Simple computer code for estimating cosmic-ray shielding by oddly shaped objects

This paper describes computer code for estimating the effect on cosmogenic-nuclide production rates of arbitrarily shaped obstructions that partially or completely attenuate the cosmic ray flux incident on a sample site. This is potentially useful for cosmogenic-nuclide exposure dating of geometrically complex landforms. The code has been validated against analytical formulae applicable to objects with regular geometries. It has not yet been validated against empirical measurements of cosmogenic-nuclide concentrations in samples with the same exposure history but different shielding geometries. (C) 2014 Elsevier B.V. All rights reserved.