268 0. II. Hershey — Belt and Pelona Series. 



Paleozoic Section in Pastern Nevada. 



Estimated thickness 



1. Blue, heavy-bedded, very fossiliferous, 



black-cherty limestone (Ruth) 1,000 feet 



2. Drab and light brown, massive cherty 



limestone with brown, coarse crinoidal 

 limestone locally prominent in lower 

 portion (Arcturus) TOO to 1,000 " 



3. Yellow and red, very fine-grained, soft 



sandstone alternating with light gray 

 limestone layers ; Upper Carboniferous 

 (Arcturus) 200 to 1,000 " 



4. Light gray, drab and dark gray limestone, 



not very cherty, but with locally promi- 

 nent red and yellow sandstone bed 10 

 to 200 feet thick 500 to 2,500 " 



5. Brown and olive quartzite, (Diamond 



Peak) ' to 100 " 



6. Black, soft shale (White Pine).. 50 to 200 " 



7. Light gray, massive limestone 50 to 100 " 



8. Black shale and red and white quartzite. 100 to 200 " 



9. Dark brown, dark lead-gray and black 



limestone ; upper part Upper Devonian 



(Ely) __._■ ... 1,000 to 2,000 " 



10. White, hard, fine-grained quartzite 



(Eureka) 100 " 



11. Blue, thin-bedded limestone ; Lower 



Ordovician 200 " 



12. Dark brown, very fossiliferous and black, 



solt shales; Lower Ordovician 200 to 500 " 



13. Blue limestone ; Lower Ordovician 100 " 



14. Light gray, imperfectly fossiliferous, thin- 



bedded, in part brecciated or conglom- 

 eratic limestone ; Lower Ordovician.. 2,000 " 



15. Massive, blue-gray limestone with pecu- 



liar wavy bands in shades of blue 500 " 



16. Blue, thin-bedded cherty limestone 700 " 



17. Black, fossiliferous shale and blue shaly 



limestone; Lower Cambrian.. 300 " 



18. Blue and gray, heavy -bedded limestone. 1,000 " 



19. Dark blue limestone . ...... 50 to 100 " 



20. Brown quartzite, green mica slate and 



blue limestone interbanded .. 300 " 



21. Pink and white quartzite 2,000 " 



22. Black slate weathering purple 150 to 1,500 " 



23. White conglomerate (bearing jasper 



pebbles) and quartzite 100 to 200 " 



24. Green slate 500 to 1,000 " 



25. White and pink quartzite 500 to 2,000 " 



