The Geology Of The Head Of Chesapeake Bay (1888) (Paperback)

General Books publication date: 2009 Original publication date: 1888 Original Publisher: Govt. Print. Off. Subjects: Geology Science / Earth Sciences / General Science / Earth Sciences / Geology Notes: This is a black and white OCR reprint of the original. It has no illustrations and there may be typos or missing text. When you buy the General Books edition of this book you get free trial access to Million-Books.com where you can select from more than a million books for free. Excerpt: M-oee.] WESTERXJrOST EXPOSURES. 565 EXPOSURES IN THE PIEDMONT PLATEAU. 1. Lapidam Creek. -- A number of natural and artificial sections, fairly representing the geology of the Piedmont plateau, flanking the south side of the Susquehanna, occur along this creek. Generalizing these, it may be said that the terrane is granite and associated horn- blendic and rarely chloritic schists, vertical or dipping south-southeast at high angles, with occasional veins of quartz. The superficial deposit on summits and slopes is a red. residuary clay, derived from the decay of the crystalline rocks, reaching a maximum observed thickness of ten or twelve feet. The upper valleys and ravines are lined with alluvium of maximum observed depths of five to eight feet, although where probably thickest its bottom was not seen. The alluvium is largely formed of red, clayey materials washed down from the slopes and in general is more or less sandy. Both the residuary clays and the alluvium contain occasionally angular pebbles or bowlders of local rocks, but absolutely no erratic material occurs at any altitude. The summits of knolls and ridges generally expose obdurate rock: vein quartz, exceptionally siliceous horn- blendic schist, etc. 2. Quarry Point. -- Here a prominent salient, perhaps 200 feet high, is formed of compact, somewhat siliceous, hornblendic schist, dipping south-southeast 75 to 80. The same obdurate stratum finds a general topographic expression in a ridge extending north-northeast f...

General

Imprint:	Kessinger Publishing Co
Country of origin:	United States
Release date:	2010
First published:	2010
Authors:	W. J McGee
Dimensions:	279 x 210 x 8mm (L x W x T)
Format:	Paperback - Trade
Pages:	146
ISBN-13:	978-1-120-88459-6
Categories:	Books > Language & Literature > Literature: texts > Collections & anthologies of various literary forms
LSN:	1-120-88459-4
Barcode:	9781120884596

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