May, 1912.] A Study of Buckeye Lake and Vicinity. 529 



From these logs the direction, location, depth and in many places 

 width of Newark valley can be plotted quite accurately. 



Beginning with the southwestern portion of Newark, a well 

 just north of the junction of the South Fork of the Licking and 

 Raccoon creek and half way between the union of these streams 

 and the tracks of the Shawnee Branch of the Baltimore and Ohio 

 railroad shows that the rock has been excavated to 527 feet above 

 sea level, 323 feet below the present river at that point. From 

 this point southwestern for a distance of 5 miles the center of the 

 old valley lies a little to the west of the Ohio canal and the Ohio 

 Electric railway. It then turns directly south to Buckeye Lake. 

 A well 23^ miles northeast of Hebron shows the rock to have been 

 excavated to 510 feet above sea level, which is 360 feet below the 

 present surface. Here the width of the ancient valley is clearly 

 shown by well defined valley walls. To the west just north of 

 Luray on the National road the rock walls are 930 feet above sea 

 level ; but 30 feet below the present surface ; and to the east a well 

 f of a mile north of the National road and 300 feet east of the 

 Baltimore and Ohio railroad tracks struck the rock at 920 feet 

 above sea level, but 40 feet l^elow the present surface. 



Measuring from these points I find the valley to have been 4^ 

 miles wide along the National road. The greatest depth in this area 

 was found in a well in the field along the north shore of Buckeye 

 Lake. Bed rock in this well was struck at 430 feet below the present 

 surface, 450 feet above sea level. Buckeye Lake lies along the 

 southern margin of the valley and not in the center. The trend 

 from the lake is south and southwest to Basil and Baltimore. 

 Between the lake and Baltimore I found but few wells so that the 

 valley is not so clearly defined in this section, but it is much 

 broader than immediately north of the lake. 



Gas wells are very numerous at Basil, Baltimore and in the 

 immediate vicinity of the two towns. Here the valley is at least 

 8 miles wide, is open and level. At Basil it turns more directly 

 to the southwest following in general the course of the Little 

 Walnut. It crosses the Franklin county line and connects with 

 the valley mapped by Dr. Hubbard^^ in Franklin county. Newark 

 valley as I have traced it coincides quite closely with the one 

 described by Tight" and Leverett^'^ except in the southern portion. 

 Among the well records of this section the greatest depth is re- 

 corded in a well in Basil, which shows that the rock has been 

 excavated to 452 feet above sea level, 3S8 feet below the level of 

 Little Walnut creek. If this greatest depth was approximately 

 the center of the valley the stream was here farther north than the 

 one mapped by Tight. 



13. Hubbard, George D. The Geology of Columbus and vicinity. Bull. 14: Geol. Survey 

 of Ohio. 1912. 



14. Tight. G. W. Drainage modifications in southeastern Ohio and adjacent parts of West 

 Virginia and Kentucky. U. S. G. S. Prof. Paper 13. 



15. Leverett Frank. Mon. 41: U. S. G. S. p. 410. 



