348 GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. 



either side, which scarcely exceed 5 feet. In Highland County the inner 

 border district is hilly, but the drift has usually a plane sui'face; occasional 

 knolls and ridges of small size and limited extent appear. 



The bearings of the strise are on the whole in harmony with the 

 distribution of the moraine, since they form a diverging series bearing 

 southward, southwestward, and westward to meet the moraine nearly at 

 right angles. While the majority may have been formed at the Wisconsin 

 invasion, one exposure is certainly of Illinoian age, as indicated above. 

 Observations were made as follows: 



1. On the south bluff of Lees Creek, near the top of the hill, 140 to 

 150 feet above the creek valley. Exposed in a ditch on the west side of 

 the East Moni-oe and Hillsboro pike, bearing S. 12° W. (magnetic). The 

 rock surface rises rapidly toward the south, affording an excellent surface 

 for the glacier to work upon. The striae take the form of numerous fine 

 lines. 



2. On Bull Run, a tributary of Hardins Creek, in survey 2518, about 

 one-fourth mile east of the Leesburg and New Petersburg pike, bearing 

 S. 9° W. (magnetic). The rock is a hard brown limestone, perhaps siliceous 

 in part. The exposure is in the bed of the stream, and the glaciation con- 

 sists of shallow grooves one-half nich or more in width, and of fine lines, 

 all having, so far as detei'mined, the same bearing. 



3. In the second railway cutting west of Leesburg in a ditch at the 

 side of the track, on bi'own limestone, bearing S. 18° W. (magnetic). The 

 strise consist of fine lines, parallel so far as observed. In a cutting between 

 this place and Leesburg the railway has removed layers of rock to a depth 

 of several feet. Mr. Hilliard, of Leesburg, states that he has observed striae 

 in this cutting bearing west of soutli. Orton has reported strise on a hill to 

 the south, the altitude being 75 feet or more above the level of the exposure 

 in the railway cutting.^ 



4. In Clinton County two striated exposures were noted. One is on the 

 Clinton limestone, in the bed of Lytles Creek in the southwest part of Wil- 

 mington, bearing S. 32° W. (magnetic). 



5. The other is just below the railroad bi'idge west of Ogden on a low 



' Rept. Ohio Geol. Survey, 1870, p. 26.5. 



