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Preliminary Report on the Copper-Bearing Rocks of Douglas County, Wisconsin, 1900 (Classic Reprint) - Brossura
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Excerpt from Preliminary Report on the Copper-Bearing Rocks of Douglas County, Wisconsin, 1900
The method followed in the season's field work was to visit all parts of the two areas above mentioned which were known to have rock outcrops, or in which outcrops might be reasonably expected. In such parts north and south traverses were made at intervals of one-half mile, or more frequently when occasion demanded. Thus, in the region where outcrops occur fre quently, the north and south section lines, the north and south quarter section lines and some of the east and west section lines were followed. The larger streams, and in fact all the streams which might be expected to cut down to the bed rock, were also followed. The outcrops seen were located carefully by pacing, and the position of each was indicated as so many paces north and so many paces west of the southeast comer of the given section. In this manner of locating paces equals one mile. Rock samples were taken from most of these outcrops. In all about 775 rock numbers and a considerably greater num ber of specimens were collected.
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Preliminary Report on the CopperBearing Rocks of Douglas County, Wisconsin, 1900 Classic Reprint
Da: PBShop.store US, Wood Dale, IL, U.S.A.
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PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LW-9781330733509
Quantità: 15 disponibili
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Preliminary Report on the CopperBearing Rocks of Douglas County, Wisconsin, 1900 Classic Reprint
Da: PBShop.store UK, Fairford, GLOS, Regno Unito
Valutazione del venditore 5 su 5 stelle
PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LW-9781330733509
Quantità: 15 disponibili
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Preliminary Report on the Copper-Bearing Rocks of Douglas County, Wisconsin
Print on DemandDa: Forgotten Books, London, Regno Unito
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Paperback. Condizione: New. Print on Demand. This book is a comprehensive overview of the geological history, rock formations, and copper deposits of Douglas County, Wisconsin. The author describes the county's five distinct topographical zones, which correspond to the underlying rock formations. It mainly focuses on the Lower Keweenawan and Upper Keweenawan rocks, including the igneous rocks, conglomerates, sandstones, and shales that make up the region. The author details the characteristics of different rock types, their dip and strike, and methods for distinguishing between flows. The book also delves into the geological structure of the area, including the syncline and the fault that separates the Keweenawan traps from the Lake Superior sandstone. Finally, it provides a detailed geological map of Douglas County and more detailed maps of specific areas where copper ore has been found. This book is an invaluable resource for geologists, mining engineers, and anyone interested in the geology and copper deposits of Douglas County, Wisconsin. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Codice articolo 9781330733509_0
Quantità: Più di 20 disponibili