The Moraines Of The Missouri Coteau And Their Attendant Deposits

Author : James Edward Todd
Publisher : Rarebooksclub.com
ISBN 13 : 9781230075204
Total Pages : 32 pages
Book Rating : 4.0/5 (752 download)

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Download or read book The Moraines of the Missouri Coteau, and Their Attendant Deposits written by James Edward Todd and published by Rarebooksclub.com. This book was released on 2013-09 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1896 edition. Excerpt: ...stony toward the southeast till it forms the eastern side of the Wessington Hills. In order to give an idea of the origin of these hills and at the same time a conception which may be more easily remembered, we may offer the following theory: Conceive four narrow lobes of ice pushing from the north-northeast, three of them west of the slender interlobe which extends to the northern side of the plateau, and the fourth cast of that ridge between it and Turtle Point. Of the first three, the easternmost is obstructed by a ridge over which it does not reach. The other two break over it, become confluent, and, passing into the valley of Boxelder Creek, turn with it toward the southeast and pass in front of the third lobe, coming nearly in contact with the fourth. As a result of this adjustment of the ice, the drainage from the third and adjacent sides of the other lobes is discharged southward between them into Crow Creek. This interpretation seems to be corroborated by the currents along the southeastern sides of all these island-like areas of unusually stony ridges resembling osars, and also by a prominent southward drainage channel in the triangular area, as well as by the great abundance of sand and gravel in the whole southern part of this region. These stony hills lie upon a terrace which shows more or less distinctly at different points. THE DEPOSITS CONNECTED WITH THE OUTER MORAINE. As the Second moraine lies very close to the First, wherever the latter approaches the James Eiver Valley, we need to consider under this head only the region lying on the Missouri side of the Coteau. In the area under consideration this readily divides itself into three areas inside the moraine, viz, the Long Lake loop, the Blue Blanket loop, and the Eee...