Shock metamorphism of granulated lunar basaltThe paper deals with an extensive series of shock-recovery experiments performed on both nonporous crystalline basalt and its granulated and sieved counterpart to study the role of porosity and grain size in shock motomorphic effects under otherwise identical conditions. Shocked samples are compared with unshocked starting material in terms of textural and mineralogical modifications attributable to shock. A comparative petrographic and chemical characterization is presented of pulverized and sieved lunar basalt 75035 shocked between 6 and 75 GPa in comparison with holocrystalline disks of the same basalts shocked in 10 earlier experiments. Specifically, a petrographic classification of shock features is given, along with an estimation of relative amounts of shock glasses and a chemical characterization of shock glasses in each shocked granular basalt.
Document ID
19800039538
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Schaal, R. B. (Lockheed Electronics Co. Houston, TX, United States)
Thompson, T. D. (Lockheed Electronics Co., Inc. Houston, Tex., United States)
Hoerz, F. (Lockheed Electronics Co. Houston, TX, United States)
Bauer, J. F. (NASA Johnson Space Center Houston, Tex., United States)