248 IT. Cross — New Devonian Formation in Colorado. 



Mountains quadrangle was mapped geologically by the writer, 

 assisted by Ernest Howe and J. Morgan Clements. Devon 

 Point and the exposures to the southwest were visited, but as 

 the remark of Endlich concerning the fish remains had escaped 

 attention, they were overlooked in the effort to secure fossils 

 from the Ouray limestone. In 1903, however, a special trip 

 was made by the writer and Mr. Albert Johannsen to Devon 

 Point and the adjacent exposures in special search for the fish 

 remains. 



The relation of the beds at this locality is shown in the 

 accompanying detailed section. 



Section of Paleozoic Formations, Devon Point, Colorado. 



TOP. FEET; 



Ouray limestone remnant, estimated _. 25 



Elbert formation. 

 12. Red shale or clay. Strong red color, uniform com- 

 position ; when dry makes soft, crumbling flakes 



at exposures 5 



11. Sandstone or quartzite. A layer of variable grain, 

 fine or coarse, not persistent, gray, full of fragments 

 offish scales in some places; free from them in 



others _ __„+ 1 



10. Calcareous shales and thin limestone, buff or gray in 

 color, breaking up readily into slabs or flakes. 

 Salt casts are common in this division. A thin, 

 discontinuous red purplish, sandy layer full of scale 



fragments occurs locally 25 



9. Thin layers of quartzite, limestone, and red calcareous 

 shale, alternating. Limestone is arenaceous, dull 



gray, few layers reaching 6 inches in thickness 8 



8. Quartzite, fine-grained, gray, hard, in layers 2 or 3 



inches thick 2- \ 



7. Red, calcareous shale 1-^ 



6. Limestone, yellow, earthy -f 



5. Calcareous and sandy shales, variegated, yellow, 



buff, lilac 1-^ 



4. Quartzite, fine-grained, yellow-brown .. 1- 



3. Sandy shale, a harder layer in middle. Reel, green- 

 ish, or mottled 5- 



2. Sandy limestone, shaty in part, rich in fish scales and 



plates _- ± 1- 



1. Red shale, calcareous, and sandy, with specks of 



bone or shell 2- 



54 



