| | Report (issue) | the Northern Block of the Ishpeming Greenstone Belt, Marquette County, Michigan U.S. GEOLOGICAL SURVEY...the Northern Block of the Ishpeming Greenstone Belt, Marquette County, Michigan By R.C JOHNSON and T.J....the northern block of the Ishpeming Greenstone Belt, Marquette County, Michigan / by R.C. Johnson and T...2. Rocks, Igneous Michigan Marquette County. 3. Geology Michigan Marquette County. I. Bornhorst, Theodore...II. Title. III. Title: Ishpeming Greenstone Belt, Marquette County, Michigan. IV. Series. V. Series: | | | Report (issue) | Volcanic Rocks in the South Half of the Ishpeming Greenstone Belt, Michigan U.S. GEOLOGICAL SURVEY BULLETIN...Volcanic Rocks in the South Half of the Ishpeming Greenstone Belt, Michigan By THEODORE J. BORNHORST and RODNEY...volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan / by Theodore J. Bornhorst and Rodney...Volcanic ash, tuff, etc. Michigan. 2. Geology, Stratigraphic Archaean. 3. Geology Michigan. 4. Kitchi Formation...(Rodney C.) II. Title. III. Title: Ishpeming greenstone belt, Michigan. IV. Series. V. Series: U.S. Geological | | | Report (issue) | Analysis of Archean Rocks in the Negaunee Area, Michigan Constraints on Archean Versus Early Proterozoic...Analysis of Archean Rocks in the Negaunee Area, Michigan Constraints on Archean Versus Early Proterozoic...analysis of Archean rocks in the Negaunee area, Michigan constraints on Archean versus early Proterozoic...Stratigraphic Proterozoic. 3. Geology, Structural Michigan Negaunee Region. I. Bauer, R.L. II. Title. III...Kitchi Schist O4 Mona Schist OS Undifferentiated greenstone OS Compeau Creek Gneiss O6 Dead River pluton | | | Book | Mineralogy of Michigan by E. W. Heinrich updated and revised • by George W. Robinson M By E W~ Hellnr]ch...Museum Michigan Technological University Houghton, Michigan 49931 2004 © MINERALOGY OF MICHIGAN 3 FOREWORD...FOREWORD Michigan has a long and varied geologic history that includes repeated episodes of volcanism...before the first Europeans set foot here. When Michigan became a state in 1837, one of the first actions...and we continue to learn more about them today. Michigan minerals helped to build the state and nation |
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