USAP-DC

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Pirrit Hills subglacial bedrock core RB-2, cosmogenic Be-10, Al-26 data Data DOI: https://doi.org/10.15784/601214 Cite as Stone, J. (2019) "Pirrit Hills subglacial bedrock core RB-2, cosmogenic Be-10, Al-26 data" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601214. AMD - DIF Record(s) USAP-1341728_1 Abstract This data set contains measurements of cosmic-ray-produced Be-10 and Al-26 in quartz from the RB-2 core, recovered from bedrock at a depth of 150 m below the West Antarctic Ice Sheet surface in the Pirrit Hills. The core site is located at latitude S81.09948, longitude W85.15694. Core length is approximately 8 meters. Lithology is A-type granite, similar in composition to bedrock exposed on nearby Harter Nunatak and other mountains in the Pirrit Hills (Lee et al. Geosci. J. 16, 421-433). Samples were processed at the University of Washington Cosmogenic Nuclide Laboratory. Chemical processing and purification methods are described at http://depts.washington.edu/cosmolab/chem.shtml. Beryllium isotope ratios were measured at the Lawrence Livermore Center for Accelerator Mass Spectrometry (LLNL-CAMS) relative to the KNSTD-Be-01-5-4 standard, assuming a standard Be-10/Be-9 ratio of 2.851E-12 (07KNSTD normalization). Aluminum isotope ratios were measured at PRIME Lab, Purdue University, relative to the KNSTD-Al-01-5-2 standard, assuming a standard Al-26/Al-27 ratio of 1.818E-12 (KNSTD normalization). Uncertainties are 1-sigma and include full AMS errors and all known sources of laboratory uncertainty. Creator(s): Stone, John Date Created: 2019-10-09 Repository: USAP-DC (current) License: Creative Commons Attribution-NonCommercial v4.0 Generic [CC BY-NC 4.0] Spatial Extent(s) West: -86.3, East: -85, South: -81.3, North: -81 Award(s) NSF 1341728 Version: 1 Related Project(s) EXPROBE-WAIS: Exposed Rock Beneath the West Antarctic Ice Sheet, A Test for Interglacial Ice Sheet Collapse References Spector, P., Stone, J., Pollard, D., Hillebrand, T., Lewis, C., & Gombiner, J. (2018). West Antarctic sites for subglacial drilling to test for past ice-sheet collapse. The Cryosphere, 12(8), 2741-2757. (doi:10.5194/tc-12-2741-2018) Keywords Aluminum-26 Aluminum-26 Antarctica Be-10 Bedrock Core Beryllium-10 Chemistry:rock Cosmogenic Cosmogenic Dating Glaciers/ice Sheet Glaciology Ice Core Records Isotope Data Pirrit Hills Rocks Solid Earth Subglacial Bedrock