John O. Stone

TL;DR: In this article, it was shown that the cosmic ray flux increases at higher altitude as air pressure and the shielding effect of the atmosphere decrease, and that altitude-dependent scaling factors are required to compensate for this effect in calculating cosmic ray exposure ages.

TL;DR: In this paper, the authors present a single complete and straightforward method that reflects currently accepted practices and is consistent with existing production rate calibration measurements, which is intended to enable geoscientists, who wish to use cosmogenic-nuclide exposure age or erosion rate measurements in their work, to calculate exposure ages and erosion rates; compare previously published exposure ages on a common basis; and evaluate the sensitivity of their results to differences between published production rate scaling schemes.

TL;DR: In this article, the authors describe a calibration procedure developed during the Cosmic-Ray Produced Nuclide Systematics on Earth (CRONUS-Earth) project and its application to an extensive data set that included both new cosmogenic nuclide samples and samples from previously published studies.

TL;DR: In this article, the authors measured the spallation rate of calcite at Tabernacle Hill basalt at an altitude of 1445 m and an effective geomagnetic latitude of 40.9 ° and estimated the corresponding rate at sea level and high latitude at 48.8 ± 3.4 atoms (g Ca)−1 a−1.

TL;DR: The surface exposure ages of glacial deposits in the Ford Ranges of western Marie Byrd Land indicate continuous thinning of the West Antarctic Ice Sheet by more than 700 meters near the coast throughout the past 10,000 years as discussed by the authors.