A Compend of Geology
A Compend of Geology
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In our eReader you can find the full English version of the book. Read A Compend of Geology 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 A Compend of Geology
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In the second place, 3,000° is the fusing point under atmospheric pressure ; but under the enormous pressure of thirty to fifty miles of rock, the fusing-point would probably be much hi^er. Taking these two things into account, it seems certcdn that, if there be a universal interior liquid at all, the solid shell is much thicker than is usually supposed, and ^\tVL probable that there is no uni- versal interior liquid at all — and that volcanoes are openings into local reservoirs, not into a uni...versal sea of liquid matter.
Digitized by VjOOQ IC 122 DYNAMICAL GEOLOGY.
Recently there has been a tendency among geologists to accept a compromise between these extremes. It is now well known that rocks, under the combined influence of heat and water ^ fuse at a much lower temperature. This, to distinguish it from true dry fusion, is called hydrother^ mat fusion. While the temperature of true fusion is not less than 3,000®, that of hydrothermal fusion is only 600® to 800^. Now, water certainly penetrates the earth to great depths.
What to read after A Compend of Geology?
You can find similar books in the "Read Also" column, or choose other free books by Leconte, Joseph, 1823-1901 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In the second place, 3,000° is the fusing point under atmospheric pressure ; but under the enormous pressure of thirty to fifty miles of rock, the fusing-point would probably be much hi^er. Taking these two things into account, it seems certcdn that, if there be a universal interior liquid at all, the solid shell is much thicker than is usually supposed, and ^\tVL probable that there is no uni- versal interior liquid at all — and that volcanoes are openings into local reservoirs, not into a uni...versal sea of liquid matter.
Digitized by VjOOQ IC 122 DYNAMICAL GEOLOGY.
Recently there has been a tendency among geologists to accept a compromise between these extremes. It is now well known that rocks, under the combined influence of heat and water ^ fuse at a much lower temperature. This, to distinguish it from true dry fusion, is called hydrother^ mat fusion. While the temperature of true fusion is not less than 3,000®, that of hydrothermal fusion is only 600® to 800^. Now, water certainly penetrates the earth to great depths.
What to read after A Compend of Geology?
You can find similar books in the "Read Also" column, or choose other free books by Leconte, Joseph, 1823-1901 to read onlineMoreLess
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