A probable meteorite origin for Mistastin Lake, Labrador
A probable meteorite origin for Mistastin Lake, Labrador
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拉布拉多米斯塔斯汀湖可能的陨石起源
DOI:
10.1139/e69-004
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发表时间:
1969
影响因子:
1.4
通讯作者:
M. Dence
中科院分区:
文献类型:
--
作者:
F. C. Taylor;M. Dence
Mistastin Lake, Labrador, latitude 55°53′ N, longitude 63°18′ W, is a roughly circular lake with a large central island lying in a marked depression. A meteorite impact origin is indicated by shock metamorphism features and fracturing of anorthosite and adamellite on the central island and of inclusions in flat-lying igneous rocks on the western shore. The crater had an original diameter of about 20 km and an age, by whole-rock K–Ar determination, of 202 ± 25 m.y.