Report on the Geological Survey of the State of Iowa, to the Thirteenth General Assembly, January, 1870

Report on the Geological Survey of the State of Iowa, to the Thirteenth General Assembly, January, 1870 PDF Author: Iowa Geological Survey
Publisher:
ISBN:
Category :
Languages : en
Pages : 462

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Report on the Geological Survey of the State of Iowa, to the Thirteenth General Assembly, January, 1870

Report on the Geological Survey of the State of Iowa, to the Thirteenth General Assembly, January, 1870 PDF Author: Iowa Geological Survey
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 454

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Report on the Geological Survey of the State of Iowa

Report on the Geological Survey of the State of Iowa PDF Author: Iowa Geological Survey
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 456

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Report on the geological Survey of the State of Iowa

Report on the geological Survey of the State of Iowa PDF Author: Charles A. White
Publisher: BoD – Books on Demand
ISBN: 375257948X
Category : Fiction
Languages : en
Pages : 474

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Reprint of the original, first published in 1866.

Report on the Geological Survey of the State of Iowa, to the Thirteenth General Assembly, January, 1870, Containing Results of Examinations and Observations Made Within the Years 1866, 1867, 1868, and 1869

Report on the Geological Survey of the State of Iowa, to the Thirteenth General Assembly, January, 1870, Containing Results of Examinations and Observations Made Within the Years 1866, 1867, 1868, and 1869 PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Iowa's Geological Past

Iowa's Geological Past PDF Author: Wayne I. Anderson
Publisher: University of Iowa Press
ISBN: 9781587292675
Category : History
Languages : en
Pages : 444

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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.

Bulletin of the United States Geological Survey

Bulletin of the United States Geological Survey PDF Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1092

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Bulletin of the United States Geological Survey

Bulletin of the United States Geological Survey PDF Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1058

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Bibliotheca Americana

Bibliotheca Americana PDF Author: Joseph Sabin
Publisher:
ISBN:
Category : America
Languages : en
Pages : 586

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Catalogue of the Library of Congress

Catalogue of the Library of Congress PDF Author: Library of Congress
Publisher:
ISBN:
Category : Library catalogs
Languages : en
Pages : 618

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Contributions to a History of American State Geological and Natural History Surveys

Contributions to a History of American State Geological and Natural History Surveys PDF Author: George Perkins Merrill
Publisher:
ISBN:
Category : Geological surveys
Languages : en
Pages : 642

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George P. Merrill edited and compiled the list of State entries for natural history surveys and/or geological surveys for the individual States. Geological surveys may include references are non-uniform and sporadic by State. The omission of a State or Territory indicates that no public survey of the locality was undertaken during the period covered by this history. The subject matter is arranged alphabetically by States.