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Author Bornhorst, Theodore J
Title Geology of volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan / by Theodore J. Bornhorst and Rodney C. Johnson
Imprint Washington, D.C. : U.S. G.P.O. ; Denver, CO : For sale by USGS Map Distribution, 1993
Descript iii, 13 p. : ill., maps ; 28 cm
Series Contributions to Precambrian geology of Lake Superior region ; ch. P
U.S. Geological Survey bulletin ; 1904-P
Note Title on p. [4] of cover: Volcanic rocks, south half Ispeming greenstone belt, Michigan
Includes bibliographical references (p. 13)
Subject Volcanic ash, tuff, etc. -- Michigan
Geology, Stratigraphic -- Archaean
Geology -- Michigan
Kitchi Formation
Mona Formation
Alt Author Johnson, R. C. (Rodney C.)
Alt Title Ishpeming greenstone belt, Michigan
Volcanic rocks, south half Ispheming greenstone belt, Michigan
Govt. Doc# I 19.3:1904-P
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