PALEOZOIC CORDILLERAN GEOSYNCLINE 



77 



HOUSE RANGE 



Wheeier and Steele 1951 

 Benliey 1958 



SHEEPROCK MTS. 



Cohenour 1957 



EAST TINTIC MTS. 



Morns 1957 

 Benlley 1953 



OQUIRRH MTS. 



Gilluly 1932 



Bissell ond R1o,py(notes) 



S.STANSBURY 

 MOUNTAINS 



N STANSBURY 

 MOUNTAINS 



LAKESIDE MTS. 



Young 1955 



PROMONTORY MTS. LOGAN AREA 



Oiton 1957 Win, ara 1946 



Bunder bera^ 



Cole Conyon 



Ophir Group 



Dunderbefq^ 



Cote Conyon 



Lynch 



Worm Creek mem 



Bnghom 



Morjurn 



S«osev 



Condor 



Fig. 6.10. Cambrian formations of central and northern Utah. Reproduced from Rigby, 1958. 



.posed, yielding biotite and amphibolite schists and diopside rocks ( Kraus- 

 kopf, 1939). 



A few fossils establish a marine origin for part of the series at least, 

 and a late Paleozoic age. 



In Stevens County in northeastern Washington, Weaver ( 1920 ) de- 



scribed the Stevens series, a group of metamorphic rocks with the great 

 thickness reportedly of 42,900 feet. It consists of quartzites, argillites, 

 phyllites, dolomitic limestones, and schists. It is believed to be in part of 

 Carboniferous age, but the lower parts are undoubtedly older. Bancroft 

 (1914) had previously found fragmentary plant fossils which appeared 



