An Introduction to Geology: Comprising the Elements of the Science in Its ...
An Introduction to Geology: Comprising the Elements of the Science in Its ...
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In our eReader you can find the full English version of the book. Read An Introduction to Geology: Comprising the Elements of the Science in Its ... 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 An Introduction to Geology: Comprising the Elements of the Science in Its ...
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We are here to suppose that each shell represents a stratum of coal, and the partitions of clay the earthy strata by which they are separated.
The outer shell represents the lowest bed of coal, which may be many miles in extent. Now if a much larger shell be filled with sand, and the lowest shell be pressed into it, we may consider the large shell to represent limestone, and the sand gritstone ; we shall then have a model of the coal strata in many parts of Eng- land, and their situation over t...he metalliferous lime, with the beds of sandstone by which they are separated from it.
From the inclination or bending of coal strata, they always rise near to the surface in some parts of their course, and would be visible if not covered by soil or gravel. In the intersections formed by rivulets, or by accidental fractures on the sides of hills in a district, the nature of the strata may often be determined, and should be ascertained before any expense be incurred in boftng or sinking for coal.
What to read after An Introduction to Geology: Comprising the Elements of the Science in Its ...?
You can find similar books in the "Read Also" column, or choose other free books by Benjamin Silliman to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
We are here to suppose that each shell represents a stratum of coal, and the partitions of clay the earthy strata by which they are separated.
The outer shell represents the lowest bed of coal, which may be many miles in extent. Now if a much larger shell be filled with sand, and the lowest shell be pressed into it, we may consider the large shell to represent limestone, and the sand gritstone ; we shall then have a model of the coal strata in many parts of Eng- land, and their situation over t...he metalliferous lime, with the beds of sandstone by which they are separated from it.
From the inclination or bending of coal strata, they always rise near to the surface in some parts of their course, and would be visible if not covered by soil or gravel. In the intersections formed by rivulets, or by accidental fractures on the sides of hills in a district, the nature of the strata may often be determined, and should be ascertained before any expense be incurred in boftng or sinking for coal.
What to read after An Introduction to Geology: Comprising the Elements of the Science in Its ...?
You can find similar books in the "Read Also" column, or choose other free books by Benjamin Silliman to read onlineMoreLess
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