HERMAN BEACHES NEAR RED LAKE. 303 



EASTWARD TO RED LAKE AND THE BIG FORK OP RAINY RIVER. 



(PLATES III AND XII.) 



A portion of a shore-line of Lake Agassiz, probably the highest in the 

 Herman series of beaches, has been observed on and near the southwest 

 line of the Red Lake Indian Reservation, between Hill and Lost rivers. It 

 was seen near the north side of sections 31 and 32, and in the central part 

 of sections 27 and 20, township 150, range 40, also for a mile or more 

 thence eastward in the reservation, being 15 to 20 miles east-northeast of 

 Maple Lake. The area is mostly prairie, and the beach is well exhibited. 

 In the southwest part of township 150, range 40, the beach ridge of coarse 

 gravel runs along the northern border of a roughly morainic belt, which is 

 a half to two-thirds of a mile wide. In sections 27 and 26, and onward in 

 the Red Lake Reservation, the beach is a typical gravel and sand ridg'e, 

 containing pebbles and colibles, nearly all of Archean gneiss and crystal- 

 line schists, up to 6 and 8 inches in diameter. Its trend here for about 3 

 miles is nearly from west to east. On the south, within about 1 mile, is 

 a typical morainic belt of many hillocks, knolls, and ridges, which cover a 

 width of several miles and rise 100 to 150 feet above the beach and the 

 low, nearly flat tract that was covered by Lake Agassiz on the north, con- 

 sisting in large part of marshes, through which the Lost and Clearwater 

 rivers flow westward in meandering courses. 



About 25 miles farther east in the Red Lake Reservation the road 

 from Red Lake to White Earth crosses a beach of Lake Agassiz, which is 

 probably the highest, being a, continuation of the foregomg-. This beach 

 runs nearly from west to east, and is aj^proximately 40 feet above Red 

 Lake, or 1,210 feet above the sea. It is a ridge of sand and fine gravel, 

 crossed l)y the road about 2 miles southwest from Big Rock Creek and 

 Shell Lake. A grove of red pines grows on the beach, but the till on each 

 side bears white pines. Following the road to the southwest, a belt of 

 kames is entered about three-fourths of a mile from the beach, which con- 

 tinues to Sandy River, ha^^ng a surface of many knolls and short ridges, 

 with no observable parallelism in their trends, the crests being 10 to 20 feet 

 above the inclosed hollows. 



