Origin and significance of a late Wisconsin glacigenic sequence and associated periglacial features at Cary, Illinois
- Northern Illinois Univ., DeKalb, IL (United States). Dept. of Geology
The glacigenic sequence exposed in Cary, Illinois, provides insight into the depositional processes that shaped the Woodstock End Moraine of the Lake Michigan Lobe. The Moraine was formed by a short re-advance which occurred during the last deglaciation approximately 15,000--16,000 years B.P. In order to determine the sedimentary processes that dominated this ice marginal setting, the authors described lithofacies and their associations, glaciotectonic and sedimentary structures, as well as clast fabric. In addition, they performed laboratory analyses of grain size, lithology and shape. The glacigenic sequence represents one single ice advance/retreat as represented by five distinct facies. The complex of deposits that overlie the homogeneous diamicton layer originate from a stagnant ice environment. Their presence extends the northern limit for documented relict patterned ground in NE Illinois.
- OSTI ID:
- 5011920
- Report Number(s):
- CONF-9303210-; CODEN: GAAPBC
- Journal Information:
- Geological Society of America, Abstracts with Programs; (United States), Vol. 25:3; Conference: 27. annual Geological Society of America (GSA) North-Central Section meeting, Rolla, MO (United States), 29-30 Mar 1993; ISSN 0016-7592
- Country of Publication:
- United States
- Language:
- English
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