PANGAEA_988350 Th-U ages over the last 112,000 years from Devils Hole calcite (NV, USA) for palaeo water table reconstruction Steidle, Simon Dominik; Dublyansky, Yuri; Roman, Marco; Moseley, Gina Elaine; Wendt, Kathleen A; Edwards, R Lawrence; Spötl, Christoph Th-U ages over the last 112,000 years from Devils Hole calcite (NV, USA) for palaeo water table reconstruction 2026-01-09 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.988350 Investigator Simon Dominik Steidle simonsteidlescience@gmail.com Earth Science Event label Sample code/label Comment ELEVATION DISTANCE Uranium-238 Uranium-238, uncertainty Thorium-232 Thorium-232, uncertainty Thorium-230/Thorium-232 atomic ratio Thorium-230/Thorium-232 atomic ratio, uncertainty δ234 Uranium δ234 Uranium, uncertainty Thorium-230/Uranium-238 activity ratio Thorium-230/Uranium-238 activity ratio, uncertainty Age, dated Age, dated, uncertainty δ234 Uranium (0) δ234 Uranium (0), uncertainty Calendar age Calendar age, uncertainty Type geoscientificInformation Devils Hole DevilsHole_F DevilsHole_H DevilsHole_I DevilsHole_I-bis DevilsHole_J DevilsHole_N DevilsHole_S DevilsHole_T DevilsHole_U Great Basin groundwater table palaeoclimate speleothem Speleothem sample Th-U ages Measured Age, 230Th/U, not corrected for detrital 230Th Corrected Age, 230Th/U, corrected for detrital 230Th 2023-02-11 2023-02-11 Complete 36.416 36.416 -116.283 -116.283 unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 1070 data points text/tab-separated-values Steidle, Simon Dominik; Dublyansky, Yuri; Roman, Marco; Moseley, Gina Elaine; Wendt, Kathleen A; Edwards, R Lawrence; Spötl, Christoph (2026): Timing and amplitude of hydroclimate changes during the last glacial cycle in southwestern North America. Quaternary Science Reviews, 377, 109865, https://doi.org/10.1016/j.quascirev.2026.109865 Steidle, Simon Dominik; Wendt, Kathleen A; Dublyansky, Yuri; Edwards, R Lawrence; Li, Xianglei; McClure, Gracelyn; Moseley, Gina Elaine; Spötl, Christoph (2024): Moisture availability and groundwater recharge paced by orbital forcing over the past 750,000 years in the southwestern USA. Communications Earth & Environment, 5(1), 376, https://doi.org/10.1038/s43247-024-01550-0

U-series measurements to constrain the age of Devils Hole cave 2's submerged calcite (Nevada, USA). Samples originate from 9 horizontally drilled cores of 0.5 to 1.3m length and 2.5cm diameter. They were taken from the hanging wall at elevations between +3.2 m and +9.9 m relative to the modern water table. Sampling was done between the years 2015 and 2023. Samples for dating are all taken from mammillary calcite which precipitates from the groundwater underneath the water table. The sequence of mammillary calcite and Folia which only grows at the water table surface allow to reconstruct a water table history. Depending on the sequence of mammillary calcite and Folia, samples represent the following types: ( i ) the water table increased above this elevation, ( d ) the water table decrease to below this elevation, ( b ) water table rose briefly above this elevation and then dropped below it again, ( x ) water table was above this elevation (see method section of Steidle et al. (2024) for details). 230Th/U ages were calculated. The updated record of water-table changes enables a comparison with sea-level records between 120,000 to 70,000 years ago, revealing concurrent changes in both during this period. This strengthens the hypothesis that orbital-scale water-table changes are closely linked to ice-sheet expansion during Marine Isotope Stage 5. New water table markers of the last 60,000 years further support increased pluvial conditions during Heinrich events. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.988350"! ** Kathleen A. Wendt was supported by the Heising-Simons Foundation

http://en.wikipedia.org/wiki/Elevation ELEVATION https://doi.org/10.1016/j.quascirev.2026.109865 Timing and amplitude of hydroclimate changes during the last glacial cycle in southwestern North America https://doi.org/10.1038/s43247-024-01550-0 Moisture availability and groundwater recharge paced by orbital forcing over the past 750,000 years in the southwestern USA DIF 9.4 2026-01-09 2026-04-30