40 



SEDIMENTARY GROUPS OF THE PLATEAU PROVINCE. 



TABLE OF THE GROUPS OF SEDIMENTARY STRATA OF 

 THE PLATEAU PROVINCE. 



Scale in 

 feet. 



2, 000 



4,000 



6,000 



8, COO 



10,000 



12, 000 



14, 000 



i 



300 



1,800 



2,000 



500 



800 



3, 000 



1,800 



1,800 



2,000 





Groups. 



Bishop Mt Conglo 



Brown's Park. 



Bridger. 



Upper Green Rivei 



Lower Green River 



Bitter Creek. 



Point of Hocks. 



Salt Wells. 



Sulphur Creek. 



Uriconformable by i)li< 



.th underlying rocks. 



Sandstones, gravels, limestones, concretionary 

 and stratified flints. Unconformable with all 

 underlying rocks. 



Bad-land sandstones, (chiefly green-sands,) lime- 

 stones, shells marls, -and concretionary and 

 stratified flints. 



Shnles, often bituminous; sandstones and lime- 

 stones ; carbonaceous shales and lignitic coal 

 near the base. 



Bad-laud sandstones, often with much gypsum ; 

 indurated sandstones; ferruginous; shell- 

 marls ; many beds of carbonaceous shales and 

 lignitic coal. To the southward the group is 

 composed of indurated sandstones and lime- 

 stones. Uiicoiiformablc by plication and ero- 

 sion with the next. 



Upper Hogback 

 Sandstone. 



Middle Hogback 

 Sandstone. 



Golden Wall 

 Sandstone. 



Sandstones, usually indurated, 

 sometime ferruginous, with 

 many beds of carbonaceous 

 shales and lignitic coal. 



Sandstones or arenaceous shales; often very 

 friable, producing bad-lands, with carbonaceous 

 shales arid lignitic coal. 



Black shales; occasionally friable sandstones 

 with carbonaceous shales and lignitic coal. 



Henry's Fork. 



Sandstones, bad-laud rocks, conglomerates, and 



shales, with carbonaceous slriles and lignitic coal. 



' Unconformable by erosion with the next. 



