typically present over till, were the total beach material. Glacial till 

 was also exposed in the plunge zone. 



A moderately well developed beach was present at the beginning of the 

 study. By September 1970, most of the beach was eroded with a concentra- 

 tion of heavy minerals in the backshore zone. There was some beach accre- 

 tion by the next survey, followed by terrace erosion totaling 18 feet of 

 recession during November and December 1970. A demonstration of the rapid 

 recovery of the active beach was evident between the October and November 

 1970 surveys. Although there was erosion to the terrace, the beach was 

 wider in November than in October. This indicated that the beach and ter- 

 race eroded after the October survey, and there was sufficient beach recov- 

 ery to cause a net increase in beach width from October to November. By 

 December 1970, the beach was comprised of coarse cobbles only. This was 

 also true following ice breakup in the spring. After terrace erosion and 

 modest beach accretion in May 1971, there was no appreciable change in 

 beach geometry. 



Erosion caused an overall decrease in the beach width in August but 

 there was accretion and the presence of a ridge and runnel feature in 

 September 1971. Throughout the fall of 1971 there was continued accre- 

 tion which resulted in the beach becoming wider than it was at the begin- 

 ning of the study. After the shore-ice breakup in the spring of 1972, 

 there was a 5-month period of modest erosion with some terrace retreat. 



Erosion accelerated in September 1972, continuing until November when 

 modest accretion was apparent. More beach erosion followed with the ter- 

 race receding 4 feet. Erosion in March and April occurred after the ice 

 breakup, followed by accretion; little change occurred from then to the 

 termination of the survey. 



f. Profile Site 6 . This site is located just north of the lighthouse 

 at Little Sable Point, near a large area of active dunes adjacent to Silver 

 Lake. The dunes in the immediate vicinity of the profile are fairly well 

 stabilized by grass and poplar trees. Accretion was occurring in the fore- 

 dunes, and there was almost 1 foot of sand accumulation around the marker 

 stake during the course of study. 



At the beginning of the study, this site had the broadest and best- 

 developed beach of all those surveyed. There was some minor beach erosion 

 in September 1970, but it was followed by accretion. No appreciable 

 changes took place until minor beach erosion occurred in July 1971. 



The second year was similar in that minor erosion occurred in September 

 1971. No other appreciable change was noted during the year except for 

 some beach accretion following the spring breakup of shore ice. 



Appreciable erosion of the beach preceded the August 1972 survey and 

 continued through September when 12 feet of recession occurred at the base 

 of the dune. More dune retreat was noted in December 1972. The beach was 

 narrow throughout the fall and after the breakup of shore ice. More erosion 



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