USAP-DC

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Marshall Valley U-Series Data Data DOI: https://doi.org/10.15784/601528 Cite as Hall, B. (2022) "Marshall Valley U-Series Data" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601528. AMD - DIF Record(s) USAP-1643248_1 Abstract This dataset includes 234U/230Th chronologic data for lacustrine carbonates associated with Marshall drift in Marshall Valley, Royal Society Range. These samples are from ice-dammed lake deposits associated with a grounded ice sheet that blocked the valley mouth. Sample chemistry was done at the University of Maine geochemistry laboratory. Processed samples were analyzed on a multicollector ICP-MS at the University of Oxford. Corrected ages reflect a detrital correction based on typical upper-crustal (230Th/232Th) values of 1.21 with a 50% assumed error. Creator(s): Hall, Brenda Date Created: 2022-03-01 Repository: USAP-DC (current) License: Creative Commons Attribution Only v4.0 Generic [CC BY 4.0] Spatial Extent(s) West: 164, East: 164.4, South: -78.1, North: -78 Award(s) NSF 0944150 NSF 1643248 Version: 1 Related Project(s) Response of the Antarctic Ice Sheet to the last great global warming Sensitivity of the Antarctic Ice Sheet to Climate Change over the Last Two Glacial/Interglacial Cycles References Heath, S., Hall, B., Denton, G., Henderson, G., and Hendy, C., 2022. Ice-sheet expansion from the Ross Sea into McMurdo Sound, Antarctica, during the last two glaciations. Quaternary Science Reviews 278, 107379 (doi:10.1016/j.quascirev.2022.107379) Keywords 234U/230Th Dating Antarctica Glaciers/ice Sheet Glaciology Last Glacial Maximum Marshall Drift Marshall Valley MIS 6 Royal Society Range