Pirrit Hills subglacial bedrock core RB-2, cosmogenic Be-10, Al-26 data

• Main Author: Stone, John
• Format: Dataset
• Language: English
• Published: U.S. Antarctic Program (USAP) Data Center 2019
• Subjects: Aluminum-26; Beryllium-10; Bedrock Core; isotope data; Cosmogenic; Al-26; Be-10; Subglacial Bedrock; Rocks; Cosmogenic Dating; ChemistryRock; Glaciology; Ice Core Records; Antarctica; Glaciers/Ice Sheet; Cryosphere; Solid Earth; Antarctic; West Antarctic Ice Sheet; Pirrit Hills; Harter Nunatak; Antarc*; ice core; Ice Sheet
• Online Access: https://dx.doi.org/10.15784/601214; http://www.usap-dc.org/view/dataset/601214

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.