Minnesota's Geology / Edition 1

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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 important parts 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.

Minnesota's Geology provides a history of the past 3.5 billion years in the area's development. In accessible language, Minnesota-based geologists Richard W. Ojakangas and Charles L. Matsch tell the story of the state's past and offer a guide for those who want to read geological history firsthand from the rocks and landscapes of today.

The book's four sections give a short introduction to geology and Minnesota's place in geologic history; a historic timeline; a look at the metallic minerals, nonmetals, and water present today; and a geologic picture of today's Minnesota arranged in five geographical regions. This book is both a wonderful source of information for rock hounds and the perfect backpacking companion for tourists and outdoor enthusiasts. Lavishly illustrated with color and black-and-white photographs, as well as extensive graphs and maps, Minnesota's Geology will inform and delight for years to come.

Richard W. Ojakangas and Charles L. Matsch are professors in the Department of Geological Sciences at the University of Minnesota, Duluth.

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Editorial Reviews

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Admit you. You've always wanted to know how the Mississippi River was formed. For years, you have wondered about why shark teeth have been found in the Minnesota's Iron Range or wished that someone would unfold a timeline for the state's 3.5 billion-year history. Wait no longer; your prayers have been answered. University of Minnesota geology professors Ojakangas and Matsch have written a intelligent and entertaining account of this mineral-rich region.
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Product Details

  • ISBN-13: 9780816609536
  • Publisher: University of Minnesota Press
  • Publication date: 11/28/1982
  • Edition description: 1
  • Edition number: 1
  • Pages: 257
  • Sales rank: 618,538
  • Product dimensions: 8.50 (w) x 11.00 (h) x 0.60 (d)

Table of Contents

Acknowledgments viii
Preface ix
Part I. Background
Chapter 1. The Briefing 3
Chapter 2. Minnesota's Place in Geologic History 15
Part II. Geologic History
Chapter 3. Early Precambrian Time (4,500 to 2,500 Million Years Ago) 23
Chapter 4. Middle Precambrian Time (2,500 to 1,600 Million Years Ago) 35
Chapter 5. Late Precambrian Time (1,600 to 600 Million Years Ago) 47
Chapter 6. Post-Precambrian Time (600 to 2 Million Years Ago) 63
Chapter 7. The Quaternary Period (2 Million Years Ago to the Present) 97
Part III. Mineral Resources
Chapter 8. Metallic Minerals 125
Chapter 9. Nonmetals, Fuels, and Water 151
Part IV. Regional Geology
Chapter 10. Northeastern Minnesota 161
Chapter 11. Northwestern Minnesota 199
Chapter 12. Central Minnesota 211
Chapter 13. Southwestern Minnesota 223
Chapter 14. Southeastern Minnesota 233
Bibliography 247
Index 253
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