{"xmlId":"77993","NOAAStudyId":"36733","studyName":"Searles Valley Plant Wax Carbon and Hydrogen Isotopes and GDGTs during the Pliocene","doi":"https://doi.org/10.25921/cmfc-b433","uuid":"a101e6d9-9bea-48d4-8831-0e2cf85eae80","dataPublisher":"NOAA","contactInfo":{"type":"CONTACT INFORMATION","shortName":"DOC/NOAA/NESDIS/NCEI","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","address":"325 Broadway, E/NE31","city":"Boulder","state":"CO","postalCode":"80305-3328","country":"USA","dataCenterUrl":"https://www.ncei.noaa.gov/products/paleoclimatology","email":"paleo@noaa.gov","phone":"828-271-4800","fax":null,"constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site."},"dataType":"PALEOLIMNOLOGY","investigators":"Peaple, M.D.; Bhattacharya, T.; Tierney, J.E.; Knott, J.R.; Lowenstein, T.K.; Feakins, S.J.","investigatorDetails":[{"firstName":"Mark","lastName":"Peaple","initials":"M.D.","orcId":"0000-0002-4208-0104"},{"firstName":"Tripti","lastName":"Bhattacharya","initials":"T.","orcId":"0000-0002-5528-3760"},{"firstName":"Jessica","lastName":"Tierney","initials":"J.E.","orcId":"0000-0002-9080-9289"},{"firstName":"Jeffrey","lastName":"Knott","initials":"J.R.","orcId":null},{"firstName":"Tim","lastName":"Lowenstein","initials":"T.K.","orcId":"0000-0003-2828-7341"},{"firstName":"Sarah","lastName":"Feakins","initials":"S.J.","orcId":"0000-0003-3434-2423"}],"version":"1.0","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"1903665, 1903148"},{"fundingAgency":"David and Lucile Packard Foundation","fundingGrant":null}],"studyNotes":"Provided Keywords: biomarker, plant wax, carbon isotopes, hydrogen isotopes, GDGT","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/36733","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-36733.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-lake-36733.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/lake","studyCode":null,"scienceKeywords":["Air Temperature Reconstruction"],"reconstruction":"Y","contributionDate":"2022-08-15","entryId":"noaa-lake-36733","earliestYearBP":3370000,"mostRecentYearBP":2710000,"earliestYearCE":-3368050,"mostRecentYearCE":-2708050,"publication":[{"author":{"name":"Peaple, Mark D., Tripti Bhattacharya, Jessica E. Tierney, Jeffrey R. Knott, Tim K. Lowenstein, Sarah J. Feakins"},"pubYear":2024,"title":"Biomarker Evidence for an MIS M2 Glacial-Pluvial in the Mojave Desert Before Warming and Drying in the Late Pliocene","journal":"Paleoceanography and Paleoclimatology","volume":"39","edition":null,"issue":"1","pages":null,"reportNumber":"e2023PA004687","citation":"Peaple, Mark D., Tripti Bhattacharya, Jessica E. Tierney, Jeffrey R. Knott, Tim K. Lowenstein, Sarah J. Feakins. 2024. Biomarker Evidence for an MIS M2 Glacial-Pluvial in the Mojave Desert Before Warming and Drying in the Late Pliocene. Paleoceanography and Paleoclimatology, 39(1), e2023PA004687. doi: 10.1029/2023PA004687","type":"publication","identifier":{"type":"doi","id":"10.1029/2023PA004687","url":"http://dx.doi.org/10.1029/2023PA004687"},"abstract":"Ancient lake deposits in the Mojave Desert indicate that the water cycle in this currently dry place was radically different under past climates. Here we revisit a 700 m core drilled 55 years ago from Searles Valley, California, that recovered evidence for a lacustrine phase during the late Pliocene. We update the paleomagnetic age model and extract new biomarker evidence for climatic conditions from lacustrine deposits (3.3732.706 Ma). The MBT25Me temperature proxy detects present-day conditions (21 ± 3°C, n = 2) initially, followed by warmer-than-present conditions (25 ± 3°C, n = 17) starting at 3.268 and ending at 2.734 Ma. Bacterial and archeal biomarkers reveal lake salinity increased after 3.268 Ma likely reflecting increased evaporation in response to higher temperatures. The ´13C values of plant waxes (30.7 ± 1.40, n = 28) are consistent with local C3 taxa, likely expanded conifer woodlands during the pluvial with less C4 than the Pleistocene. ´D values (174 ± 50, n = 25) of plant waxes indicate precipitation ´D values (89 ± 50, n = 25) in the late Pliocene are within the same range as the late Pleistocene precipitation ´D. Microbial biomarkers identify a deep, freshwater lake and a cooling that corresponds to the onset of major Northern Hemisphere glaciation at marine isotope stage marine isotope stages M2 (3.3 Ma). A more saline lake persisted for ~0.6 Ma across the subsequent warmth of the late Pliocene (3.2682.734 Ma) before the lake desiccated at the Pleistocene intensification of Northern Hemisphere Glaciation.","pubRank":"1"}],"site":[{"NOAASiteId":"59589","siteName":"Searles Valley U234 KM3","siteCode":null,"mappable":"Y","locationName":"Continent>North America>United States Of America>California","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["35.733709","-117.325662"]},"properties":{"southernmostLatitude":"35.733709","northernmostLatitude":"35.733709","westernmostLongitude":"-117.325662","easternmostLongitude":"-117.325662","minElevationMeters":"493","maxElevationMeters":"493"}},"paleoData":[{"dataTableName":"USGS U234 KM3 Peaple2022","NOAADataTableId":"49447","earliestYear":3370000,"mostRecentYear":2710000,"timeUnit":"cal yr BP","earliestYearBP":3370000,"mostRecentYearBP":2710000,"earliestYearCE":-3368050,"mostRecentYearCE":-2708050,"coreLengthMeters":924,"dataTableNotes":"Core research center library number = U234, Well name = KM-3, Operator = Kerr McGee Corp","species":[],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/california/peaple2022b/peaple2023-searles.txt","urlDescription":"NOAA Template File","linkText":"USGS U234 KM3 Biomarker Data","variables":[{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"chemical composition>compound>organic compound>hydrocarbon>alkane>n-alkane>C35 n-alkane","cvMaterial":"geological material>bulk geological material>sediment","cvError":null,"cvUnit":"dimensionless","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>chromatography>gas chromatography>gas chromatography - 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