Iowa Geology

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Pt I County And Regional Geology Geology Of The Middle Region Of Western Iowa And Other Counties By O H St John Northwestern Iowa Middle Region Of Northern Iowa Geology Of The Coal Counties By C A White Pt Ii Mineralogy Lithology And Chemistry Peat And Petroleum Gypsum And Other Sulphates Of The Alkaline Earths Building Materials Metals And Miscellaneous Substances By C A White Chemistry By R Emery Appendices A Railroad Elevations By Civil Engineers B Catalogue Of Birds By J A Allen C Land Surveys By C W Irish

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Author : Iowa Geological Survey
language : en
Publisher:
Release Date : 1870

Pt I County And Regional Geology Geology Of The Middle Region Of Western Iowa And Other Counties By O H St John Northwestern Iowa Middle Region Of Northern Iowa Geology Of The Coal Counties By C A White Pt Ii Mineralogy Lithology And Chemistry Peat And Petroleum Gypsum And Other Sulphates Of The Alkaline Earths Building Materials Metals And Miscellaneous Substances By C A White Chemistry By R Emery Appendices A Railroad Elevations By Civil Engineers B Catalogue Of Birds By J A Allen C Land Surveys By C W Irish written by Iowa Geological Survey and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1870 with Geology categories.

Iowa Geological Survey

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Author :
language : en
Publisher:
Release Date : 1893

Iowa Geological Survey written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1893 with Geology categories.

Iowa S Geological Past

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Author : Wayne I. Anderson
language : en
Publisher: University of Iowa Press
Release Date : 1998

Iowa S Geological Past written by Wayne I. Anderson and has been published by University of Iowa Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with History categories.

Iowa's rock record is the product of more than three billion years of geological processes. The state endured multiple episodes of continental glaciation during the Pleistocene Ice Age, and the last glacier retreated from Iowa a mere (geologically speaking) twelve thousand years ago. Prior to that, dozens of seas came and went, leaving behind limestone beds with rich fossil records. Lush coal swamps, salty lagoons, briny basins, enormous alluvial plains, ancient rifts, and rugged Precambrian mountain belts all left their mark. In "Iowa's Geological Past, " Wayne Anderson gives us an up-to-date and well-informed account of the state's vast geological history from the Precambrian through the end of the Great Ice Age. Anderson takes us on a journey backward into time to explore Iowa's rock-and-sediment record. In the distant past, prehistoric Iowa was covered with shallow seas; coniferous forests flourished in areas beyond the continental glaciers; and a wide variety of animals existed, including mastodon, mammoth, musk ox, giant beaver, camel, and giant sloth. The presence of humans can be traced back to the Paleo-Indian interval, 9,500 to 7,500 years ago. Iowa in Paleozoic time experienced numerous coastal plain and shallow marine environments. Early in the Precambrian, Iowa was part of ancient mountain belts in which granite and other rocks were formed well below the earth's surface. The hills and valleys of the Hawkeye State are not everlasting when viewed from the perspective of geologic time. Overall, Iowa's geologic column records an extraordinary transformation over more than three billion years. Wayne Anderson's profusely illustrated volume provides a comprehensive and accessible survey of the state's remarkable geological past.