504 abstracts: geology 



than 30 feet deep. Municipal supplies could be developed from the 

 stratified drift in the Connecticut Valley by sinking gangs of driven 

 wells similar to those successfully used at Brookline, Mass., Brooklyn, 

 N. Y., and Plainfield, N. J., which are described in the report. 



The bedrocks are practically impervious, but they are intensely 

 fractured, and contain numerous water-bearing joints. Wells drilled 

 to depths of 200 or 300 feet rarely fail to intercept a sufficient number 

 of these joints to furnish supplies of water adequate for domestic use. 



A. J. E. 



GEOLOGY. — Experiments on the extraction of potash from Wyomingite. 



R. C. Wells. U. S. Geological Survey Professional Paper 98-D. 



Pp. 4. 1916. 

 This paper describes investigations made in the chemical laboratory 

 of the U. S. Geological Survey to determine the possibility of extract- 

 ing potash from Wyomingite and lava occurring extensively in the 

 Leucite Hills, Sweetwater County, Wyoming. While all the experi- 

 ments described can not be considered as suggestions of commercial 

 possibilities, a record of them may save much repetition of preliminary 

 investigation on the part of private investigators, R. W. S. 



GEOLOGY. — Geology and coal resources of Castle Valley, in Carbon, 

 Emery, and Sevier Counties, Utah. Charles T. Lupton. U. S. 

 Geological Survey Bulletin No. 628. Pp. 86, with 12 plates 

 and 1 figure. 1916. 

 This report describes the geology and coalresources of Castle Valley, 

 a belt of country 10 to 20 miles wide and 80 miles long lying between 

 San Rafael Swell and Wasatch Plateau in central Utah. It includes 

 also general descriptions and sections of those formations outcropping 

 from the interior of the Swell to the top of the Plateau, a stratigraphic 

 distance of more than 11,000 feet. The rocks exposed range from Car- 

 boniferous to Quaternary in age. 



The Ferron sandstone member of the Mancos shale, which var'es 

 greatly in thickness and character, is described and indicated on the 

 maps. At the northeast end of the field it is about 75 feet thick and 

 consists mainly of shaly sandstone containing concretions. It thickens 

 gradually, reaching a maximum of about 800 feet of sandstone, shale, 

 and coal beds near the southwest end of the area described. This 

 sandstone, in the northern part of Castle Valley, is believed to repre- 



