NORCROSS BEACHES IN NORTH DAKOTA. 391 



streams to take their southerly course instead of passing eastward in the 

 direction of the slope of the svu'face. Orig-inally confined between the low 

 beach ridges, they have since eroded channels 50 to 75 feet deep in the 

 general sheet of till. In section 29, Hegton, the elevation of the upper 

 Norcross beach, lying west of the North Branch, is 1,106 feet. Along the 

 next 2 miles northward in sections 20 and 17 the crest of this beach varies 

 from 1,100 to 1,105 feet. It is intersected by the North Branch in the 

 southwest quarter of section 20. Remnants of the lower Norcross beach on 

 the east side of this stream in section 29 have an average height of 1,090 

 feet, above which they are partly heaped 10 to 15 feet in dunes. 



The Norci'oss shore-line runs northward through the east part of Agues 

 and Inkster townships. In sections 11 and 2, Agnes, the upper beach, a 

 fine ridge of gravel and sand, passes about 25 rods west of Orr's station, on 

 the Park River and Langdon ):)ranch of the Great Northern Railway. Its 

 crest here has a height of 1,102 to 1,105 feet. In sections 23 and 14, Ink- 

 ster, about a mile west of Inkster ^^llage, two Norcross beaches are dis- 

 tinctly developed, crossing a tract of gravel and sand. The crest of the 

 western ridge is at 1,092 to 1,097 feet and that of the eastern at 1,090 to 

 1,092 feet. Depressions 4 or 5 feet deep lie on the west side of each of 

 these ridges, which are about 50 rods apart. A half mile and 1 ^ miles far- 

 ther west, two other well-marked beach ridges, running northward parallel 

 with the foregoing, belong to the lowest part of the Herman series. The 

 crest of the eastern one is at 1,113 to 1,122 feet, and of the western at 

 1,127 to 1,130 feet. It is to be remarked, however, that the Herman and 

 Norcross series of beaches here lie very near together, being less distinctly 

 separated than farther south and in general on most other parts of the 

 borders of the lake area. 



In the east edge of section 10, Inkster, on the north side of the Forest 

 River, the upper Norcross beach is well developed, attaining a height of 

 1,100 to 1,102 feet. About 3 miles farther northwest it crosses the south 

 line of section 28, Eden, with an elevation of 1,107 feet. In sections 5 

 and 6 of this township it is marked only by a sliglitly more rapid descent 

 of the eroded surface of till, which is strewn with frequent bowlders. 

 Through Eden and the next 15 miles northward to the vicinity of Edinburg, 



