noaa-cave-40728 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2025-03-09 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Xinya Cave Geochemical Data from 3900 to -55 Cal Yr BP 2025-01-28 publication doi:10.25921/e8m7-nm42 noaa-cave-40728 NCEI DSI 1200_02 NCEI DSI 1200_01 Li, J.Y. originator Li, J.Y. author Li, H.-C. originator Li, H.-C. author Li, T.-Y. originator Li, T.-Y. author Mii, H.-S. originator Mii, H.-S. author Yu, T.-L. originator Yu, T.-L. author Shen, C.-C. originator Shen, C.-C. author Xu, X. originator Xu, X. author NOAA National Centers for Environmental Information publisher tableDigital This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Cave. The data include parameters of speleothems with a geographic location of China, Eastern Asia. The time period coverage is from 3944 to -55 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. Records of past temperature, precipitation, and other aspects of climate derived from mineral deposits found in caves. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-cave.png Paleoclimatology - Speleothem PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Land Records > Cave Deposits Earth Science > Climate Indicators > Paleoclimate Indicators > Speleothems Earth Science > Paleoclimate > Land Records > Cave Deposits theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian earth science > paleoclimate > speleothems earth science > paleoclimate > speleothems earth science > paleoclimate > speleothems earth science > paleoclimate > speleothems earth science > paleoclimate > speleothems earth science > paleoclimate > speleothems earth science > paleoclimate > speleothems > carbon isotopes earth science > paleoclimate > speleothems > oxygen isotopes theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian What: age; Material: null What: delta 13C; Material: calcite What: delta 13C; Material: calcite What: depth; Material: null What: delta 18O; Material: calcite What: delta 18O; Material: calcite theme Paleoenvironmental Standard Terms (PaST) Thesaurus NOAA National Centers for Environmental Information https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus PaST Thesaurus information publisher Continent > Asia > Eastern Asia > China > Xinya Cave > LATITUDE 30.75 > LONGITUDE 109.4667 place DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian otherRestrictions Cite as: Li, J.Y.; Li, H.-C.; Li, T.-Y.; Mii, H.-S.; Yu, T.-L.; Shen, C.-C.; Xu, X. (2025-01-28): NOAA/WDS Paleoclimatology - Xinya Cave Geochemical Data from 3900 to -55 Cal Yr BP. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/e8m7-nm42. Accessed [date]. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose otherRestrictions None otherRestrictions 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. High-resolution δ18O and δ13C records of an AMS 14C and 230Th/U dated stalagmite from Xinya Cave in Chongqing: Climate and vegetation change during the late Holocene 2017 publication Li, Jun-Yun; Hong-Chun Li; Ting-Yong Li; Horng-Sheng Mii; Tsai-Lune Yu; Chuan-Chou Shen; Xiaomei Xu author Quaternary International publisher https://doi.org/10.1016/j.quaint.2017.06.075 HTTPS Web Browser Associated Reference published 2017 Li, Jun-Yun; Hong-Chun Li; Ting-Yong Li; Horng-Sheng Mii; Tsai-Lune Yu; Chuan-Chou Shen; Xiaomei Xu, 2017: High-resolution δ18O and δ13C 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, 10.1016/j.quaint.2017.06.075 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 3944 cal yr BP to -55 cal yr BP; 109.4667 109.4667 30.75 30.75 Study Coordinates 30.75 109.4667 -1994 2005 STUDY NOTES: Data contributed as part of SISAL v3 Global Speleothem Isotope and Trace Element Database (https://doi.org/10.25921/jajq-qg60). ABSTRACT SUPPLIED BY ORIGINATOR: 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 δ18O and δ13C 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 δ18O record with the instrumental rainfall, historic dry-wet index and the stalagmite δ18O records from other caves in eastern China not only serve verification of the XY07-8 chronology, but also confirm the δ18O record as a monsoonal rainfall proxy. The XY07-8 δ18O 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 δ18O record reveals wetness changes probably corresponding to variations in total solar irradiance (TSI), with lighter δ18O excursions reflecting wetter episodes under less TSI that is opposite to the δ18O – TSI correlation of the stalagmite records from the caves in north and south China. Furthermore, unlike the δ18O record, the δ13C record does not show the Holocene “insolation decline” trend, but generally following the decadal-to-centennial variations of the δ18O record and the TSI record except the last 150 years. Since 1850 CE, the XY07-8 δ18O has an enriched trend which reflects an arid trend in climate, but the δ13C 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 δ18O 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. NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Native Format(s) https://doi.org/10.25921/e8m7-nm42 HTTPS Landing Page Metadata Landing Page NCEI landing page with general information and links to access the data. information https://www.ncei.noaa.gov/access/paleo-search/study/40728 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/speleothem HTTPS Information NCEI Cave Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/speleothem/SISAL-v3/noaa_templates/Li2017-XY07-8.txt HTTPS Download /speleothem/SISAL-v3/noaa_templates/Li2017-XY07-8.txt Speleothem download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21