Leviathan Chronology v2, Nevada 174KYr Stalagmite d18O Data Lachniet, M.S.; Asmerom, Y.; Polyak, V.J.; Denniston, R.F. Lachniet, M.S. Asmerom, Y. Polyak, V.J. Denniston, R.F. earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,composited|corrected|interpolated,isotope ratio mass spectrometry,N,corrected for ice-volume) earth science/paleoclimate/speleothems (age,null,null,calendar year before present,null,speleothems,null,null,N,present defined as 2000 CE) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,composited|interpolated,isotope ratio mass spectrometry,N,composite 100-yr interpolated) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,composited|corrected|filtered|interpolated,isotope ratio mass spectrometry,N,filtered for difference in precipitation d18O values between the sites as determined from multiple regression analysis) earth science/paleoclimate/speleothems (Devils Hole>LATITUDE 36.4256>LONGITUDE -116.2908) (Leviathan Cave>LATITUDE 37.89>LONGITUDE -115.58) The driving force behind Quaternary glacial-interglacial cycles and much associated climate change is widely considered to be orbital forcing. However, previous versions of the iconic Devils Hole (Nevada) subaqueous calcite record exhibit shifts to interglacial values ~10,000 years before orbitally forced ice age terminations, and interglacial durations ~10,000 years longer than other estimates. Our measurements from Devils Hole 2 replicate virtually all aspects of the past 204,000 years of earlier records, except for the timing during terminations, and they lower the age of the record near Termination II by ~8000 years, removing both ~10,000-year anomalies. The shift to interglacial values now broadly coincides with the rise in boreal summer insolation, the marine termination, and the rise in atmospheric CO2, which is consistent with mechanisms ultimately tied to orbital forcing. STUDY NOTES: Stalagmite d18O values from Leviathan Cave and Devils Hole, Nevada, known as the Leviathan Chronology v2. The original 2014 Leviathan Chronology is archived at: https://www.ncdc.noaa.gov/paleo/study/16517 NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Lachniet, M.S. Investigator : Asmerom, Y. Investigator : Polyak, V.J. Investigator : Denniston, R.F. 2017-10-11 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/22870 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/nevada/devilshole2017.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/nevada/leviathan2017.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/nevada/devilshole2017.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/nevada/leviathan2017.txt English https://www.ncdc.noaa.gov/paleo/study/22870 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/nevada/devilshole2017.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/nevada/leviathan2017.txt Matthew Lachniet, Yemane Asmerom, Victor Polyak, Rhawn Denniston2017Arctic cryosphere and Milankovitch forcing of Great Basin paleoclimateScientific Reports7110.1038/s41598-017-13279-2https://www.nature.com/articles/s41598-017-13279-2 Gina E. Moseley, R. Lawrence Edwards, Kathleen A. Wendt, Hai Cheng, Yuri Dublyansky, Yanbin Lu, Ronny Boch, Christoph Spötl2016Reconciliation of the Devils Hole climate record with orbital forcingScience3516269165-16810.1126/science.aad4132http://science.sciencemag.org/content/351/6269/165 START YEAR: 204200 cal yr BP * END YEAR: 0 cal yr BP -116.2908 36.4256 -115.58 37.89