# Western Kentucky LGM Peoria Loess Gastropod Data and July Temperature #----------------------------------------------------------------------- # 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/34072 # Description: NOAA Landing Page # Online_Resource: https://www.ncei.noaa.gov/pub/data/paleo/loess/peoria/rocks2020-iso-vert-succ.txt # Description: NOAA location of the template # # Data_Type: Loess # # Dataset_DOI: # # Parameter_Keywords: #--------------------------------------- # Contribution_Date # Date: 2021-08-31 #--------------------------------------- # File_Last_Modified_Date # Date: 2021-08-31 #--------------------------------------- # Title # Study_Name: Western Kentucky LGM Peoria Loess Gastropod Data and July Temperature #--------------------------------------- # Investigators # Investigators: Grimley, D.A.; Counts, R.C.; Conroy, J.L.; Wang, H.; Dendy, S.N.; Nield, C.B. #--------------------------------------- # Description_Notes_and_Keywords # Description: Terrestrial gastropod assemblage and stable isotope (d13C, d18O) data and July temperature estimates from Peoria Loess of The Rocks section, western Kentucky, for the Last Glacial Maximum (~30-24ka). # Provided Keywords: gastropods, terrestrial, radiocarbon, isotopes #--------------------------------------- # Publication # Authors: David A. Grimley, Ronald C. Counts, Jessica L. Conroy, Hong Wang, Sarah N. Dendy, Catherine B. Nield # Published_Date_or_Year: 2020-07-01 # Published_Title: Last glacial maximum ecology and climate from terrestrial gastropod assemblages in Peoria loess, western Kentucky # Journal_Name: Journal of Quaternary Science # Volume: 35 # Edition: # Issue: 5 # Pages: 650-663 # Report_Number: # DOI: 10.1002/jqs.3206 # Online_Resource: https://onlinelibrary.wiley.com/doi/10.1002/jqs.3206 # Full_Citation: # Abstract: The Rocks loess section, in unglaciated western Kentucky, provides a high-resolution environmental record during the last glacial maximum onset. The Peoria Silt (9 m thick) contains 26 terrestrial gastropod species, with up to 15 species within a single 5 cm interval. Thirteen radiocarbon ages, using shells or charcoal, range between 30 and 24.5 cal ka; younger loess has been leached or eroded. Stratigraphic shifts in gastropod assemblages imply significant cooling, particularly ~27 cal ka, as solar insolation was decreasing and the southern Laurentide Ice Sheet rapidly advancing. Midwestern to southern species (e.g. Anguispira kochi, Gastrocopta pentodon, Hawaii miniscula, Helicodiscus parallelus, Vallonia perspectiva) occur only in the lowermost Peoria Silt (~30-27 cal ka). In contrast, cold-tolerant species (Columella alticola, Vertigo modesta, Vallonia gracilicosta) occur only in full glacial Peoria Silt (27-24.5 cal ka). Inferred mean July temperatures, from mutual climatic range methods, range from ~23C at 30 cal ka, cooling to ~18C by 26 cal ka; about 3-8C cooler than today (~26C). Superimposed on this cooling trend are multi-centennial variations in detrital carbonate, fossil shell concentrations, palaeotemperature estimates, and oxygen isotope values (Vertigo, Discus, Helicodiscus). The finer-scale variations imply relatively synchronous fluctuations in glacial sediment supply, loess sedimentation, and climate. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: NSF-GLD 16-37481 #--------------------------------------- # Site_Information # Site_Name: Rocks Section # Location: North America>United States Of America>Kentucky # Northernmost_Latitude: 37.67708 # Southernmost_Latitude: 37.67708 # Easternmost_Longitude: -88.09786 # Westernmost_Longitude: -88.09786 # Elevation: 135 #--------------------------------------- # Data_Collection # Collection_Name: Rocks2020-iso-VertSucc # First_Year: 29772 # Last_Year: 24523 # Time_Unit: cal. yr BP # Core_Length: # Notes: Stable isotope data from Vertigo and Succineidae gastropods. Rocks Section A and B (composite section based on 2 outcrops about 22 m apart); Section B (37.67700N, 88.09780W); Section A (37.67717N, 88.09792W) #--------------------------------------- # Chronology_Information # Chronology: # # ISGS# ISGS laboratory sample number for radiocarbon age # Sample Name name of sample from field bag # Depth (cm); Section A equivalent equivalent depth (cm below top of Section A) in Section A units (converted for Section B) # Geologic Unit lithostratigraphic unit (last glacial loess unit) # Material (with gastropod genera) material dated (shell or charcoal); with gastropod genera indicated # d13C carbon-13 isotope anomaly (two samples did not have enough mass for this measurement) # 14C ka BP age in radiocarbon years # ± one sigma error for radiocarbon date # cal yr BP age in calibrated radiocarbon years; using IntCal13 calibration curve (Reimer et al., 2013) # ± one sigma error for calibrated radiocarbon date # # ISGS # Sample Name Depth [cm]; Section A equivalent Geologic Unit Material (w/gastropod genera) d13C 14C ka BP ± cal yr BP ± # A3984 RocksA-182.5 cm 182.5 Peoria Silt Discus shell -- 21190 150 25530 170 # A3151 RocksA-217.5 cm 217.5 Peoria Silt Discus shell -6 20590 130 24800 225 # A3985 RocksA-292.5 cm 292.5 Peoria Silt Discus shell -6.8 21020 150 25370 175 # A3152 RocksA-352.5 cm 352.5 Peoria Silt Discus shell -4.9 21860 110 26070 125 # A3153 RocksA-412.5 cm 412.5 Peoria Silt Discus shell -6 21950 110 26150 125 # A4621 RocksA-462.5 cm (H) 462.5 Peoria Silt Hendersonia shell -6 21310 50 25660 80 # A4622 RocksA-462.5 cm (D) 462.5 Peoria Silt Discus shell -5 22700 70 27080 150 # A3986 RocksA-502.5 cm 502.5 Peoria Silt Discus shell -- 23390 200 27590 150 # A3154 RocksA-592.5 cm 592.5 Peoria Silt Stenotrema shell -6.2 23970 160 28020 175 # A4623 RocksA-637.5 cm 637.5 Peoria Silt Hendersonia shell 6 23580 70 27710 80 # A1184 RocksB-2.75 m 710 Peoria Silt charcoal -22.1 24880 110 28900 150 # A3155 RocksB-3.075 m 742.5 Peoria Silt -Roxana Silt transition Stenotrema shell -8.8 25740 200 29950 300 # A4620 RocksB-3.475 m 782.5 Peoria Silt -Roxana Silt transition Stenotrema shell -8.8 25790 80 30000 200 # #--------------------------------------- # 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) # ## SampleID sample identification,,,,,loess and paleosol,,,C, ## Depth depth,,,meter,,loess and paleosol,,,N, ## Age age,,,calendar year before present,,loess and paleosol,,,N,Bayesian age model;calibrated years before 1950 ## Species identified gastropod,,,,,loess and paleosol,,,C,Gastropod species (terrestrial) ## ISGS# sample identification,,,,,loess and paleosol,,,C,ISGS stable isotope laboratory number ## d13CVPDB delta 13C,gastropod,,per mil VPDB,,loess and paleosol,anomalized,isotope ratio mass spectrometry,N,spring and summer ## d13CVPDBcorr delta 13C,gastropod,,per mil VPDB,,loess and paleosol,anomalized;corrected, isotope ratio mass spectrometry,N,corrected for species differences; subtracted 0.5 from V. modesta values to compare with V. hubrichti; spring and summer ## d13C+/- delta 13C,gastropod,one standard deviation,per mil VPDB,,loess and paleosol,anomalized,,N,spring and summer ## d18OVPDB* delta 18O,gastropod,,per mil VPDB,,loess and paleosol,anomalized,isotope ratio mass spectrometry,N,spring and summer ## d18OVPDB*corr delta 18O,gastropod,,per mil VPDB,,loess and paleosol,anomalized;corrected,isotope ratio mass spectrometry,N,corrected for species differences; subtracted 0.7 from V. modesta values to compare with V. hubrichti; spring and summer ## d18O+/- delta 18O,gastropod,one standard deviation,per mil VPDB,,loess and paleosol,anomalized,,N,spring and summer ## Method notes,,,,,loess and paleosol,,,C,method used with isotope ratio mass spectrometer; KIEL = Kiel III Carbonate Device coupled to Finnigan MAT 252; BENCH = ThermoFinnigan GasBench II in-line with a Thermo Fisher Scientific Delta V Advantage isotope ratio mass spectrometer ## Comments Notes,,,,,loess and paleosol,,,C,Notes concerning duplicates ## Comp-d13C notes,,,,,loess and paleosol,,,C, V.modesta-V.hubrichti d13C comparison ## Comp-d18O notes,,,,,loess and paleosol,,,C, V.modesta-V.hubrichti d18O comparison ## CorrNotes notes,,,,,loess and paleosol,,,C, V. modesta: correction calculations #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: -999 SampleID Depth Age Species ISGS# d13CVPDB d13CVPDBcorr d13C+/- d18OVPDB d18OVPDBcorr d18O+/- Method Comments Comp-d13C Comp-d18O CorrNotes RS180Vm 1.825 24523 Vertigo modesta KL020126 -7.73 -8.23 -999 -0.32 -1.02 -999 KIEL RS185Vm 1.875 24564 Vertigo modesta KL020127 -8.40 -8.90 -999 -0.87 -1.57 -999 KIEL duplicates averaged RS190Vm 1.925 24605 Vertigo modesta KL020128 -7.89 -8.39 -999 -0.51 -1.21 -999 KIEL RS195Vh 1.975 24648 Vertigo hubrichti KL020129 -8.35 -8.35 -999 -0.58 -0.58 -999 KIEL RS210Ve 2.125 24778 Vertigo gouldii KL020130 -8.01 -8.01 -999 -1.12 -1.12 -999 KIEL V. modesta - V. hubrichti (d18O) RS215Ve 2.175 24821 Vertigo gouldii KL020132 -7.24 -7.24 -999 -1.19 -1.19 -999 KIEL RS220Vm 2.225 24864 Vertigo modesta KL020134 -6.92 -7.42 -999 -0.97 -1.67 -999 KIEL RS225Vm 2.275 24907 Vertigo modesta KL020136 -8.34 -8.84 -999 -0.05 -0.75 -999 KIEL 0.7 RS230Vm 2.325 24949 Vertigo modesta KL020137 -7.56 -8.06 -999 -1.10 -1.80 -999 KIEL RS235Vm 2.375 24993 Vertigo modesta KL020138 -7.56 -8.06 -999 -0.25 -0.95 -999 KIEL RS240Vm 2.425 25036 Vertigo modesta KL020147 -8.00 -8.50 -999 0.93 0.23 -999 KIEL duplicates averaged -0.5 1.7 V. modesta - V. hubrichti (d13C) RS240Vh 2.425 25036 Vertigo hubrichti KL020140 -7.47 -7.47 -999 -0.73 -0.73 -999 KIEL RS245Vh 2.475 25078 Vertigo hubrichti KL020141 -7.75 -7.75 -999 -0.72 -0.72 -999 KIEL RS250Vm 2.525 25121 Vertigo modesta KL020142 -7.41 -7.91 -999 0.12 -0.58 -999 KIEL 0.9 0.7 0.5 RS250Vh 2.525 25121 Vertigo hubrichti KL020143 -8.28 -8.28 -999 -0.61 -0.61 -999 KIEL RS255Vm 2.575 25164 Vertigo modesta KL020145 -7.49 -7.99 -999 -0.78 -1.48 -999 KIEL RS260Vm 2.625 25207 Vertigo modesta KL020146 -7.00 -7.50 -999 -1.00 -1.70 -999 KIEL RS265Vm 2.675 25249 Vertigo modesta KL020148 -6.96 -7.46 -999 -0.35 -1.05 -999 KIEL RS270Vm 2.725 25293 Vertigo modesta KL020549 -7.59 -8.09 -999 -0.45 -1.15 -999 KIEL RS275Vm 2.775 25336 Vertigo modesta KL020149 -7.69 -8.19 -999 -0.92 -1.62 -999 KIEL RS280Vm 2.825 25380 Vertigo modesta KL020150 -7.50 -8.00 -999 -0.06 -0.76 -999 KIEL 0.7 0.5 RS280Vh 2.825 25380 Vertigo hubrichti KL020151 -8.20 -8.20 -999 -0.59 -0.59 -999 KIEL RS285Vh 2.875 25424 Vertigo hubrichti KL020550 -8.14 -8.14 -999 0.10 0.10 -999 KIEL RS290Vh 2.925 25468 Vertigo hubrichti KL020551 -7.45 -7.45 -999 -0.70 -0.70 -999 KIEL RS295Vh 2.975 25512 Vertigo hubrichti KL020552 -8.57 -8.57 -999 0.12 0.12 -999 KIEL RS325Vh 3.275 25787 Vertigo hubrichti KL020554 -8.26 -8.26 -999 -0.70 -0.70 -999 KIEL duplicates averaged RS330Vm 3.325 25833 Vertigo modesta KL020555 -8.73 -9.23 -999 -1.46 -2.16 -999 KIEL RS335Vm 3.375 25880 Vertigo modesta KL020556 -6.96 -7.46 -999 -0.31 -1.01 -999 KIEL 0.6 0.0 RS335Vh 3.375 25880 Vertigo hubrichti KL020557 -7.55 -7.55 -999 -0.35 -0.35 -999 KIEL RS340Vm 3.425 25926 Vertigo modesta KL020585 -7.30 -7.80 -999 -0.38 -1.08 -999 KIEL RS345Vm 3.475 25970 Vertigo modesta KL020560 -7.56 -8.06 -999 -0.87 -1.57 -999 KIEL RS350Vm 3.525 26017 Vertigo modesta KL020561 -7.31 -7.81 -999 -1.69 -2.39 -999 KIEL RS355Vm 3.575 26060 Vertigo modesta KL020562 -7.86 -8.36 -999 -0.60 -1.30 -999 KIEL duplicates averaged RS360Vm 3.625 26101 Vertigo modesta KL020563 -7.35 -7.85 -999 -0.05 -0.75 -999 KIEL RS370Vm 3.725 26186 Vertigo modesta KL020564 -8.24 -8.74 -999 0.39 -0.31 -999 KIEL RS375Vm 3.775 26228 Vertigo modesta KL020565 -7.24 -7.74 -999 -0.55 -1.25 -999 KIEL 1.1 1.1 RS375Vh 3.775 26228 Vertigo hubrichti KL020566 -8.32 -8.32 -999 -1.64 -1.64 -999 KIEL RS380Vm 3.825 26228 Vertigo modesta KL020568 -6.62 -7.12 -999 -0.51 -1.21 -999 KIEL RS385Vm 3.875 26269 Vertigo modesta KL020570 -7.38 -7.88 -999 -0.66 -1.36 -999 KIEL RS390Vm 3.925 26310 Vertigo modesta KL020576 -6.71 -7.21 -999 -0.37 -1.07 -999 KIEL RS400Vh 4.025 26437 Vertigo hubrichti KL020577 -8.03 -8.03 -999 -0.53 -0.53 -999 KIEL RS405Vm 4.075 26479 Vertigo modesta KL020578 -8.14 -8.64 -999 1.15 0.45 -999 KIEL RS410Vm 4.125 26524 Vertigo modesta KL020579 -7.05 -7.55 -999 0.02 -0.68 -999 KIEL RS415Vm 4.175 26572 Vertigo modesta KL020581 -7.64 -8.14 -999 -0.25 -0.95 -999 KIEL duplicates averaged RS420Vm 4.225 26624 Vertigo modesta KL020582 -7.62 -8.12 -999 -0.57 -1.27 -999 KIEL RS425Vm 4.275 26675 Vertigo modesta KL020584 -8.33 -8.83 -999 -0.44 -1.14 -999 KIEL RS435Vm 4.375 26779 Vertigo modesta GBC001006 -6.96 -7.46 0.03 0.34 -0.36 0.03 BENCH RS440Vm 4.425 26831 Vertigo modesta GBC001007 -7.84 -8.34 0.10 0.63 -0.07 0.12 BENCH 0.6 0.3 RS440Vh 4.425 26831 Vertigo hubrichti GBC001452 -8.42 -8.42 0.09 0.35 0.35 0.08 BENCH RS445Ve 4.475 26885 Vertigo gouldii GBC001008 -7.93 -7.93 0.03 0.16 0.16 0.04 BENCH RS455Vh 4.575 26990 Vertigo hubrichti GBC001009 -8.23 -8.23 0.05 0.47 0.47 0.05 BENCH RS460Vh 4.625 27042 Vertigo hubrichti GBC001010 -8.12 -8.12 0.10 -0.37 -0.37 0.08 BENCH RS465Vh 4.675 27090 Vertigo hubrichti GBC001011 -8.14 -8.14 0.04 0.14 0.14 0.04 BENCH RS470Ve 4.725 27133 Vertigo gouldii GBC001013 -9.01 -9.01 0.13 -0.73 -0.73 0.11 BENCH RS475Ve 4.775 27177 Vertigo gouldii GBC001014 -8.03 -8.03 0.01 -0.35 -0.35 0.04 BENCH RS490Ve 4.925 27312 Vertigo gouldii GBC001015 -8.42 -8.42 0.06 -0.02 -0.02 0.08 BENCH RS495Ve 4.975 27357 Vertigo gouldii GBC001016 -7.72 -7.72 0.02 -0.38 -0.38 0.04 BENCH RS500Ve 5.025 27401 Vertigo gouldii GBC001017 -8.03 -8.03 0.03 0.72 0.72 0.02 BENCH RS505Ve 5.075 27442 Vertigo gouldii GBC001004 -7.91 -7.91 0.05 -0.22 -0.22 0.06 BENCH RS505Vh 5.075 27442 Vertigo hubrichti GBC001019 -7.88 -7.88 0.10 -0.04 -0.04 0.09 BENCH RS510Ve 5.125 27482 Vertigo gouldii GBC001021 -8.24 -8.24 0.03 -0.17 -0.17 0.11 BENCH RS515Vh 5.175 27521 Vertigo hubrichti GBC001022 -7.50 -7.50 0.09 0.03 0.03 0.11 BENCH duplicates averaged RS530Ve 5.325 27637 Vertigo gouldii GBC001023 -7.17 -7.17 0.06 -0.52 -0.52 0.05 BENCH RS535Ve 5.375 27676 Vertigo gouldii GBC001024 -7.80 -7.80 0.06 -0.84 -0.84 0.07 BENCH RS560Ve 5.625 27871 Vertigo gouldii KL020654 -8.58 -8.58 -999 -0.91 -0.91 -999 KIEL RS565Ve 5.675 27910 Vertigo gouldii GBC001025 -7.19 -7.19 0.02 0.05 0.05 0.08 BENCH RS570Ve 5.725 27949 Vertigo gouldii GBC001026 -7.95 -7.95 0.06 -0.40 -0.40 0.06 BENCH RS575Ve 5.775 27987 Vertigo gouldii GBC001018 -6.53 -6.53 0.07 0.65 0.65 0.13 BENCH RS580Ve 5.825 28027 Vertigo gouldii KL020657 -8.22 -8.22 -999 -0.25 -0.25 -999 KIEL RS590Ve 5.925 28106 Vertigo gouldii GBC001030 -7.80 -7.80 0.06 -0.16 -0.16 0.05 BENCH RS595Ve 5.975 28146 Vertigo gouldii KL020661 -7.24 -7.24 -999 -1.35 -1.35 -999 KIEL RS625Ve 6.275 28398 Vertigo gouldii GBC001031 -8.29 -8.29 0.08 0.00 0.00 0.07 BENCH RS630Ve 6.325 28440 Vertigo gouldii GBC001449 -7.36 -7.36 0.07 0.50 0.50 0.09 BENCH RS635Ve 6.375 28483 Vertigo gouldii GBC001032 -8.07 -8.07 0.04 0.17 0.17 0.07 BENCH RS755Ve 7.575 29485 Vertigo gouldii KL020659 -7.94 -7.94 -999 -0.06 -0.06 -999 KIEL RS765Ve 7.675 29829 Vertigo gouldii GBC001033 -6.50 -6.50 0.10 0.62 0.62 0.07 BENCH RS780Ve 7.825 30001 Vertigo gouldii KL020660 -7.26 -7.26 -999 0.19 0.19 -999 KIEL RS745S 7.475 29599 Succineidae GBC001034 -6.73 -6.73 0.14 1.18 1.18 0.06 BENCH RS755S 7.575 29714 Succineidae GBC001035 -7.21 -7.21 0.07 2.08 2.08 0.08 BENCH RS755S-Dup 7.575 29714 Succineidae GBC001055 -7.29 -7.29 0.01 2.27 2.27 0.02 BENCH RS760S 7.625 29772 Succineidae GBC001028 -7.78 -7.78 0.05 1.35 1.35 0.09 BENCH RS765S 7.625 29772 Succineidae GBC001041 -8.42 -8.42 0.04 1.78 1.78 0.07 BENCH