{"xmlId":"81826","NOAAStudyId":"40728","studyName":"Xinya Cave Geochemical Data from 3900 to -55 Cal Yr BP","doi":"https://doi.org/10.25921/e8m7-nm42","uuid":"57d75d69-be77-45df-ae3e-c28942bf99d3","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":"SPELEOTHEMS","investigators":"Li, J.Y.; Li, H.-C.; Li, T.-Y.; Mii, H.-S.; Yu, T.-L.; Shen, C.-C.; Xu, X.","investigatorDetails":[{"firstName":"JunYun","lastName":"Li","initials":"J.Y.","orcId":null},{"firstName":"Hong-Chun","lastName":"Li","initials":"H.-C.","orcId":"0000-0001-9614-7119"},{"firstName":"Ting-Yong","lastName":"Li","initials":"T.-Y.","orcId":"0000-0003-1236-3354"},{"firstName":"Horng-Sheng","lastName":"Mii","initials":"H.-S.","orcId":"0000-0002-0702-3307"},{"firstName":"Tsai-Luen","lastName":"Yu","initials":"T.-L.","orcId":null},{"firstName":"Chuan-Chou","lastName":"Shen","initials":"C.-C.","orcId":"0000-0003-2833-2771"},{"firstName":"Xiaomei","lastName":"Xu","initials":"X.","orcId":"0000-0003-3678-2748"}],"version":"1.0","funding":[],"studyNotes":"Data contributed as part of SISAL v3 Global Speleothem Isotope and Trace Element Database (https://doi.org/10.25921/jajq-qg60).","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/40728","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-cave-40728.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-cave-40728.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/speleothem","studyCode":null,"scienceKeywords":null,"reconstruction":"N","contributionDate":"2025-01-28","entryId":"noaa-cave-40728","earliestYearBP":3944,"mostRecentYearBP":-55,"earliestYearCE":-1994,"mostRecentYearCE":2005,"publication":[{"author":{"name":"Li, Jun-Yun; Hong-Chun Li; Ting-Yong Li; Horng-Sheng Mii; Tsai-Lune Yu; Chuan-Chou Shen; Xiaomei Xu"},"pubYear":2017,"title":"High-resolution ´18O and ´13C records of an AMS 14C and 230Th/U dated stalagmite from Xinya Cave in Chongqing: Climate and vegetation change during the late Holocene","journal":"Quaternary International","volume":"447","edition":null,"issue":null,"pages":"75-88","reportNumber":null,"citation":"Li, Jun-Yun; Hong-Chun Li; Ting-Yong Li; Horng-Sheng Mii; Tsai-Lune Yu; Chuan-Chou Shen; Xiaomei Xu. 2017. High-resolution ´18O and ´13C records of an AMS 14C and 230Th/U dated stalagmite from Xinya Cave in Chongqing: Climate and vegetation change during the late Holocene. Quaternary International, 447, 75-88. doi: 10.1016/j.quaint.2017.06.075","type":"publication","identifier":{"type":"doi","id":"10.1016/j.quaint.2017.06.075","url":"http://dx.doi.org/10.1016/j.quaint.2017.06.075"},"abstract":"Two stalagmites, XY07-8 and -11 collected from Xinya Cave in northeast Chongqing of China, were dated by 230Th/U and AMS 14C methods. The Holocene parts of the stalagmites contain high Th contents, resulting large uncertainties of the 230Th/U ages. Two precise 230Th/U dates in the pre-Holocene part of XY07-8 agree well with the AMS 14C ages. The Holocene 14C dates of the two stalagmites reveal a 600-year initial 14C age which was probably introduced from the dissolved CO2 in the overlaying soil and transferred into the seepage water, supported by the AMS 14C dating on soil organic carbon in an overlying soil profile near the cave. Based on the AMS 14C and 230Th/U dating results, a reliable chronology of the 22-cm part of XY07-8 has been established, revealing a continuous growth since 23 ka BP. The ´18O and ´13C records of the top 5.3-cm part of XY07-8 provide climate and vegetation changes over the past 4100 years. The comparisons of the XY07-8 ´18O record with the instrumental rainfall, historic dry-wet index and the stalagmite ´18O records from other caves in eastern China not only serve verification of the XY07-8 chronology, but also confirm the ´18O record as a monsoonal rainfall proxy. The XY07-8 ´18O record indicates that on millennial scale the intensity of East Asian Summer Monsoon was decreased from 4100 a BP to 2400 a BP following the decline of the summer insolation, then leveling out with decadal-to-centennial variations. On decadal-to-centennial scales, the XY07-8 ´18O record reveals wetness changes probably corresponding to variations in total solar irradiance (TSI), with lighter ´18O excursions reflecting wetter episodes under less TSI that is opposite to the ´18O  TSI correlation of the stalagmite records from the caves in north and south China. Furthermore, unlike the ´18O record, the ´13C record does not show the Holocene insolation decline trend, but generally following the decadal-to-centennial variations of the ´18O record and the TSI record except the last 150 years. Since 1850 CE, the XY07-8 ´18O has an enriched trend which reflects an arid trend in climate, but the ´13C has a depleted trend perhaps indicating human impacts on the vegetation and atmosphere CO2. This study calls for the attention to the discrepancies and physical meanings of stalagmite ´18O on different time scales (monsoon intensity on millennium scale vs. rainfall index on decadal scale) and to the spatial disparity of monsoonal rainfall in eastern China.","pubRank":"1"},{"author":{"name":"Kaushal, Nikita, Franziska A. Lechleitner, Micah Wilhelm, Khalil Azennoud, Janica C. Bühler, Kerstin Braun, Yassine Ait Brahim, Andy Baker, Yuval Burstyn, Laia Comas-Bru, Jens Fohlmeister, Yonaton Goldsmith, Sandy P. Harrison, István G. Hatvani, Kira Rehfeld, Magdalena Ritzau, Vanessa Skiba, Heather M. Stoll, József G. Szucs, Péter Tanos, Pauline C. Treble, Vitor Azevedo, Jonathan L. Baker, Andrea Borsato, Sakonvan Chawchai, Andrea Columbu, Laura Endres, Jun Hu, Zoltán Kern, Alena Kimbrough, Koray Koç, Monika Markowska, Belen Martrat, Syed Masood Ahmad, Carole Nehme, Valdir Felipe Novello, Carlos Pérez-Mejías, Jiaoyang Ruan, Natasha Sekhon, Nitesh Sinha, Carol V. Tadros, Benjamin H. Tiger, Sophie Warken, Annabel Wolf, Haiwei Zhang, and SISAL Working Group members"},"pubYear":2024,"title":"SISALv3: a global speleothem stable isotope and trace element database","journal":"Earth System Science Data","volume":"16","edition":null,"issue":null,"pages":"1933-1963","reportNumber":null,"citation":"Kaushal, Nikita, Franziska A. Lechleitner, Micah Wilhelm, Khalil Azennoud, Janica C. Bühler, Kerstin Braun, Yassine Ait Brahim, Andy Baker, Yuval Burstyn, Laia Comas-Bru, Jens Fohlmeister, Yonaton Goldsmith, Sandy P. Harrison, István G. Hatvani, Kira Rehfeld, Magdalena Ritzau, Vanessa Skiba, Heather M. Stoll, József G. Szucs, Péter Tanos, Pauline C. Treble, Vitor Azevedo, Jonathan L. Baker, Andrea Borsato, Sakonvan Chawchai, Andrea Columbu, Laura Endres, Jun Hu, Zoltán Kern, Alena Kimbrough, Koray Koç, Monika Markowska, Belen Martrat, Syed Masood Ahmad, Carole Nehme, Valdir Felipe Novello, Carlos Pérez-Mejías, Jiaoyang Ruan, Natasha Sekhon, Nitesh Sinha, Carol V. Tadros, Benjamin H. Tiger, Sophie Warken, Annabel Wolf, Haiwei Zhang, and SISAL Working Group members. 2024. SISALv3: a global speleothem stable isotope and trace element database. Earth System Science Data, 16, 1933-1963. doi: 10.5194/essd-16-1933-2024","type":"publication","identifier":{"type":"doi","id":"10.5194/essd-16-1933-2024","url":"http://dx.doi.org/10.5194/essd-16-1933-2024"},"abstract":null,"pubRank":"2"}],"site":[{"NOAASiteId":"37082","siteName":"Xinya Cave","siteCode":null,"mappable":"Y","locationName":"Continent>Asia>Eastern Asia>China","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["30.75","109.4667"]},"properties":{"southernmostLatitude":"30.75","northernmostLatitude":"30.75","westernmostLongitude":"109.4667","easternmostLongitude":"109.4667","minElevationMeters":"1250","maxElevationMeters":"1250"}},"paleoData":[{"dataTableName":"XY07-8 isotopes Li2017 SISAL v3","NOAADataTableId":"54319","earliestYear":3944,"mostRecentYear":-55,"timeUnit":"cal yr BP","earliestYearBP":3944,"mostRecentYearBP":-55,"earliestYearCE":-1994,"mostRecentYearCE":2005,"coreLengthMeters":null,"dataTableNotes":null,"species":[],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/speleothem/SISAL-v3/noaa_templates/Li2017-XY07-8.txt","urlDescription":"NOAA Template File","linkText":"XY07-8 Speleothem Geochemical Data","variables":[{"cvDataType":"SPELEOTHEMS","cvWhat":"depth variable>depth","cvMaterial":null,"cvError":null,"cvUnit":"length unit>millimeter","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"depth_sample"},{"cvDataType":"SPELEOTHEMS","cvWhat":"age variable>age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>calendar year before present","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"interp_age"},{"cvDataType":"SPELEOTHEMS","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil>per mil VPDB","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"d18O_measurement"},{"cvDataType":"SPELEOTHEMS","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil>per mil VPDB","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"measurement precision","cvFormat":"Numeric","cvShortName":"d18O_precision"},{"cvDataType":"SPELEOTHEMS","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil>per mil VPDB","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"d13C_measurement"},{"cvDataType":"SPELEOTHEMS","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil>per mil VPDB","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"measurement precision","cvFormat":"Numeric","cvShortName":"d13C_precision"}],"NOAAKeywords":["earth science>paleoclimate>speleothems>carbon isotopes","earth science>paleoclimate>speleothems>oxygen isotopes"]}]}]}],"reference":{"pastThesaurusSkos":"https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf","pastThesaurusExplorer":"https://www.ncei.noaa.gov/access/paleo-search/cvterms","gcmdKeywordThesaurus":"https://earthdata.nasa.gov/earth-observation-data/find-data/idn/gcmd-keywords"},"dataLicenseDescription":null,"dataLicenseUrl":null}