Transactions . tion, Wyo., on the OregonShort Line railway. The occurrence here is on the west side of a gentle anticline, thewest side of which has been abruptly faulted in the making of theBear River valley. Compared -with other exposures the phosphateformation is thin. At the base is the Weber quartzite, forming thebackbone of the ridge; overlying this is a series of thin, bedded lime-stones about 125 ft. thick. Then comes the phosphate formation, notto exceed 30 ft. thick, covered by the characteristic cherty limestone,the whole dipping about 25° to west and striking north and souththrough
Transactions . tion, Wyo., on the OregonShort Line railway. The occurrence here is on the west side of a gentle anticline, thewest side of which has been abruptly faulted in the making of theBear River valley. Compared -with other exposures the phosphateformation is thin. At the base is the Weber quartzite, forming thebackbone of the ridge; overlying this is a series of thin, bedded lime-stones about 125 ft. thick. Then comes the phosphate formation, notto exceed 30 ft. thick, covered by the characteristic cherty limestone,the whole dipping about 25° to west and striking north and souththrough Sections 2, 11 and 15, T. 21 N., R. 120 W. 6th P. M. So far as developed there seems to be a workable bed from 7 to10 ft. thick, showing a top member of 4 ft. of hard, jaspery red andgreen oily looking rock averaging 74 per cent, bone phosphate sepa-rated by a 5-in. shaly parting from 6 ft. of soft gray oolitic rockrunning as high as 80 per cent, bone phosphate. A NEW PHOSPHATE FIELD IN THE UNITED STATES. 207. Fig. 10.—Phosphate Workings nearcokeville, wyo. Fig. 11.—Surface Workings atcokeville, wyo.
Size: 1745px × 1432px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
