The Edinburgh New Philosophical Journal
Format: Paperback
ISBN13: 9780217954174
Paperback|9780217954174
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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: II. The hypothesis which supposes the temperature of the earth gradually to increase towards the centre, to a red and ickite heat, explains in a satisfactory manner (according to the present slate of science) volcanic phenomena cs well as earthquahes. If the heat of the earth continually increases with the depth, the rocks must at a certain depth be in a state of fusion. But since they possess such various degrees of fusibility, the more fusible rocks must be in a liquid state, at depths in which the less fusible ones are still solid. At certain depths there must, consequently, be masses of melted rocks, enclosed in the solid rock, in the same manner as iron ores are melted and reduced in the less fusible masses of which blast furnaces or crucibles are composed. These depths must, according to the above hypothesis, be looked upon as the seat of volcanic action. The crystalline rocks are the most easy of fusion on account of their containing alkalies, which indeed are not wanting in any of them. So that, in general, the more abundantly alkaline minerals, as felspar, mica, leucite,
| ISBN-13 | 9780217954174 |
|---|---|
| ISBN-10 | 0217954170 |
| Weight | 1.16 Pounds |
| Dimensions | 9.00 x 6.00 x 0.80 In |
| List Price | $24.95 |
| Format | Paperback |
|---|---|
| Pages | 358 pages |
| Publisher | |
| Published On | 2009-09-01 |
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