THE NORCROSS BEACHES IN MINNESOTA. 387 



Spring Creek Township. This beach, which appears to be one of the 

 upper Tintah shore-lines, has a height of 1,060 feet above the sea. About 

 a quarter of a mile farther east beach gravel and sand are spread in a some- 

 what flattened, broad ridge, at a height of 1,070 to 1,073 feet, bounded by a 

 hollow 2 or 3 feet lower on the east. This probably belonged to a slightly 

 higher Tintah beach of Lake Agassiz. The Norcross shore-lines are not 

 distinctly exhibited here on the very gradual ascent of the delta sand 

 deposit, which extends eastward across the next mile or more to tracts 

 of dunes. 



On the Fosston branch of the Great Northern Railway, about 14 miles 

 north of the last described locality and on the same latitude with the east- 

 wardly curving Herman beaches north of Maple Lake, three small beach 

 ridges are crossed about 2^ miles east of Benoit, the elevation of their 

 crests being successively 1,062, 1,069, and 1,069 feet in their order from 

 west to east. These probably represent the upper Tintah beach. One and 

 a quarter miles farther east a more massive beach is crossed, with its crest 

 at 1,092 feet, which is probably the lowest Norcross shore-line. Other 

 beach ridges crossed 1^ miles and If miles east of the last, with crests 

 respectively at 1,114 and 1,120 feet, are apparently referable to upper 

 Norcross stages of the lake. The next beach noted on this railroad, three- 

 quai'ters of a mile farther east, at the height of 1,142 feet, belongs to the 

 lower portion of the Herman series. 



In the southeast part of Lake Pleasant Township the lower Norcross 

 shore is marked by a belt of gravel and sand about half a mile wide, 

 extending from the southwest to the northeast and east, having an elevation 

 in section 27 of 1,083 to 1,095 feet. 



My only further observation of shore-lines referable to the Norcross 

 stages of the eastern border of Lake Agassiz is within 1 to 2 miles west of 

 St. Hilaire, where indistinct lower Norcross beaches, at a height of about 

 1,090 feet, are crossed by the St. Hilaire branch of the Great Northern 

 Railway. 



Thence northward the Norcross shores lie in a wooded country where 

 they can not practicably be traced. From the altitudes of the region it is 

 known that, after passing northward and then eastward around the higher 



