This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1811 edition. Excerpt: ...information on this important topic shall be brought before the reader in one point of view. ' During the journey to Tucuman we found the mountains composed of primitive granite, but as we proceeded, the granite became intermixed with argillaceous slate of various colours; that however which chiefly ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1811 edition. Excerpt: ...information on this important topic shall be brought before the reader in one point of view. ' During the journey to Tucuman we found the mountains composed of primitive granite, but as we proceeded, the granite became intermixed with argillaceous slate of various colours; that however which chiefly predominates in the Cordilleras is of a bluish cast, as far at least as we had an opportunity of examining them. Strata of lime-stone, and large masses of ferruginous sand-stone, are in many places super-1 incumbent on the argillaceous slate. We likewise found on the road coal, gypsum, and rock salt; the last even on the summits of the most elevated ridges." In the bed of the river Rosario he likewise observed blue clay slate; and he was surprised to find the highest snow-capt mountains, within nine miles of Potosi, covered with a pretty thick Stratum of granitic stones, rounded by the action of water; while there is a continual descent to Tucuman, where the granitic ridge ends: and from Tucuman to Potosi it consists of simple clay slate. " The mountain Potosi, at whose foot the city is built, resembles a sugar-loaf: it is almost eighteen miles in circumference, and chiefly composed of a yellow very firm argillaceous slate, full of veins of ferruginous quartz, in which silver ore, and sometimes brittle vitreous ore, are found interspersed." On his journey from Potosi to Lima, he found at Alcacado clay slate, interspersed with masses of granite; and afterwards red sand-stone on the clay slate. They afterwards alternate, and the slate is covered with thin moss. '; The rich city of La Paz is built at the bottom of the highest part of the Andes, covered with everlasting snow. In a fragment of the rock, being a glutenite of yellow clay and rounded flints, ...
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Add this copy of Petralogy a Treatise on Rocks Volume 1 to cart. $27.89, new condition, Sold by Books2anywhere rated 5.0 out of 5 stars, ships from Fairford, GLOUCESTERSHIRE, UNITED KINGDOM, published 2013 by Hardpress Publishing.
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Add this copy of Petralogy: A Treatise on Rocks Volume 1 to cart. $35.13, new condition, Sold by Booksplease rated 4.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2013 by Hardpress Publishing.
Add this copy of Petralogy a Treatise on Rocks Volume 1 to cart. $42.78, new condition, Sold by Paperbackshop rated 4.0 out of 5 stars, ships from Bensenville, IL, UNITED STATES, published 2013 by Hardpress Publishing.
