62 



GEOLOGY OF THE EUEEKA DISTEICT. 



JPoponip 

 JJjriestone. 



200 



4. White quartzite. (Eiireka quartzite.) 



5. Dark gray limestoue, massive beddiug, with iutercalated shaly layers 



carrying a typical Silurian fauna. (Pogonip liniestoiif.) 300 



6. Siliceous cherty limestoue ' ^ 



4,275 



Quar'Czi£e 



Limestone 



Jferonian- 

 Linwstone 



Fig. 2. — Section across Lone ilouutain. 



In the Nevada limestoue at Loue Mountain the fauna is exceedingly 

 rich in species. A list of the fossils occurring here, together with some 

 remarks upon their geological significance, will be found in the following 

 chapter in the discussion of the Devonian rocks. 



