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Lonar Lake, India: An impact Crater in basalt

Science

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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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Lonar Lake, India: An impact Crater in basalt
Series title:
Science
Volume
180
Issue:
4088
Year Published:
1973
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
862
Last page:
864
Number of Pages:
3