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Professional Paper - United States Geological Survey Volume 14 (Paperback) Loot Price: R456 Discovery Miles 4 560
Professional Paper - United States Geological Survey Volume 14 (Paperback): Geological Survey
Professional Paper - United States Geological Survey Volume 14 (Paperback): Geological Survey

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Professional Paper - United States Geological Survey Volume 14 (Paperback)

Geological Survey

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Loot Price R456 Discovery Miles 4 560

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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. 1903 Excerpt: ... or has been, far too low, and the showing can scarcely be called very creditable to the science. They at least justify the calling of the attention of petrographers to the state of affairs and to the urgent need of reform. It will be noted that the excellent and good analyses together amount to 1.102, or 38.25 per cent of the whole. Of these, the chemists of the United States Geological Survey have made 055, or nearly (50 per cent, while of the 4 )2 excellent ones alone they have made 437, or 88.82 per cent, figures which reveal clearly the preeminent position they hold in this branch of the science." "Of the B55 analyses of Igneous rocks (Including tuffs) given in Bulletin 108.-137 are excellent. v 18 good, 72 fair. 8 poor, and 1 bad. Of these the fair ones were nearly all made in the early days of the laboratory, while the poor and bad ones are thus rated on account of the nonseparation of alumina and iron oxides, 7 of them being of volcanic dust or sanil. As to accuracy nearly all are rated A. It is gratifying to note that the analyses that are now being made by the New South Wales Cieological Survey are of almost equally high standard. Constituents.--The chief constituents are given in horizontal rows on the loft. This is the method employed by Roth, and it was adopted here, rather than an arrangement in vertical columns, because it facilitates reference and for typographical reasons. With these chief constituents are included TiO8, P2O6, and MnO. since these are in general he most important of the minor constituents, and the two former are present in all excellent and good analyses, and in many that are rated fair. BaO is also placed here, because it is so frequently determined in the analyses of the United States Geological Survey, and to s...


Imprint: Rarebooksclub.com
Country of origin: United States
Release date: March 2012
First published: March 2012
Authors: Geological Survey
Dimensions: 246 x 189 x 3mm (L x W x T)
Format: Paperback - Trade
Pages: 58
ISBN-13: 978-1-130-76801-5
Barcode: 9781130768015
Categories: Books
LSN: 1-130-76801-5

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