El Capitan Cave, SE Alaska 75,000 Year Speleothem Stable Isotope Data Wilcox, P.S.; Dorale, J.A.; Baichtal, J.F.; Spötl, C.; Fowell, S.J.; Edwards, R.L.; Kovarik, J.L. Wilcox, P.S. Dorale, J.A. Baichtal, J.F. Spötl, C. Fowell, S.J. Edwards, R.L. Kovarik, J.L. earth science/paleoclimate/speleothems earth science/paleoclimate/speleothems (El Capitan Cave>LATITUDE 56.162>LONGITUDE -133.319) A stalagmite from Prince of Wales Island grew episodically between ~75,000 and ~11,100 yr BP; interrupted by seven hiatuses. Hiatuses most likely correspond to permafrost development and a temperature drop of up to 5C from modern conditions. Intervals of calcite deposition place tight constraints on the timing of mild climatic episodes in Alaska during the last glacial period, when permafrost was absent, allowing water infiltration into the karst system. These periods of calcite deposition are synchronous, within dating uncertainties, with Greenland Interstadials 1, 10, 11, 12c, 14b-14e, 16.1a, 17.2, and 20c. STUDY NOTES: Speleothem stable isotope (d18O, d13C) data from El Capitan Cave, southeast Alaska, for the past 75,000 years. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Wilcox, P.S. Investigator : Dorale, J.A. Investigator : Baichtal, J.F. Investigator : Spötl, C. Investigator : Fowell, S.J. Investigator : Edwards, R.L. Investigator : Kovarik, J.L. 2019-05-27 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/26770 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/alaska/el-capitan2019iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/alaska/el-capitan2019iso.txt English https://www.ncdc.noaa.gov/paleo/study/26770 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/alaska/el-capitan2019iso.txt Paul S. Wilcox, Jeffrey A. Dorale, James F. Baichtal, Christoph Spotl, Sarah J. Fowell, R. Lawrence Edwards, Johanna L. Kovarik2019Millennial-scale glacial climate variability in Southeastern Alaska follows Dansgaard-Oeschger cyclicityScientific Reports7880910.1038/s41598-019-44231-1https://www.nature.com/articles/s41598-019-44231-1 START YEAR: 75125 cal yr BP * END YEAR: 11100 cal yr BP -133.319 56.162 -133.319 56.162