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The thermal and deformational history of apollo 15418, A partly shock-melted lunar breccia

September 28, 2010

A thermal and mechanical history of lunar gabbroic anorthosite 15418 (1140g) has been deduced from petrographic examination of both exterior and interior thin sections and electron microprobe analysis and transmission electron microscopy of interior thin sections. We suggest that the rock underwent two major shock events - an early brecciation and annealing that produced a recrystallized breccia, followed by a second shock event that melted the surface of the rock, vitrified the interior plagioclase and heavily deformed the mafic phases. This latter shock even was also followed by annealing which crystallized the shock-produced glass and promoted recovery and recrystallization of the deformed crystalline phases. The complex mechanical and thermal history of 15418 compared with other ANT suite rocks at Spur Crater suggests that it had a different provenance. ?? 1977 D. Reidel Publishing Company, Dordrecht-Holland.

Citation Information

Publication Year 1977
Title The thermal and deformational history of apollo 15418, A partly shock-melted lunar breccia
DOI 10.1007/BF00562197
Authors G.L. Nord, J.M. Christie, J.S. Lally, A.H. Heuer
Publication Type Article
Publication Subtype Journal Article
Series Title The Moon
Series Number
Index ID 70001016
Record Source USGS Publications Warehouse
USGS Organization