PAHKANAGAT RAI^GE. 197 



POGONIP. 



Feet. 



6. Eveuly bedded layers of a dark bluish bhitk and bliiisb gray limestone, thin 



layers making more massive beds that break uj) ou exposure to the 



influeuee of the atmosphere 150 



Recejitnculites mammillaris, Orthin pogonipensis, Orthis trivenaria, 

 Poramboii itcs obscurus, lielhrophon, sp. ?, HyoUtes, sp. uudet., Endo- 

 ceras multitubulatiim, Leperditia biria, IlUvnus vrassicauda. 



7. Thinner bedded bluish gray limestone that is shaly iu places 400 



Fossils numerous. 



8. Massive bedded gray limestone, in layers from 1 to -4 feet in thickness 200 



Orthis, ^fun■hisolli<l, -.md Orthoceras are seen in the lower layers, and 

 Revept((culitcs mammillarix and R. dongata 150 feet higher up. 



2, 200 

 This section gives for the different horizons as follows: 



Niagara 535 



Treutou 515 



Eureka 400 



Pogonip 750 



On the northeast slope of Qitartz Peak there is a heav}^ mass of light 

 gray siliceous limestone, roughly estimated at 1,000 feet, without fossils, 

 which, by its stratigraphical position and lithological habit is easily 

 referred to the upper beds of the Lone Mountain, a continuation of the 

 beds upon the summit of the peak as given iu the section. To the south of 

 Quartz Peak occurs a great development of limestone. A section across 

 the beds is of special interest, owing to the thickness of the limestones 

 from the Lone Mountain to the Carboniferous, which is unbroken by the 

 presence either of Diamond Peak quartzite or White Pine shale, as in both 

 the Eureka and White Pine sections. The section is as follows: 



CARBONIFEROUS. 



Feet. 



1. Siliceous limestone, sandstone, and quartzite 500 



2. Cherty sdiceous limestone 250 



3. Shaly limestone in massive layers 55 



4. Massive bedded gray limestone, hard aud compact; it passes into gran- 



ular dark gray limestone aud then int<j more thinly bedded bluish 



black limestone 1, 260 



