466 GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. 



Tahle of strice — Continued. 



Parkman Township, Geauga County 



Near Welshfield 



Kennedys Ledge, Portage County. . 



Nelson Center, Portage County 



Garrettsville, 1 to 2 miles south- 

 east of. 



Palmyra 



Edinburg 



Hiram, 1 mile south of 



Hiram (college grounds) 



Hiram, 1 mile south of 



Chardon, 2 miles south of 



Chardon, 4 miles south of 



Chardon, 2 miles southeast of 



Leroy Township, Lake County 



S. 30°W 



S. 58°W 



S. 10° to 14° W 

 SW 



S. 55° to 86° W 



S. 30° W 



S. 60°W 



S. 18° to 30° W 

 S. 40° to 62° W 



SW 



S. 5° AV 



S. toS. 12° W. 

 S. toS. 5°W.. 

 S. 45° W 



Whittlesey 

 Leverett . . 

 Leverett . . 



Colton 



Leverett . . 



Newberry . 

 Newberry . 

 Leverett . . . 



Colton 



Colton 



Leverett . . . 

 Leverett . . . 

 Leverett . . . 

 Read 



Vol. V, p. 770. 

 Notes, 1890. 

 Notes, 1890. 

 Notes, 1890. 

 Notes, 1890. 



Vol. ni, p. 135. 

 Vol. Ill, p. 135. 

 Notes, 1890. 

 Notes, 1890. 

 Notes, 1890. 

 Notes, 1890. 

 Notes, 1890. 

 Notes, 1890. 

 Vol. I, p. 530. 



In the majority of the striated exposures, the bearings of which are 

 given in the above table, no striking peculiarities were noted. The expo- 

 sures are usually but a few square yards in extent and exhibit well-defined 

 grooves of various sizes from an inch or more in breadth down to those 

 more properly denominated striae. Nearly all the striated exposures yet 

 discovered are on the Carboniferous sandstone and conglomerate. Owing 

 to the coarseness of texture of these rocks, they received few fine striae, 

 but coarse striae are common, and glacial planing is very marked in many 

 of the exposures. The occasional striae noted in the above table, whose 

 bearings are out of harmony with the general glaciation of the districts in 

 which they occur, can not perhaps be wholl}^ accounted for at the present 

 stage of investigation, but it is probable that local topography exerted a 

 measurable if not a controlling influence on the movement of the ice sheet 

 at such places. No clear evidence was discovered that they were the product 

 of a distinct ice invasion of a much earlier or of a much later date than the 

 general glaciation. 



J. C. Anderson's quarry near Jamestown, Pa., where an instance of 

 cross striation was found, is situated on the north side and about 100 feet 

 above the bottom of an east-west valley. There is a general glaciation, 

 including glacial planing and grooves bearing S. 18° E., across which there 



