294 CHARLES S. PROSSER 
Crawford, Richland, Huron, and Lorain counties to the western part 
of Cuyahoga county. Asarule, however, the older formations of 
this part of the state are deeply covered by drift deposits, so that 
outcrops are infrequent, and it is not strange that this thin 
deposit of shale has not been reported. Its continuation, 
however, appears to be conclusively shown by the records of 
numerous wells drilled in these counties, in which a black shale 
of variable thickness was penetrated just above the Berea sand- 
stone. Some of these wells are mentioned below, in all of which 
the Sunbury (Berea) shale was noted at its proper stratigraphic 
position, immediately above the Berea grit) At Mt: «Veron, 
Knox county, the top of the Berea grit is reported at a depth of 
470 feet;’ in Richland county, at Mansfield, it is 640 feet in 
depth, with 4o feet of Sunbury shale above ;? at Crestline 113 
feet in) depth;> at Shelby 14 feet,4 with 23 yteet jor Sunbury 
shale on top; at New London, Huron county, 165 feet;> at 
Wellington, in Lorain, 138 feet, above which is reported 30 feet 
of black shale;® and at Belden from 10 to 25 feet of Sunbury 
shale.’ 
Berea.— Dr. Newberry in his ‘Report on the geology of 
Cuyahoga county,” stated that at Berea, in the western part of 
the county, ‘that portion of the Cuyahoga shale which immedi- 
ately overlies the Berea grit contains myriads of Lengula mele 
and Discina Newberryi,”® but there was no suggestion of separat- 
ing this fossiliferous deposit from the Cuyahoga shale. In 1875 
Meek mentioned ‘‘the dark shales of Berea” in an explanation 
of a figure of Discina ( Orbiculoidea) Newberryi from that locality, 
and used the expression ‘‘ Berea shale.’’9 
Quarry No. 6 of the Cleveland Stone Company at Berea 
furnishes the following section : 
t Rept. Geol. Surv. Ohio, Vol. VI, 1888, p. 366. 
2 [bid., p. 305. 5 Jbzd., p. 440. 
3 [bid., p. 303. 6 [bid., p. 348. 
4 Jbid., pp. 316 and 365. 7 Lbid., p- 332. 
8 Rept. Geol. Surv. Ohio, Vol. 1, Pt. 1, 1873, p. 185. 
9 Rept. Geol. Surv. Ohio, Vol. Il, Pt. Il, Pl. XIV, explanation of Figs. 1c and 1d. 
