Physics
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.3683s&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 90, April 10, 1985, p. 3683-3700.
Physics
6
Meteorite Craters, Planetary Craters, Sedimentary Rocks, Shock Loads, Thermoluminescence, Arizona, Breccia, Dolomite (Mineral), Impact Loads, Sandstones, Meteorites, Thermoluminescence, Shock Effects, Metamorphism, Petrography, Meteor Crater, Arizona, Fragments, Formation, Age, Temperature, Impacts, Heating, Energy, Thermal Effects, History
Scientific paper
Information on the temperature and relative pressures experienced by shock-metamorphosed Coconino sandstone and Kaibab dolomite from Meteor Crater, Arizona using thermoluminescence (TL) studies is reported. The TL sensitivity of the sandstone decreases systematically with increasing shock. Equivalent dose generally falls rapidly with increasing shock up to a level above which the dose becomes relatively constant. The shock threshold for TL resetting in sandstone correponds to pertrographic shock class two as defined by Kieffer (1971). TL ages obtained for four sandstones and four dolomites ranged from 37,700 and 53,600 years BP. The mean ages for sandstones and dolomites, 50,400 and 46,000 years, respectively, were reasonably concordant. The final TL age for Meteor Crater was 49,000 with an uncertainty of 3000 years.
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