. The elements of geology, for popular use : containing a description of the geological formations and mineral resources of the United States. Geology; Geology. 126 FAULTS AND DIKES. Such phenomena have been called faults, and they exist in England and many other parts of Europe to a much greater extent than in this country. The following cut will represent the manner in which the coal-measures are sometimes elevated :* Fig. 36. 0/~~\0. A £ 33 JE C 112 X> The preceding cut represents the section of a coal- field in England, several miles in extent, divided into four compartments, A, B, C, D
. The elements of geology, for popular use : containing a description of the geological formations and mineral resources of the United States. Geology; Geology. 126 FAULTS AND DIKES. Such phenomena have been called faults, and they exist in England and many other parts of Europe to a much greater extent than in this country. The following cut will represent the manner in which the coal-measures are sometimes elevated :* Fig. 36. 0/~~\0. A £ 33 JE C 112 X> The preceding cut represents the section of a coal- field in England, several miles in extent, divided into four compartments, A, B, C, D, by faults, which have raised the strata to different depths from the surface. In the part of the field (A), the main body of coal, X, is 900 feet from the surface, and is cov- ered by various strata of sandstone and shale (Nos. 1, 2, 3, &c). In the part B, the same bed of coal, X, is raised to within 200 feet of the surface, and the strata above are entirely wanting. In the part C, the coal, X, is 700 feet from the surface, and the strata No. 2 is again seen over the coal. In D the coal is brought within 200 feet of the surface, and only a little of the strata 5 is seen. Another thing worthy of notice is, that the surface of the ground above these dislocations is always level, showing that the strata which had been upheaved had been removed by some cause. For example, the part of the coal-field marked B in the above cut has been ^ Bakewell's Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lee, Charles A. (Charles Alfred), 1801-1872; Draper, Daniel, 1841-1931, donor. DSI. New-York : Harper & Brothers
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Keywords: ., bookcentury1800, bookpublishernewyorkharperb, booksubjectgeology
