GEOLOGICAL SURVEY OF THE TERRITORIES. 173 



Feet. 



7. EecTdish and greenish calcareous shales, with interlaminated 



limestones, containing trilobites. Thickness 50 



8. Limestones, weathering to a brownish color, slialy in many 



places - 200 



9. Alternate beds of pebbly and compact limestones 200 



10. Thick beds of limestone in which were found Spirifer, Pro- 



ducUis, (Jhonetes^ Zaphrentis. The lower layers weather yellow. 

 The layer in which the fossils occur is of a blue color, and 

 very compact. Thickness, estimated at 1, 000 



11. White quartzite. 



12. Jurassic beds. 



