Minnesota's Geology
Minnesota's Geology

Author: Richard W. Ojakangas

Publisher: U of Minnesota Press

Published: 1982

Total Pages: 277

ISBN-13: 1452902038

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Have you ever wondered how the Mississippi River was formed? Or why shark teeth have been found in the Iron Range of the Upper Midwest? Towering mountain ranges, explosive volcanoes, expansive glaciers, and long-extinct forms of both land and sea life were an important part of Minnesota's ancient history. Today the evidence of this remarkable heritage is revealed in the state's rocky outcroppings, stony soils, and thousands of lakes.

Precambrian: Conterminous U.S.
Precambrian: Conterminous U.S.

Author: John C. Reed, Jr.

Publisher: Geological Society of America

Published: 1993

Total Pages: 752

ISBN-13: 081375447X

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This wide-ranging discussion of Precambrian rocks includes contributions from a diverse array of authors actively engaged in investigations of various aspects of U.S. Precambrian geology. Summary discussions by the editors of the five major chapters place these contributions in a logical regional framework.