Paleomagnetic and 40Ar/39Ar geochronologic data from Late Proterozoic mafic dikes and sills, Montana and Wyoming /
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Other Authors: | , |
Format: | Map |
Language: | English |
Published: |
Washington :
U.S. G.P.O.,
1997.U.S. Geological Survey, Information Services, 1997.
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Series: | U.S. Geological Survey professional paper ;
1580. |
Subjects: |