Catastrophic rupture of lunar rocks - A Monte Carlo simulation

Details Catastrophic rupture of lunar rocks - A Monte Carlo simulation Catastrophic rupture of lunar rocks - A Monte Carlo simulation

Jul 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975moon...13..235h&link_type=abstract

(Lunar Science Institute, Symposium on Origin and Evolution of the Lunar Regolith, Houston, Tex., Nov. 13-15, 1974.) The Moon, v

Mathematics

Probability

10

Computerized Simulation, Lunar Craters, Lunar Rocks, Meteorite Collisions, Monte Carlo Method, Cratering, Lunar Surface, Mathematical Models, Rupturing

Scientific paper

A computer model based on Monte Carlo techniques was developed to simulate the destruction of lunar rocks by 'catastrophic rupture' due to meteoroid impact. Energies necessary to accomplish catastrophic rupture were derived from laboratory experiments. A crater-production rate derived from lunar rocks was utilized to calculate absolute time scales. Calculated median survival times for crystalline lunar rocks are 1.9, 4.6, 10.3, and 22 m.y. for rock masses of 10, 100, 1000, and 10,000 g, respectively. Corresponding times of 6, 14.5, 32, and 68 million years are required before the probability of destruction reaches 0.99. These results are consistent with absolute exposure ages measured on returned rocks. Some results also substantiate previous conclusions that the catastrophic-rupture process is significantly more effective in obliterating lunar rocks than mass wasting by single-particle abrasion. The view is also corroborated that most rocks presently on the lunar surface either are exhumed from the regolith or are fragments of much larger boulders rather than primary ejecta excavated from pristine bedrock.

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