Paleomagnetic and ⁴°Ar/³⁹Ar geochronologic data from Late Proterozoic mafic dikes and sills, Montana and Wyoming /

Paleomagnetic and ⁴°Ar/³⁹Ar geochronologic data from Late Proterozoic mafic dikes and sills, Montana and Wyoming /

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Bibliographic Details
Author / Creator:Harlan, Stephen S., author.
Imprint:Washington : United States Government Printing Office, 1997.
Description:1 online resource (16 pages) : illustrations, maps.
Language:English
Series:U.S. Geological Survey professional paper ; 1580
U.S. Geological Survey professional paper ; 1580.
Subject:
Geology, Stratigraphic -- Proterozoic.
Geochronometry -- Montana.
Geochronometry -- Wyoming.
Sills (Geology) -- Montana.
Dikes (Geology) -- Wyoming.
Dikes (Geology)
Geochronometry.
Geology, Stratigraphic.
Proterozoic Geologic Period.
Sills (Geology)
Montana.
Wyoming.
Format: E-Resource U.S. Federal Government Document Book
URL for this record:http://pi.lib.uchicago.edu/1001/cat/bib/11597780
Hidden Bibliographic Details
Other authors / contributors:Geissman, John William, author.
Snee, Lawrence W., author.
Geological Survey (U.S.), issuing body.
Notes:"Paleomagnetic and 40Ar/39Ar results from mafic dikes and sills in northwestern Wyoming and western Montana indicate that they were emplaced during a regional magmatic event at 780 to 770 Ma."
Includes bibliographical references (pages 14-16).
Description based on online resource, PDF version; title from PDF title page (USGS, October 16, 2014).
Other form:Print version: Harlan, Stephen S. Paleomagnetic and ⁴⁰Ar/³⁹Ar geochronologic data from Late Proterozoic mafic dikes and sills, Montana and Wyoming
GPO item no.:0624 (online)
Govt.docs classification:I 19.16:1580

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