Lonar Lake, India: An Impact Crater in Basalt
- 25 May 1973
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 180 (4088) , 862-864
- https://doi.org/10.1126/science.180.4088.862
Abstract
Discovery of shock-metamorphosed material establishes the impact origin of Lonar Crater. Coarse breccia with shatter coning and microbreccia with moderately shocked fragments containing maskelynite were found in drill holes through the crater floor. Trenches on the rim yield strongly shocked fragments in which plagioclase has melted and vesiculated, and bombs and spherules of homogeneous rock melt. As the only known terrestrial impact crater in basalt, Lonar Crater provides unique opportunities for comparison with lunar craters. In particular, microbreccias and glass spherules from Lonar Crater have close analogs among the Apollo specimens.Keywords
This publication has 7 references indexed in Scilit:
- Glassy objects (impactite glasses?) a possible new evidence for meteoritic origin of the Lonar Crater, Maharashtra State, IndiaEarth and Planetary Science Letters, 1972
- Progressive metamorphism and classification of shocked and brecciated crystalline rocks at impact cratersJournal of Geophysical Research, 1971
- Anatomy of a Meteorite Impact Crater: West Hawk Lake, Manitoba, CanadaGSA Bulletin, 1970
- Shock and Thermal Metamorphism of Basalt by Nuclear Explosion, Nevada Test SiteScience, 1969
- GEOCHEMICAL EVIDENCE FOR THE ORIGIN OF THE LONAR CRATER, MAHARASHTRA, INDIAGSA Bulletin, 1965
- Lonar Crater, India, a Meteorite Crater?Meteoritics, 1964
- The Origin of Hypotheses, Illustrated by the Discussion of a Topographic ProblemScience, 1896