Contributions to Economic Geology, 1907, Issue 341U.S. Government Printing Office, 1909 - Geology, Economic |
Contents
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Common terms and phrases
Air-dried sample analyses anticline base bed in sec beds of coal bench Bighorn Basin bituminous bony Bridger British thermal units brown Bull Mountain Butte Calories carbonaceous Clay coal beds coal field coal group coal-bearing rocks Colorado contains County Creek Cretaceous Dietz district Divide Basin drab Eagle sandstone east escarpment exposed exposure fault feet thick Fixed carbon folio following section Geologic Atlas U. S. gray inches thick Laramie formation lignite Limestone locality located lower Mancos Meeteetse Mesa Mesaverde coal Mesaverde formation Miles City mines Montana northeast outcrop places prospect Prox Railroad Red Lodge region ridges Rock Springs sandstone sandy Section of coal shaly side slope strata subbituminous Sulphur surface Survey syncline Tertiary thin beds Tongue River Total coal U. S. Geol unconformity Union Pacific Railroad upper valley vicinity Volatile matter Wasatch workable coal workable thickness Wyoming Yampa
Popular passages
Page 266 - The major axis is approximately 90 miles long and trends nearly due north and south close to the west limb of the dome. The beds along the west limb dip from 15° to 30° W.; those along the east limb dip from 5° to 10° E. The minor axis is approximately 40 miles long, extending across the dome in an east-west direction, passing through Rock Springs and a point 3 miles north of Black Buttes. Several small anticlines and synclines are developed upon the main dome, but for the most part they are...
Page 420 - Report on the operations of the coal-testing plant of the United States Geological Survey at the Louisiana Purchase Exposition, St. Louis, Mo., 1904.
Page 426 - Economic geology of the Kenova quadrangle, Kentucky, Ohio, and West Virginia, by WC Phalen. Bull. No. 349, 1908.
Page 13 - ... of such a size as to yield at least 5 pounds of coal per foot of thickness of coal bed — that is, 5 pounds for a bed 1 foot thick, 10 pounds for a bed 2 feet thick, 20 pounds for a bed 4 feet thick, etc. •1. All material encountered in such a cut should be included in the sample, except partings or binders more than three-eighths inch in thickness and lenses or concretions of sulphur or other impurities greater than 2 inches in maximum diameter and one-half inch in thickness.
Page 13 - In order to make determinations of the loosely held moisture more uniform and definite, a special drying oven has been designed and introduced into the laboratory. In this oven samples of several pounds weight can be dried in a gentle current of air, raised from 10° to 20° above the temperature of the laboratory. In this way the coal is...
Page 151 - By E. WESLEY SHAW. INTRODUCTION. The Glenrock coal field, in the east-central part of Wyoming, comprises the southern end of a great area of coal-bearing rocks, the Fort Union region, which covers the northeastern part of Wyoming, most of the eastern half of Montana, and the western half of North Dakota. (See fig. 4.) The principal towns in this field are Casper .', Flo. 4.— Index map showing location of Glenrock coal field, Wyoming.
Page 65 - Careful observations, however, disclose a slight and con-' sistent dip of 1° to 3° in a northeasterly direction on the southwest margin of the field, but this dip flattens toward the mountains and turns northward at their eastern extremity. On the northeast side of the mountains near the head of Fattig Creek, the rocks dip slightly toward the southwest, and near Roundup the dip in this direction is very pronounced. Thus the structure of the field so far as surveyed suggests a gentle syncline plunging...
Page 283 - County and bids fair to push westward not far from the lower Yampa and White River fields in the near future. An extension of the Uintah Railway has been surveyed from Dragon to Vernal, Utah, crossing the projected route of the "Moffat road
Page 435 - Acciclent-Grantsville folio, Maryland-Pennsylvania-West Virginia; description, by GC Martin. Geologic Atlas US, folio 160, 1908, pp. 11-13. WYOMING. The coal fields of Wyoming, by GC Hewitt. Mineral Resources US for 1893, 1894, pp. 412-414. A geological reconnaissance in northwest Wyoming, by GH Eldridge. Bull. No. 119, 1894. Coal, pp. 49-62. Coals and Coal Measures of Wyoming, by WC Knight. Sixteenth Ann. Rept., pt. 4, 1895, pp. 208-215. Field observations in the Hay Creek coal field, by WP Jenney....
Page 435 - Paper 25. 1904, pp. 16-17. Gives brief description of coal beds and a coal analysis. Coal of the Bighorn basin, in northwest Wyoming, by CA Fisher. Bull. No. 225, 1904, pp. 345-362. Newcastle folio, Wyoming-South Dakota, description, by NH Darton. Geologic Atlas US, folio 107, 1904, pp. 8-9. The coal of the Black Hills, Wyoming, by NH Darton. Bull.