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



Chemung shells are seen in the basal portions of No 8, 

 and it may be regarded as the dividing line at this locality 

 between the Chemung and CatsJclll. 



No. 9 consists of layers of olive sandstone separated by 

 shales and near its center is a layer of conglomerate one foot 

 thick filled vfit\\ flat quartz pebbles. 



In No. 12 are also seen many Chemung shells, and a thin 

 layer of lean iron ore comes near its center. This represents 

 one of the Mansfield iron ores of Tioga county which hold 

 their places with such remarkable persistency over widely 

 separated areas. 



No. 13 is a very red stratum of fine shale and is constantly 

 seen from below Susquehanna Depot nearly to Jefferson 

 Junction, just below which it passes beneath the drainage. 

 It also very probably represents one of the Mansfield red, 

 beds or iron ore horizons. 



Near the center of No. 14 down under the Erie R. R. bridge 

 across Canawacta creek we see the outcrop of a coarse yel- 

 lowish-white sandstone. It is not very well exposed how- 

 ever, and its thickness could not be ascertained. This is the 

 same stratum which two miles further northeast makes a 

 bold cliff along the banks of Cascade creek, where the Erie 

 R.R. crosses that stream. 



As we go northward from this point to Cascade creek, the 

 rocks rise just about as fast as the R.R. grade, so that the 

 red band of shale No. 13 is often seen in the cuttings. 



Where the Erie R.R. crosses Cascade creek the stream 

 has cut a deep and narrow canon down through the upper 

 portion of the Chemung and descending from the R.R. fill 

 the following is seen : (Fig. 21.) 



Cascade section. 



1. Shaly sandstone, 10' 



2. Red shale, 10' 



3. Green, shaly sandstone, 6' 



4. Soft, red shale, greenish at top, 20' 



5. Olive, fossiliferous shale, 15' 



6. Massive, yellowish-white S. S., {Fall creek cong.), . . . . 25' 



7. Olive shale and sandstone fossil iferous, 30' 



8. Brownish sandstone, breaking in prismatic blocks, . . . .25' 



9. Bluish, olive shales, 25' 



