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A Preliminary Report on the Corundum Deposits of Georgia Volume 2 epub

A Preliminary Report on the Corundum Deposits of Georgia Volume 2 epub

A Preliminary Report on the Corundum Deposits of Georgia Volume 2.cFrancis Plaisted King
A Preliminary Report on the Corundum Deposits of Georgia Volume 2
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Author: Francis Plaisted King
Page Count: 40 pages
Published Date: 01 May 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781235890963
Download Link: A Preliminary Report on the Corundum Deposits of Georgia Volume 2
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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. 1894 Excerpt: ...These facts are brought out in the following figure: --Fia. 5. Ideal geological section, showing the degradation of the tops of folds, and the direction of the force producing them. This figure serves, also, to illustrate the method of determining the direction of force in simple earth movements. The longer slope of the fold is always toward the moving force; and, after erosion has removed the tops of the folds, only the longer slope remains, as the dip of the strata. The structural features, which have been noted, may then be briefly summarized as follows: --1. The "Cartersville Fault," which marks a time interval between the deposition of the semi-crystalline rocks of the Crystalline Belt and the Oostanaula Shales of the Paleozoic. 2. The apparent perfect transition between the semi-crystalline and the holo-crystalline rocks. 3. The absence, in the semi-crystalline area, of the magnesiumcorundum deposition, which characterizes the holo-crystalline area. 4. The constancy of strike and dip of the rocks of the semicrystalline and holo-crystalline areas. 5. The difference in degree of dip between the rocks of the semi-crystalline and holo-crystalline areas. 6. The absence of regional metamorphism in the eruptive portions of the holo-crystalline area, and its presence in the semi-crystalline. 7. The evidence, which testifies to an earth movement, preceding, and a continuous earth movement, following the deposition of the rocks of the semi-crystalline area. From these observations on the structure of the Crystalline Belt, three hypotheses present themselves, viz.: --1. That the semi-crystalline area is of the same age as the contact member of the Paleozoic, and that the holo-crystalline area is Archaean. 2. That the Crystalline Belt is older, than the co...

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