. Beach profile changes - east coast of Lake Michigan, 1970-72. Beach erosion; Coast changes. Geomorphology. Beach at Summit Township Park (Mason County) has a shoreline orientation of °W. and is adjacent to bluffs of glacial drift. At times, glacial till was observed cropping out just lakeward of the plunge step. Foreshore comprised of well-sorted and rounded cobbles. Large percentage of the sand in backshore is from a sand terrace where the upper swash of waves has undercut the terrace and vertical slope has failed. Bench Mark Location (5 August 1970) (,mh, sec. 23, N. , R. 18 W.). I
. Beach profile changes - east coast of Lake Michigan, 1970-72. Beach erosion; Coast changes. Geomorphology. Beach at Summit Township Park (Mason County) has a shoreline orientation of °W. and is adjacent to bluffs of glacial drift. At times, glacial till was observed cropping out just lakeward of the plunge step. Foreshore comprised of well-sorted and rounded cobbles. Large percentage of the sand in backshore is from a sand terrace where the upper swash of waves has undercut the terrace and vertical slope has failed. Bench Mark Location (5 August 1970) (,mh, sec. 23, N. , R. 18 W.). Immediately fronting large, dead maple tree, just south of Summit Park. Azimuths (from north): 83°04', north of maple tree; 20l''lS', Little Sable Point; 343°19', end of groin; 351°39', large stump west edge. June 1970. 11 August 1971 Figure 10. Location and geomorphology of profile site 5. 30. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Davis, Richard A. (Richard Albert), 1937-; Fingleton, W. G; Pritchett, P. C; Coastal Engineering Research Center (U. S. ); Western Michigan University. Ft. Belvoir, Va. : U. S. Dept. of Defense, Dept. of the Army, Corps of Engineers, Coastal Engineering Research Center ; Springfield, Va. : for sale by the National Technical Information Service
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