Author: James A. Munter
Publisher:
ISBN:
Category : Aquifers
Languages : en
Pages : 72

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Book Description

Author: Greg A. Ludvigson
Publisher:
ISBN:
Category : Dakota Aquifer
Languages : en
Pages : 60

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Book Description
"The controlled pump tests have shown in each case that the Dakota aquifer is capable of sustaining the required water withdrawals for sprinkler irrigation at the test sites. Long-term effects of high yield pumpage cannot yet be predicted with certainty, because of the relatively short period of record"--p. 37.

Author: Donna L. Runkle
Publisher:
ISBN:
Category : Aquifers
Languages : en
Pages : 140

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Book Description

Author: George W. Shurr
Publisher: Geological Society of America
ISBN: 081372287X
Category : Science
Languages : en
Pages : 271

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Book Description
Contains papers on cretaceous rocks in the northern Rocky Mountains, the Great Plains region, the Gulf Coastal Plain of eastern Alabama, and southwestern Minnesota; the Dakota formation; evolutionary and paleological implications of fossil plants from the lower cretaceous Cheyenne sandstone; and fau

Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 64

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Author: Iowa Geological Survey
Publisher:
ISBN:
Category : Water-supply
Languages : en
Pages : 144

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Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 76

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Author: R. E. Hansen
Publisher:
ISBN:
Category : Alluvium
Languages : en
Pages : 598

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Book Description

Author: Wayne I. Anderson
Publisher: University of Iowa Press
ISBN: 9781587292675
Category : History
Languages : en
Pages : 444

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Book Description
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.

Author: New Mexico Geological Society
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 252

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Book Description