Paleomagnetic and ⁴⁰Ar/³⁹Ar geochronologic data from Late Proterozoic mafic dikes and sills, Montana and Wyoming /

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Bibliographic Details
Author / Creator:	Harlan, Stephen S.
Imprint:	Washington : U.S. G.P.O. ; Denver, CO : For sale by U.S. Geological Survey, Information Services, 1997.
Description:	16 p. : ill., maps ; 28 cm.
Language:	English
Series:	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/6510427

Hidden Bibliographic Details
Other authors / contributors:	Geissman, John William. Snee, Lawrence W. Geological Survey (U.S.)
Notes:	Includes bibliographical references (p. 14-16). Available via Internet from the USGS web site. Address as of 9/6/02: http://greenwood.cr.usgs.gov/pub/ppapers/p1580; current access is available via PURL.
GPO item no.:	0624 0624 (online)
Govt.docs classification:	I 19.16:1580

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