Download or read book Uplift of the Bighorn Mountains Wyoming and Montana written by C. E. Whipkey and published by . This book was released on 1991 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Uplift of the Bighorn Mountains Wyoming and Montana a Sandstone Provenance Study written by C. E. Whipkey and published by . This book was released on 1991 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology of the Bighorn Mountains written by Nelson Horatio Darton and published by . This book was released on 1906 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology of the Beartooth Uplift and Adjacent Basins written by and published by . This book was released on 1986 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Bulletin written by and published by . This book was released on 1983 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Bulletin written by C. E. Whipkey and published by . This book was released on 1983 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology of the Bighorn Mountains written by N H Darton and published by Legare Street Press. This book was released on 2022-10-26 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book New Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1991 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Potentially Favorable Areas for Large yield Wells in the Red River Formation and Madison Limestone in Parts of Montana North Dakota South Dakota and Wyoming written by Lawrence Mend MacCary and published by . This book was released on 1983 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology of the Powder River Basin Wyoming and Montana written by Helen M. Beikman and published by . This book was released on 1962 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Publications of the U S Geological Survey written by and published by . This book was released on 1991 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Range Investigations Bighorn National Forest Wyoming Vol 1 Classic Reprint written by Richard M. Hurd and published by Forgotten Books. This book was released on 2018-04-21 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Range Investigations, Bighorn National Forest, Wyoming, Vol. 1 The Bighorn National Forest is located in north central wyoming, being bounded on the north by the Montana state line (fig. The Forest is entirely within the Big Horn Mountains, although this mountain range extends A0 to 50 miles south and 10 miles north of the Forest boundary. As a result, not more than an estimated two - thirds of the mountain range is within the Forest. South of the Forest, the Big Horn Mountains join the high eastawest range of the Bridger and Owl Creek Mountains. North of the Forest boundary, the Big Horn Mountains end at the canyon of the Big Horn River, north of which the same uplift is continued in the Pryor Mountains, a range of moderate elevation which extends but a short distance (q). In general, the eastern edge of the Forest follows along the face of the mountains, but the western boundary often is above feet on sedimentary formations sloping toward the Big Horn Basin. Underlying the soil mantle and in places outcropping on the surface are both granitic and sedimentary rocks. The granites are extensively exposed in the high mountain areas where the sedimentary layers have been entirely cut away and glacial activity is clearly evident (q). The sedimentary layers consist of sand stone, limestone, shales, and loosely consolidated beds of gravel and sand (iq). The oldest of these sedimentary deposits and the one lying directly on the granite is the Deadwood formation of the Cambrian system. Because of the soft shales in this formation, it has often weathered in long slopes and rounded knobs Bald Mountain is an example (fl). Many of the treeless and brushfree openings or parks on the Medicine Wheel and Tongue Districts (fig. 2) occur on this formation. Sedimentary formations are particularly common on the Tongue, Medicine Wheel, and Paintrock Districts. The other three districts (fig. 1) are characterized for the most part by exposed red and gray granites and soil derived from this parent material. On the Buffalo District, in particular, are found extensive brushfree parks on preglacial deposits of granitic debris (é). 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.
Download or read book Contributions to Geology written by and published by . This book was released on 1987 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Conference in the Bighorn Basin written by University of Wyoming and published by . This book was released on 1947 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Water supply Paper written by and published by . This book was released on 1976 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mesaverde Group Campanian in the Bighorn Basin of Wyoming Montana USA written by Bernd Klug and published by . This book was released on 1994 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cambrian Through Mississippian Rocks of the Powder River Basin Wyoming Montana and Adjacent Areas written by David L. Macke and published by . This book was released on 1993 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multidisciplinary approach to research studies of sedimentary rocks and their constituents and the evolution of sedimentary basins, both ancient and modern.
