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Precambrian Sioux Quartzite at Gitchie Manitou State Preserve, Iowa

Raymond R. Anderson
Raymond R. Anderson
Iowa Geological Survey, Iowa City, Iowa 52242
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January 01, 1987


Gitchie Manitou State Preserve is located in the northwesternmost corner of Iowa, in the W½, Sec. 11, T. 100N., R. 49W., about 9 mi (14,5 km) northwest of Larchwood in Lyon County, Iowa (Fig. 1). The preserve is situated in the valley of the Big Sioux River, which forms the western limits of the preserve and the boundary between Iowa and South Dakota. The highest elevation within the preserve is about 1,286 ft (392 rlevel, about 40 ft (12 m) above river level but about below the elevation of nearby upland areas.

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Figures & Tables


DNAG, Centennial Field Guides

North-Central Section of the Geological Society of America

Donald L. Biggs
Donald L. Biggs
531 Hayward Avenue Ames, Iowa 50010
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Geological Society of America
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Publication date:
January 01, 1987




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