Devonian Fishes Of Iowa; Volume 18
Title | Devonian Fishes Of Iowa; Volume 18 PDF eBook |
Author | Charles Rochester Eastman |
Publisher | Wentworth Press |
Pages | 374 |
Release | 2019-04-12 |
Genre | |
ISBN | 9781013024108 |
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Devonian Fishes of Iowa
Title | Devonian Fishes of Iowa PDF eBook |
Author | Charles Rochester Eastman |
Publisher | |
Pages | 414 |
Release | 1908 |
Genre | Fishes, Fossil |
ISBN |
Collected papers
Title | Collected papers PDF eBook |
Author | Erik Andersson Stensiö |
Publisher | |
Pages | 1192 |
Release | 1922 |
Genre | |
ISBN |
Studies from the Dept. of Anatomy
Title | Studies from the Dept. of Anatomy PDF eBook |
Author | |
Publisher | |
Pages | 250 |
Release | 1915 |
Genre | Anatomy, Comparative |
ISBN |
Bulletin
Title | Bulletin PDF eBook |
Author | |
Publisher | |
Pages | 1260 |
Release | 1957 |
Genre | Geology |
ISBN |
Publication
Title | Publication PDF eBook |
Author | |
Publisher | |
Pages | 550 |
Release | 1909 |
Genre | Geology |
ISBN |
Iowa's Geological Past
Title | Iowa's Geological Past PDF eBook |
Author | Wayne I. Anderson |
Publisher | University of Iowa Press |
Pages | 444 |
Release | 1998 |
Genre | History |
ISBN | 9781587292675 |
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.