f-< 



218 GEOLOGICAL SURVEY OF THE TERRITORIES. 



\ 52. Space, the valley of Crooked Creek. On the east side of the valley 

 we have the massive red sandstones (Triassic!) with all the charac- 

 teristics of the same beds east of the foot-hills, and on Trout 

 Creek west of them. It is probable they extend down to bed 51. 

 Their softness has allowed them to be worn down, and they have 

 been covered with debris. The total thickness is from 1,300 to 

 1,500 feet. 

 53. Coarse pink sandstones, 25 feet. 



53. Fine-grained rose-colored sandstone, 8 feet. 

 These two beds are the npper part of the red-beds. 



54. Eather coarse calcareous sandstones, shales mottled red and 

 gray, 5 feet. 



55. Space probably filled with a continuation of 54 grading into the 

 next bed, 30 feet. 



56. Gray compact limestone. This limestone has cross cleavage, 

 and becomes harder as we go up, 10 feet. 



57. Hard fine-grained limestone, light gray, 15 feet. 



58. Space probably filled with limestones and shales, 75 feet. 



59. Outcrop of green shales, lOfeet. 



/ 60. Space filled with shales and sandstones, 60 feet. 



J 61. Rusty yellow sandstone, 5 feet. 

 62. Fine-grained white sandstone with fragments of stems and 

 leaves, 5 feet. 

 , 63. Space sandstones, (?) 20 feet. 

 I 64. Yellow sandstone, 40 feet. 

 [ 65. Space sandstone, 80 feet. 

 C m. Space filled with shales, (?) 500 to 600 feet, 

 j 67. Dark-gray fossiliferous limestone, 2 feet. 

 li. ^ 68. Space, probably limestone, 20 feet. 

 69. Black argillaceous shales, 2 feet. 

 [ 70. Space shales, (?) about 700 feet. 

 r71. Calcareous sandstone shales, 60 feet. 



72. Space shales, (?) 300 to 400 feet. 



73. Black and green shales, fossiliferous with interlaminated lime- 

 stone bands, 400 feet. 



From this point to Trout Creek, a distance of about half a mile, 

 are no exposures, the beds being covered with drift. When 

 we reach Trout Creek it is evident that we have crossed a 

 synclinal axis, for the dip now is toward the westward instead 

 of east as before. On the bluff the beds are as follows : 



74. Black argillaceous shales, outcrop 2 to 3 feet. 



75. Bluish-black limestone, 1 foot. 

 { 76. Black shales, about 180 feet. 



This brings us to the bed of Trout Creek, and crossing it black shales 

 prevail until we reach the volcanic ridge which doubtless caused the 

 fold just referred to. This ridge, A in the figure, is about 400 or 500 feet 

 high, and extends north and south. It is trachytic. Alow hill between 

 the two branches of Trout Creek south of the hill marlsed i is of the 

 same rock. Whether the eastern side of the fold extends along the 

 ridge to the southward or not I could not determine, as the valley was 

 covered with debris, and there were no exposures on the east side until 

 we came to the volcanic rock itself. The line of the section given above 

 is from the northwest to southeast, and with the exception of the beds 

 from No. 18 to 'No. 51 is a continuous section. The portion of the section 

 between these points was made farther southward, but connects with 

 the others. At the point where the greater part of the section was 



