Prossek — Hamilton and Chemung Series. 



177 



thin-bedded, coarse-grained sandstones, above which are red sandstones of 

 similar texture. This is a characteristic outcrop of the Oneonta sandstone. 

 The accompanying sketch gives an idea of the divisions of section I). 



SECTION oK XX 1), SOUTH OF NKW BERLIN CENTER. 



(365 ' 



H55' 



305' 



0' 



350' 



305' 



Heavy ledge of red and grey sandstone. 

 < hit onto. 



Red and greenish thin sandstones. 

 Ithaca. 



D 1 . Sandstones. 

 Covered. SJisr'hu me. 

 Unadilla river level. 



On the "Preliminary Geologic Map of New York," published in 1896, 

 the northern point of the Oneonta sandstone is represented as some two 

 miles farther south; but the formation clearly forms the summit of the 

 divide in this locality. 



Two miles to the east is another four corners, where the road crosses the 

 valley of Morris creek in the northern part of Morris. Near the corners, 

 approximately 220 feet low er than the ledge of < )neonta sandstone at D s , are 

 tlnn arenaceous shales which contain the small form of Spirifer mucronatus 

 (Con.), Bill. These rocks belong in the Ithaca formation, which continues 

 northward and encloses the small glacial lake on the line of Morris and 

 Pittstield townships well toward the summit of the divide known as 

 Matteson's lake. 



XX K x . At the top of the hill, northwest of Mattesoii's lake and oxer- 

 looking the Unadilla valley, are thin arenaceous Ithaca shales, this formation 

 continuing for at least 350 feet below the summit of the hill. An outcrop of 

 these shales about fifty feet below the summit contains plenty of Ithaca fossil-. 

 The lower part of the hill belongs in the Sherburne formation which extends 

 along the river road to north of the four cornel's above Silver lake. 

 12 



