1)8 ANNAL8 NEW YORK ACADEMY OF SCIENCES 



Darton (1908, 1) gives the following section at Ked Mountain: 



Feet 



Bluish shales 40 



Limestone 1 



Bluish shales 50 



Ijimestoue 2 



Bluish shales 36 



128 



'"The Morrison formation outcrops on the west bank of Laramie River 

 just below the ridge a mile northwest of Laramie. There are 3 feet of 

 dark shale at base, then 20 feet of soft, massive light colored sandstone, 

 and at top 10 feet of gray shale with several thin, slabby limestone layers, 

 one of which is pebbly, and a thin layer of gray sandstone. In slopes 

 liA to 2 miles south-southwest of Howell station are soft, massive buff 



"-■■'--•«•"«■•-■' 



t..l,A l ,avLvJ.-,J.-.-. l .yJ-.,l-.l 



Fig. 61. — Section of the Morrison forma- 

 tion on the east slope of the ridge west 

 of Doicney Soda Lakes, Wyoming. 



1. — Cloverly ; 2. — Morrison. Scale, 125 

 feet to 1 inch. (Darton.) 



I<"iG. 62. — Section of the Morrison forma- 

 tion on the South Fork of Horse Creek 

 (east of the Laramie Mountains), Wyo- 



Scale, 125 feet to 1 inch. (Darton.) 



sandstones overlain by typical gray and greenish gray massive shale or 

 clay with thin limestone, cherty, and sandstone layers. One of the latter 

 is 2 to 3 feet thick. At the top are very dark shales, which have been 

 prospected for coal; these are overlain by coarse Cloverly sandstone" 

 (Darton, 1908, 1). 

 Darton also gives the following section of the Morrison formation on 



the east slope of the ridge west of Downey Soda Lakes : 



Feet 

 Cloverly sandstones and shales. 



Drab to olive green shale 30 



Soft, coarse-grained, disintegrated sandstone, with calcareous matrix, 



containing teeth and bones 6 



Drab to blue shale , 15 



