Author: Nelson Horatio Darton
Publisher:
ISBN:
Category : Big Horn Mountains (Wyo. and Mont.)
Languages : en
Pages : 244

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Author: N. H. DARTON
Publisher:
ISBN: 9781033208168
Category :
Languages : en
Pages : 0

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Author: Kirk Johnson
Publisher: Fulcrum Publishing
ISBN: 1936218186
Category : History
Languages : en
Pages : 292

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Sponsored by a grant from the National Science Foundation to the Denver Museum of Natural History. Ever wondered what the ground below you was like millions of years ago? Merging paleontology, geology, and artistry, Ancient Wyoming illustrates scenes from the distant past and provides fascinating details on the flora and fauna of the past 300 million years. The book provides a unique look at Wyoming, both as it is today and as it was throughout ancient history—at times a vast ocean, a lush rain forest, and a mountain prairie.

Author: Nelson Horatio Darton
Publisher:
ISBN:
Category :
Languages : en
Pages : 129

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Author: C. E. Whipkey
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 28

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Fluvial and lacustrine-dominated clastic sedimentary rocks as thick as 1,800 m (6,000 ft) comprise the Paleocene Fort Union Formation and the Eocene Wasatch Formation of the western Powder River Basin in northeastern Wyoming and southeastern Montana. The systematic mineralogy of 45 samples of channel-fill sandstone from this sequence reflects the uplift and erosion of the Bighorn Mountains. Samples were collected to study vertical changes in the mineralogy of lower Tertiary sandstones adjacent to the Bighorn Mountains, lateral variations in the composition of the upper Paleocene Tongue River Member of the Fort Union Formation along the eastern front of the mountains, and variations in the composition of equivalent upper Paleocene sandstones of the central and western parts of the basin. Vertical changes in the mineralogy of a succession of Paleocene and Eocene sandstone units adjacent to the Bighorn Mountains most likely were produced by uplift and sequential erosion of the rocks that formerly overlaid the mountains. Uplift probably began in the middle Paleocene, during deposition of the Lebo Member of the Fort Union Formation, and continued into the Eocene. Differences in the mineralogy of the sandstone units along the western edge of the Powder River Basin that correspond to differences in the rock types now exposed along the crest of the Bighorn Mountains suggest that much of the erosional degradation of the Bighorn Mountains occurred during an early Tertiary tectonic episode. Lateral changes in the suite of unstable detrital grains within the Tongue River Member are compatible with facies and paleotransport studies that indicate a substantial eastward flux of detritus of early Tertiary age from the Bighorn Mountains into the central Powder River Basin.

Author: Helen M. Beikman
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 178

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Author: N. H. Darton
Publisher:
ISBN: 9781331524397
Category : Science
Languages : en
Pages : 230

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Book Description
Excerpt from Geology of the Bighorn Mountains About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Author: Cassius Asa Fisher
Publisher:
ISBN:
Category : Bighorn Basin (Mont. and Wyo.)
Languages : en
Pages : 116

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Author: Ken Keffer
Publisher: Rowman & Littlefield
ISBN: 1493022288
Category : Sports & Recreation
Languages : en
Pages : 257

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Book Description
From short scenic day trips to multi-day backpacking excursions, Hiking Wyoming’s Bighorn Mountains covers dozens of trails throughout the region including lands of the Bighorn National Forest, the Cloud Peak Wilderness Area, as well as surrounding state and federal lands. Written by outdoor enthusiast and author, Ken Keffer, Hiking Wyoming's Bighorn Mountains takes new and veteran hikers alike through the beautiful alpine lakes and wilderness of northern Wyoming.

Author: N. H. Darton
Publisher: Legare Street Press
ISBN: 9781015630833
Category : Political Science
Languages : en
Pages : 0

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Book Description
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 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. 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.