Oil Finding An Introduction to the Geological Study of Petroleum
The book Oil Finding An Introduction to the Geological Study of Petroleum was written by author Edward Hubert Cunningham Craig Here you can read free online of Oil Finding An Introduction to the Geological Study of Petroleum book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Oil Finding An Introduction to the Geological Study of Petroleum a good or bad book?
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Every phenomenon of an intrusive dyke or vein of igneous rock is simulated by these intrusive bitumens, and veins may be seen with margins of columnar structure and a central portion of the lustrous conchoidal variety, which represents a later intrusion. The percentage of petrolene also increases towards the centre of every vein, and further increases in analogous parts of the same vein as it is traced to deeper levels, while a vein that does not crop out at the surface generally contains a gre...ater proportion of petrolene than one that is exposed. These facts prove that there is a gradual loss of volatile constituents, and a gradual drying-up or inspissation of the mineral towards the sides of the vein and towards the INDICATIONS OF PETROLEUM 113 surface. Thus a specimen from the 50-foot level in Marbella Mine can be compared with a specimen from the same vein at a depth of 125 feet, the analyses being by Professor Carmody : From 50 From 125 feet level feet level Water . . ':" > 0'65 .
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