74 G 5 . REPORT OF PROGRESS. I. C. WHITE. 



20. Cascade sandstone, (Fall creek conglomerate*) , .... 25' 



21. Shale and sandstone, olive, very fossiliferous, 30' 



22. Sandstone, brownish, prismatic block fracture, 25' 



23. Shale, bluish-olive, 25' 



24. Sandstone, brownish, very fossiliferous, 15' 



25. Shales, olive and flaggy, quite fossiliferous, ...... 25' 



To bottom of Cascade exposure 275' 



The absence of red rocks in the New Milford lower shales 

 at this locality shows how little we can rely on color for 

 identification. Elsewhere in the county over 100 / of these 

 shales are red. The few layers exposed in the concealed 

 interval No. 2 are gray. 



No Chemung shells appear above the 20' olive shale de- 

 posit No. 9. 



The fossil shells of No. 9 are principally Spirifers and, 

 Rhynconellas of Chemung type, but too badly preserved to 

 determine their species. 



The flat pebbles of No. 10, are of white quartz, and look 

 like those of the Yenango Oil Sands. 



The Mansfield iron ore bed% (in No. 15) is lean, clayey, 

 and full of fragments of Spirifers &c, in bad condition for 

 specific determinaton. 



A lower Mansfield ore bed is perhaps represented here 

 by some iron-ore nodules in the 10' brick-red shale (No. 16.) 



The 15' shale (No. 17) is quite full of Chemung fossils ; 

 one layer, just below the middle of it, is a mass of Spirifers, 

 &c. — S. disjuncta, Pterinea, sp f Streptorhynchus Che- 

 mungensis, and many fragments of what seem to be fish 

 remains. 



Nos. 10 to 16 are exposed along the Jefferson branch rail- 

 road for 1,000 yards, from tha Erie junction, up to Starucca 

 Creek, beyond Jefferson junction. Hence, No. 16 (brick 

 red) can easily be traced, along the Erie, railroad to Cas- 

 cade Creek ; and so the upper part of the section be tied to 

 the lower. 



The Cascade sandstone (No. 20) makes the fine cliffs 

 which wall in Cascade Creek where the Erie railroad crosses 

 it ; is a rather coarse, very hard, yellow sand rock ; is full 

 of shells in its lower layers ; and contains many fragments 



*Of Sherwoods' Bradford and Tioga Report G. 



