Geology of Sangamon County
Geology of Sangamon County
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In our eReader you can find the full English version of the book. Read Geology of Sangamon County Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Geology of Sangamon County
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The con- structive agencies which recorded the passing of the millenniums in- volved in those periods, were as active and extended as the agencies whose work has been recorded in the rock strata underlying the prairies of San- gamon county.
ORIGIN OF THE EOCKS.
None of the rocks in Sangamon county were formed by fire as were many rocks in mountain regions. Either wind or water were the agents active in their construction. The water in which they were deposited was cold, sometimes salty, other t...imes fresh. Sometimes it flowed in a river of water or of ice. At other times it constituted a lake or an ocean. The kind of rock and the fossil remains contained therein lead to such a conclusion. Sandstone, shale and limestone are the only kind of rocks native to the county. The sandstones were formed along shores of great lakes or oceans, as they are being formed today when waves and winds carry away soluble or light material from the debris of the coast, leaving the heavier and insoluble substances, usually particles of quartz, sorted according to size.
What to read after Geology of Sangamon County?
You can find similar books in the "Read Also" column, or choose other free books by A R Alja Robinson Crook to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The con- structive agencies which recorded the passing of the millenniums in- volved in those periods, were as active and extended as the agencies whose work has been recorded in the rock strata underlying the prairies of San- gamon county.
ORIGIN OF THE EOCKS.
None of the rocks in Sangamon county were formed by fire as were many rocks in mountain regions. Either wind or water were the agents active in their construction. The water in which they were deposited was cold, sometimes salty, other t...imes fresh. Sometimes it flowed in a river of water or of ice. At other times it constituted a lake or an ocean. The kind of rock and the fossil remains contained therein lead to such a conclusion. Sandstone, shale and limestone are the only kind of rocks native to the county. The sandstones were formed along shores of great lakes or oceans, as they are being formed today when waves and winds carry away soluble or light material from the debris of the coast, leaving the heavier and insoluble substances, usually particles of quartz, sorted according to size.
What to read after Geology of Sangamon County?
You can find similar books in the "Read Also" column, or choose other free books by A R Alja Robinson Crook to read onlineMoreLess
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