Soils of the Eastern United States and Their Use
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| Partner: | buecher.de |
| Hersteller: | Forgotten Books (Bonsteel, Jay A.) |
| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from Soils of the Eastern United States and Their Use: The Memphis Silt Loam The Memphis silt loam consists of finely divided silty material, known as the loess, which had its origin in the more northern portion of the central States in conjunction with the glacial invasion of that section. Unlike the other soil types derived from the loess, however, the Memphis silt loam is derived from those deposits that extend southward from the confluence of the Missouri and the Mississippi Rivers almost to the margin of the Gulf of Mexico. In this respect it is unique among loess-derived soil types. This material, originated in connection with the glaciation of the North Central States, was carried southward by the waters resulting from the melting ice, and distributed along the drainage ways through the Mississippi Valley. Thence, it is supposed that a considerable proportion of the material has been reworked and redistributed, through wind action, being deposited principally upon the eastern side of the Mississippi River, from the vicinity of St. Louis, Mo., southward to Baton Rouge, La. It thus comprises a long narrow belt along both sides of the Mississippi River in southern Illinois and eastern Missouri, covering a considerable proportion of the upland in western Kentucky, a belt 50 to 70 miles broad in western Tennessee, a continuous belt, varying from 50 miles in width in northern Mississippi to a narrow strip, 15 to 20 miles broad, where it passes across the southern line of Mississippi into eastern Louisiana and terminates between Baton Rouge and New Orleans. It also occurs covering a considerable territory on the west side of the Mississippi in northeastern Arkansas. Throughout its entire extent this characteristic glacial silt was carried far southward by water action, from a truly glaciated region, and distributed by the action of both wind and water principally over the uplands to the east of the Mississippi River. It covers the various Coastal Plain formations and, in its more northern portion, even the consolidated rocks of the outward edge of the Ozark uplift. The Memphis silt loam has been mapped to the extent of 1,863,290 acres. It has been encountered in 12 separate areas in 6 different States. 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.
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