400 THE GLACIAL LAKE AGASSIZ. 



Breckenridge, by a sand and gravel deposit several feet deep, which runs 

 from west to east. Thence this beach, having a height of 1,030 to 1,035 

 feet above the sea, curves to the northeast and north, passing through the 

 city of Barne.sville not far east of the railway station, and onward a little 

 east of north to section 7, Humboldt, where it bends northwestward. The 

 lower Tiutah beach in Barnesville is a shallow, slightly ridged tract of 

 gravel and sand, resting on the general slope of till, above which it rises 1 

 to 2 feet on the east, while its western side falls 10 or 15 feet within 20 or 

 25 rods. It lies close west of the street which, runs north from the railway 

 station for a third of a mile to the bridge crossing the Willow River (also 

 called Whiskey Creek), beyond which the street itself occupies the beach. 

 Its height in the city is 1,015 to 1,018 feet. This shore, mostly marked 

 by a well-defiued gravel ridge, runs north the next 2 miles, lying in the 

 west edge of sections 19 and 18, Humboldt, and then turns to the north- 

 northwest, passing through sections 12 and 1, Barnesville. 



Thence northward the Tintah shore-lines in Minnesota have been traced 

 in only a few localities. Through Clay and Norman counties, however, to 

 the Sand Hill River, their position is shown approximately on PI. XXV, 

 in accordance with the general westward slope of the east border of this 

 lacustrine area. 



As already noted in the description of the Norcross shore-lines (p. 387), 

 two beaches observed on the western margin of the Sand Hill delta deposit, 

 at the heights of 1,060 and 1,070 to 1,073 feet, seem referable to the upper 

 Tintah stages of the glacial lake; and the continuations of these beaches 

 are crossed by the Fosston Railway line at the elevations of 1,062 and 1,069 

 feet above the sea. Three-fourths of a mile to 1 mile west of these, and 

 at a distance of nearly 2 miles east of Benoit, this railway intersects two 

 less conspicuous beach ridges, with crests at 1,047 and 1,044 feet, which 

 are believed to mark the lower Tintah stage. 



These shore-lines are inconspicuous on the St. Hilaire railway branch, 

 but 3 to 5 miles northward several beach ridges were noted by Mr. E. C. 

 Davis in leveling for a proposed canal from the Red Lake River at Crooks- 

 ton to its southward bend at the mouth of the Thief River. A gravel ridge 

 probably belonging to the lower Tintah level of Lake Agassiz lies about 

 3 miles east of the Black River and has an elevation of 1,050 feet. The 



