Physics of the Earth's Crust
Physics of the Earth's Crust
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In our eReader you can find the full English version of the book. Read Physics of the Earth's Crust 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 Physics of the Earth's Crust
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Daubr^, "Bulletin de la Soci^t^ de France," 2ce Sdrie t. zxyiii. p. 363.
Stance du 7 Sep. 1871.
a «* Nature," Vol. xi. p. 116. Dec. 10, 1874.
Digitized by Google CH. XV.] COMPRESSION AND VOLCANIC ACTION. 207 the pre-existing crust. But the solidified lava is a new ac- cession to it.
If 2 (/) be the volume of the lava injected into the fissures, we shall have by the figure, A;i + S(/)=A:Z + S(a)-:S(6) + 2()8)-:S(a), or 2(/) = S(a)-2(6)+2()8)-S(a).
If 6 were the compression which would produce a ...similar tract out of the length I and thickness k of crust we perceive from this expression that We have estimated the value of e to be in the case of nature* about 0*02 ; taking the thickness of the crust as 25 miles. With these values we get 2(/) = J?; that is to say the vertical sectional area of the dykes, occurring in each horizontal mile of crust 25 miles thick, would be half a square mile, or one-fiftieth of the whole sectional area. This does not appear unreasonable, especially when we remember that the dykes will be most numerous and widest in the lower parts of the crust, which are probably never brought under our observation.
What to read after Physics of the Earth's Crust?
You can find similar books in the "Read Also" column, or choose other free books by Osmond Fisher to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Daubr^, "Bulletin de la Soci^t^ de France," 2ce Sdrie t. zxyiii. p. 363.
Stance du 7 Sep. 1871.
a «* Nature," Vol. xi. p. 116. Dec. 10, 1874.
Digitized by Google CH. XV.] COMPRESSION AND VOLCANIC ACTION. 207 the pre-existing crust. But the solidified lava is a new ac- cession to it.
If 2 (/) be the volume of the lava injected into the fissures, we shall have by the figure, A;i + S(/)=A:Z + S(a)-:S(6) + 2()8)-:S(a), or 2(/) = S(a)-2(6)+2()8)-S(a).
If 6 were the compression which would produce a ...similar tract out of the length I and thickness k of crust we perceive from this expression that We have estimated the value of e to be in the case of nature* about 0*02 ; taking the thickness of the crust as 25 miles. With these values we get 2(/) = J?; that is to say the vertical sectional area of the dykes, occurring in each horizontal mile of crust 25 miles thick, would be half a square mile, or one-fiftieth of the whole sectional area. This does not appear unreasonable, especially when we remember that the dykes will be most numerous and widest in the lower parts of the crust, which are probably never brought under our observation.
What to read after Physics of the Earth's Crust?
You can find similar books in the "Read Also" column, or choose other free books by Osmond Fisher to read onlineMoreLess
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