GEOLOGY OF MOSQUITO LAKE STATE PARK, TRUMBULL COUNTY, OHIO AND WEST BRANCH STATE PARK, PORTAGE COUNTY, OHIO
Mosquito Lake State Park is not only one of the largest lakes in Ohio but the park contains three distinct glacial features: portion of the Defiance End Moraine, 40 to 70 feet thick, located in the southeastern sections of the park; ground moraine, 10 to 20 feet thick, forming the relatively flat surface of the western section of the park; and lacustrine deposits of former Rock Creek Lake located in the northern part of the park.
West Brach State Parks subsurface bedrock units consist of Devonian to Pennsylvanian shales and sandstones. The bedrock was covered by several ice advances of the Wisconsinan Glacier that left behind three distinct glacial features: a buried stream valley filled with up to 350 feet of drift material, now occupied by the present stream and reservoir; ground moraine, 15 feet thick, covering the hills on the southern section of the park; and the Kent End Moraine on the northern part of the park.
The goal of our research is to gain an understanding of the geology in the state parks.