M'CAULEYVILLE BEACHES IN MINNESOTA. 431 



My next ol)serv;iti(>us ot" tlie McCauleyville beach are 10 to 15 miles 

 farther north, in the townships of Spring- Creek and Libert)'. A large 

 gravel and sand ridge, situated about two-thirds of a mile west of the 

 Campbell escarpment, runs from south to north along the east edges of 

 sections 9 and 4, Spring Creek, and sections 33 and 28, Liberty, to the 

 Sand Hill River. Mr. Jacob Stambaugh's house is built on the top of this 

 beach, in the northeast corner of section 33; and two aboriginal mounds, 

 each about 3 feet high, were noted on the same ridge, one close north and 

 the other a third of a mile south of this house, but no other Lidian mounds 

 are known in the vicinity. 



The following- notes of elevations describe a section (fig. 21) drawn 

 from east to west, at Mr. Stambaugh's, across the Campbell and McCauley- 

 ville shore-lines. From the crest of the Campbell escarpment of till, 1,010 

 feet above the sea, there is a descent westward to a hollow of till a third 



Camp6e/I £scarpment £ 





.H'^-rTlLL: 



lOOO 



Fio. 21. — Section of the Camiibell aud McCauleyville beaches in sections 33 and 34, Liberty, Minn. Horizontal scale 

 one-fourth mile to an iuch. 



of a mile wide, extending from south to north, at 980 to 975 feet; and 

 west of this the McCauleyville beach ridge rises to 990 feet, holding this 

 elevation, within 1 or 2 feet of variation above or below it, for a dis- 

 tance of at least 2 miles. Next westward the beach falls about 15 feet 

 within 20 rods, and bears on its western border a secondary beach ridge, 

 which in its most definite portions rises 4 or 5 feet from the east and falls 

 about 10 feet on the west. The western base of this lower beach ridge is 

 970 feet above the sea, wliich represents very nearly the latest McCauley- 

 ville stage of Lake Agassiz, probably 10 to 12 feet below its earlier stage, 

 when the higher principal beach was accumulated. 



For nearly 25 miles between the Sand Hill and Red Lake rivers the 

 McCauleyville shore has not been traced on the ground, but it is mapped 

 approximately on PI. XXVI, and is so shown by fig. 22, in accordance 

 with the known westward descent of the surface. It lies mostly about a 



