Central Great Lakes Geologic Mapping Coalition Drilling
The 2008 drilling season began on September 8, 2008, with six sites scheduled for drilling in Lake County forest preserves and two in McHenry County Conservation District locations. Boreholes to bedrock were completed at Van Patten Woods Forest Preserve-Sterling Lake (total depth 145 feet), Lyons Woods upland (180 feet), and Lyons Woods lowland (170 feet). A fourth borehole at Greenbelt Forest Preserve is under way. Drilling this season is focused on acquiring high-quality core from locations along the crests of several moraines of the Lake Border Morainic System and in areas within and immediately adjacent to the Zion Quadrangle, which is the current STATEMAP mapping project in Lake County.