3 I PRO< EEDINGS OF TORONTO Mill IN'.. 



and Trent. >n series, it may prove the receiver <>r Btore house of large, continuous 

 supplies. It i- :i horizon of line grained -and. which will slowly give out its 

 umulations, so that it- wells will be of moderate capacity but long-lived. A 

 as >>f such moderate Bized wells will probably produce a Bupply of considerable 

 value. There i- certainly no use here in drilling entirely through the Sylvania sand. 

 Salt water is found both above and below the sand. 



II w far this Sylvania Band extends is not developed. It has not, I believe, I >< - * - r 1 

 encountered in any of the deep wells south of Cuyahoga county. That its general 

 trend i- northeast at anangleof about 46 degrees, will, I think, he demonstrated by 

 the drill. Previous to the Carboniferous age there was unquestionably a dividing 

 ridge, or slight anticlinal, through this part of what i- now Cuyahoga county, which 

 in a measure divided the great ocean of the lake region from the Appalachian sea. 

 I nformable with this ridge or elevation, the Sub-Carboniferous formation- were 

 more or less affected, giving rise to the present position and elevations of the Sub- 

 Carboniferous series ; notably of the Bcrea Grit, which may be taken as the index 

 stratum of this great series. Now, starting at the Cuyahoga river and going north- 

 eastwardly, this Berea Grit rises above the level of Lake Erie to about 850 feet in 

 Euclid township, where the tops of the hills are higher, and on Euclid creek there 

 are fine ezp and in the same general course northeastwardly toward Painesville 



this zig-zag ridge or water-shed continues. There are well-marked places indicating 

 that this ridge was a shore line. The Berea Grit, a hard sand, is found tapering 

 out to a feather edge, and can he traced on its dip south to a thickness of thirty feet 

 in a few miles, and is not cut otf by glacial action. Again, many of the gullies three 

 to four hundred feet deep (Mi the general strike of the out-crop of the Berea Grit, 

 Btrongly indicate that this rock or shore line formed a harrier to the ice sheet, and 

 the cut took place nprtheast to southwest along the edge of this shore line, giving the 

 present configuration to these deep gullies. 



I argue from what I have thus briefly given, that there i- an elevation bo covered 

 atures and peculiarities of the present Burface, ami that this ridge has 



on it the continuation of the Sylvania sand. How far north ami SOUth, or {,, what 

 extent toward the aortheast it continues can only he determined by boring. But that 

 it i- here, and that it lie- under Euclid township at Buch an elevation and position as 

 to make it a gtore bouse for gas ami oil, I have no doubt. A few well- judiciously 

 put down would triangulate, this section ami determine the interesting question 

 whether this -ami i- in position and a Btore-house for holding the gas and oil rising 

 from tie- underlying 2 200 feet of limestones and shales. If -■>. this -ami would bear 

 •incident similarity to the horizon of the Berea Grit a- to it- location ami use 

 in being superincumbent t" gas ami oil producing formation- ; for the Berea Grit lies 

 above the Huron Shales, ami through the i utii 1 \ i ii i t ..!' Erie Shales gas ami oil 



