.163 929 3209 22 22 47 9 119-739C-48R-1-W 125/126-TIBBETT 396.855 396.855 34.235 381 4054 54 12 27 8 119-739C-51R-1-W 66/67-TIBBETT 425.165 425.165 34.427 703 5588 63 3 26 9 119-739C-56R-1-W 25/26-TIBBETT 453.755 453.755 34.622 1110 1726 51 13 24 12 119-739C-58R-2-W 61/62-TIBBETT 465.315 465.315 34.700 3463 3533 64 2 28 6 119-739C-60R-1-W 32/33-TIBBETT 473.225 473.225 34.754 1010 2537 57 6 27 11 119-742A-20R-1-W 119/120-TIBBETT 172.495 483.925 34.827 128 862 100 0 0 0 abundant coal or charcoal microfossils 119-742A-20R-2-W 68/69-TIBBETT 173.485 484.915 34.833 1306 7548 49 7 38 7 119-742A-21R-1-W 18/19-TIBBETT 181.185 492.615 34.886 314 3844 30 30 39 0 119-742A-21R-3-W 45/46-TIBBETT 184.455 495.885 34.908 672 5334 47 3 41 9 119-742A-22R-1-W 122/123-TIBBETT 191.925 503.355 34.959 1844 6218 51 7 34 7 119-742A-26R-1-W 37/38-TIBBETT 229.575 541.005 35.215 786 7210 40 7 47 7 119-742A-27R-7-W 44/45-TIBBETT 248.245 559.675 35.342 738 7654 37 7 44 11 119-742A-29R-6-W 78/79-TIBBETT 266.385 577.815 35.465 328 4623 50 20 25 5 119-742A-32R-4-W 107/108-TIBBETT 292.675 604.105 35.644 398 4404 48 20 24 8 119-742A-33R-6-W 48/49-TIBBETT 304.685 616.115 35.726 2169 6010 55 5 34 6 119-742A-34R-1-W 33/34-TIBBETT 306.635 618.065 35.739 12236 10707 36 12 48 5 188-1166A-15R-5-W 44/45-TIBBETT 138.995 618.985 35.731 10541 3069 76 0 20 4 188-1166A-16R-2-W 86/87-TIBBETT 144.565 624.555 35.740 9413 6004 63 1 30 5 188-1166A-16R-3-W 29/30-TIBBETT 145.495 625.485 35.741 7057 1461 84 2 12 3 188-1166A-17R-1-W 13/14-TIBBETT 151.535 631.525 35.750 9607 1122 80 1 15 3 188-1166A-17R-3-W 114/115-TIBBETT 155.545 635.535 35.756 2807 10744 48 6 39 6 188-1166A-18R-1-W 11/12-TIBBETT 161.115 641.105 35.765 1380 1319 70 6 18 6