424 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



I 



Composite section — Continued. 



Correla 



tions with 



New 



York 



eS a* cS 



oi C C 



Locality 



for 

 sections. 



DESCRIPTIONS OK HORIZONS. 





"Si J 



So oi 

 t. be 





* t* 3 



2S o 



0) 



a> 



. 53 



S c3S 



"^ oj >. 

 0<5 > 





to 03 



S^^S 



w ill a> 

 :=; u tic 





6a. Thin-bedded sandstones 2 feet 6 inches 



66. Grayish-black shales abounding in poorly preserved Bryozoa. 



13 feet 6 inches. 

 6r. Black shales, with thin bands of sandstone and some layers of limestone; 



Ostracoda abundant 22 feet. 



M. Thin-bedded dark-blue limestone; fossils common toward the bottom; 

 Ostracoda in great profusion. RhynchoneUa, Rhynchospira, Tentaculites, etc. 



225 feet. 

 6f. Dark-blue limestone with thin shale partings; much folded. (Spring here.) 



Thickness estimated 70 feet. 



(The Pinto section continues exposed for 159 feet lo'ver. The remainder 

 of the section is again taken up 10 miles east, at Wills Creek, near Cum- 

 berland, and is supposed to include the above-mentioned 159 feet of the 

 Pinto section.) 



7«. Shales and fossiliferous limestone, mostly concealed 33 feet. 



111. Reddish shale, with a few thin limestone bands (concealed in part; may 



contain the upper iron-ore band of o inches) 29 feet. 



1c. Fossiliferous gray shale and blue limestone, with 5i feet of shaly sandstone 



near the bottom 28 feet. 



"id. Reddi.sh fossiliferous shale 24 feet. 



7e. Concealed 238 feet. 



If. Lower fossiliferous ore 10 feet. 



7(7. Rusty olive shale 17 feet. 



7/i. Fossiliferous olive-colored shale 85 feet. 



7('. Rusty shales above, followed by gray sandstone interstratified with olive 



shales .36 feet. 



Ij. Olive-colored shales, with thin beds of brownish-gray quartzite 27 feet. 



8. Snow-white to light-gray quartzite, in places a tine conglomerate; Arthrophy- 

 cus haiiani. the onlv fossil 287 feet. 



9. Interbedded dull red sandstones and shales. In Wills Creek gorge 530 feet 

 can be seen, but the total thickness, on the basis of that in Bedford County, 

 Pennsylvania, is probably not less than 730 feet. 



'Hudson River shales." 



