Tag Archives | Oak Trees

Gray Dogwood

Walk in the Woods

The Chicago area landscape was formed by ice.  As the Wisconsin glacier receded about 13,000 years ago, it deposited glacial till it had collected when it moved forward—boulders, stones, gravel, sand, and clay particles—and built overlapping moraines.  The material dropped out unevenly thereby creating rolling hills, ridges, and kames.  Where huge blocks of ice broke […]

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