20 CHARLES S. PROSSER 



Susquehannah River, in New York, the red rocks at first are inter- 

 stratified with those which contain Chemung fossils, while farther 

 east the red and greenish shales and sandstones replace all the rocks 

 with the lithologic characters of the Chemung and its fauna dis- 

 appears. Below the Chemung and in the midst of what corre- 

 sponds to the Portage stage of western New York is another mass 

 of red and greenish shales and sandstones called the Oneonta 

 formation, which extends west to the Chenango VaUey. In Dela- 

 ware County the upper reds of the Oneonta and the lower of the 

 Catskill unite and, in the Catskill Mountain region, extend down- 

 ward into what is called the Sherburne sandstones, which represent 

 the lower part of the Portage stage of western New York. In 

 Pennsylvania, on following this mass of red rocks to the southwest 

 it is found that they begin later, the change being gradual, and 

 that the faunas of the Portage, including the Ithaca in Maryland 

 and Chemung stages, reappear, as is the case in the southern part 

 of western New York.^ 



The rocks exposed along the road following the highway toward 

 Adams Mill, West Virginia, are largely red shales with some sand- 

 stones. Near the top of the hill are conglomerate layers, and 

 across the upland the rocks are mostly red argillaceous shale, and 

 all belong in the Hampshire formation. 



In general it may be said that to the east of Romney the rocks 

 belonging in the belt of the Jennings formation are mostly covered, 

 while on the slope of the hill following the roads leading toward 

 Frenchburg and Adams Mill are frequent outcrops of red shale 

 interstratified with red sandstones belonging in the Hampshire 

 formation. On top of these hills the red shales are most con- 

 spicuous, and decomposing rather readily into soil make good 

 farming land. 



Mill Creek southwest of Romney. — -Mill Creek has cut a deep and 

 narrow gorge through Mill Creek Mountain to the southwest of 

 Romney which is followed by the highway from Romney to Moore- 

 field Junction. In this gorge are high cliffs of the Oriskany sand- 

 stone which show excellently the massive nature of the formation. 



^Seventeenth Annual Report State Geologist (New York), in which the writer has 

 discussed this question. 



