# Green River Formation Wilkins Peak Member Leaf Wax Hydrogen Isotope Data during the early Eocene #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 4.0 # Encoding: UTF-8 # NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), and date accessed when using downloaded data. # If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. # # Description/Documentation lines begin with '#' followed by a space # Data lines have no '#' # # NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/38021 # Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata. # # Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-lake-38021.json # Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata. # # Data_Type: Paleolimnology # # Dataset_DOI: 10.25921/3wxb-7q13 # # Science_Keywords: #--------------------------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/wyoming/walters2023/walters2023-c30-d2h.txt # Data_Download_Description: NOAA Template File; S-34-1 C30 d2H Data # #--------------------------------------- # Contribution_Date # Date: 2023-05-02 #--------------------------------------- # File_Last_Modified_Date # Date: 2025-05-05 #--------------------------------------- # Title # Study_Name: Green River Formation Wilkins Peak Member Leaf Wax Hydrogen Isotope Data during the early Eocene #--------------------------------------- # Investigators # Investigators: Walters, Andrew; Tierney, Jessica; Zhu, Jiang; Meyers, Stephen; Graves, Katherine; Carroll, Alan #--------------------------------------- # Description_Notes_and_Keywords # Description: Provided Keywords: Hydroclimate #--------------------------------------- # Publication # Authors: Walters, Andrew P.; Tierney, Jessica E.; Zhu, Jiang; Meyers, Stephen R.; Graves, Katherine; Carroll, Alan R. # Published_Date_or_Year: 2023-08-04 # Published_Title: Climate system asymmetries drive eccentricity pacing of hydroclimate during the early Eocene greenhouse # Journal_Name: Science Advances # Volume: 9 # Edition: # Issue: 31 # Pages: # Report_Number: # DOI: 10.1126/sciadv.adg8022 # Online_Resource: # Full_Citation: # Abstract: The early Eocene Climatic Optimum (EECO) represents the peak of Earth’s last sustained greenhouse climate interval. To investigate hydroclimate variability in western North America during the EECO, we developed an orbitally resolved leaf wax δ2H record from one of the most well-dated terrestrial paleoclimate archives, the Green River Formation. Our δ2Hwax results show ∼60‰ variation and evidence for eccentricity and precession forcing. iCESM simulations indicate that changes in the Earth’s orbit drive large seasonal variations in precipitation and δ2H of precipitation at our study site, primarily during the summer season. Our findings suggest that the astronomical response in δ2Hwax is attributable to an asymmetrical climate response to the seasonal cycle, a “clipping” of precession forcing, and asymmetric carbon cycle dynamics, which further enhance the influence of eccentricity modulation on the hydrological cycle during the EECO. More broadly, our study provides an explanation for how and why eccentricity emerges as a dominant frequency in climate records from ice-free greenhouse worlds. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: 1812525 #--------------------------------------- # Site_Information # Site_Name: Green River Formation # Location: Wyoming # Northernmost_Latitude: 41.414231 # Southernmost_Latitude: 41.414231 # Easternmost_Longitude: -109.69675 # Westernmost_Longitude: -109.69675 # Elevation_m: 1917 #--------------------------------------- # Data_Collection # Collection_Name: S-34-1 C30 d2H Walters2023 # First_Year: 51353057 # Last_Year: 51010158 # Time_Unit: calendar year before present # Core_Length_m: 642 # Parameter_Keywords: hydrogen isotopes # Notes: #--------------------------------------- # Chronology_Information # Chronology: # # sample_id depth_m age ageerror_2s # GreyTuff 481.61 50864000 61000 # BoarTuff 515.47 51171000 58000 # SecondTuff 556.02 51286000 67000 # FireholeTuff 589.06 51576000 58000 # #--------------------------------------- # Variables # PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf # PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format. # # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data) # ## sample_id sample identification,,,,,paleolimnology,,,C, ## depth_m depth,,,meter,,paleolimnology,,,N, ## age age,,,calendar year before present,,paleolimnology,,,N, ## age_error age,,two standard error,year,,paleolimnology,,,N, ## C30_d2H delta 2H,C30 n-alkanoic acid,,per mil VSMOW,,paleolimnology,,,N, ## C30_d2H_error delta 2H,C30 n-alkanoic acid,one standard error,per mil VSMOW,,paleolimnology,,,N, #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: NaN sample_id depth_m age age_error C30_d2H C30_d2H_error 196Q2_47-51 497.8378 51010158 202111 -149.161 NaN 196Q3_29-33 498.2578 51013483 199652 -153.279 NaN 196Q4_25-29 498.8328 51017938 197017 -155.462 0.2269299 196Q5_13-5_17-5 499.3328 51021841 195588 -157.834 0.88272731 196Q5_36-5_40-5 499.5628 51023658 194711 -162.735 NaN 197Q3_5-9 501.0228 51035979 197655 -160.22 NaN 197Q3_51-5_55-5 501.4878 51039645 200040 -161.331 2.53752137 197Q4_11-15 501.7028 51041291 201204 -160.625 2.59119953 197Q5_17-21 502.3828 51046676 198238 -172.126 0.97020029 197Q5_28-32 502.4928 51047515 197353 -165.068 0.93771032 198Q1_22-5_26-5 503.0678 51052078 191841 -173.002 0.25843364 198Q1_46-5_50-5 503.3078 51053842 190037 -160.49 1.59700666 198Q2_6-5_10-5 503.4628 51055025 189138 -172.457 NaN 198Q2_47-51 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