68o JESSE E. HYDE 



most, only the topmost beds of the Cuyahoga are shown. In ad- 

 dition, Licking County southwest of Granville is practically unex- 

 amined by the writer. 



Wherever this facies has been observed, either in the outcrops 

 or by means of well-records, its sediments show the effect of the 

 conglomerate areas on either side. Their thickness, while some- 

 what less than in the adjacent conglomerate facies, is much greater 

 than in the Scioto Valley shale facies, and the sandstone content 

 appears to be decidedly greater. As has been stated, the thick- 

 ness of the Cuyahoga in the Hocking Valley facies is from 600 to 

 625 feet. Passing eastward this gradually decreases in the wells 

 to about 500 feet just west of Bremen in Fairfield County (Myers 

 well). A few miles to the northward at Rushville, an approximate 

 determination with several somewhat uncertain factors gives 535 

 feet. At Newark, yet farther north in Licking County, well- 

 records indicate about 570 or 575 feet, and at the Everett quarry 

 over the Toboso facies, due east of Newark, it is 588 feet thick. 

 This series of observations extends in an irregular oblique line 

 north and northeasterly, entirely across the Granville province. 

 Newark, from various considerations, appears to lie on the transi- 

 tion to the Toboso facies. 



The Black Hand member appears to be generally present along 

 the length of this line, although there are often unknown covered 

 intervals of several miles for which no well-records or outcrops are 

 known. It appears to be from 50 to 100 feet thick and is con- 

 siderably changed from its conglomerate phase; it consists largely 

 of coarse or moderately coarse sandstones, with occasional shaly 

 beds, and sometimes carries fossils. Just east of Rushville, there 

 is good evidence from wells that the Black Hand is largely repre- 

 sented by what the drillers report as shale. 



Due westward from Newark a change in the nature of the Black 

 Hand can be observed in the surface outcrops. Within four miles 

 it passes largely into sandy shales; sandstone beds are present, 

 sometimes two or three feet thick, but they are irregular and may 

 pinch out entirely in a few feet. This passage to shales exactly 

 parallels that observed at many points on the western side of the 

 Hocking Valley facies in Hocking, Vinton, and Ross counties. 



