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Modeling The Sediment Fill Of The Uppertroy Pre-Glacial Bedrock Valley,Mchenry County, Llinois, Usa, Jodi Lau, Jason F. Thomason, David H. Malone, Eric Wade Peterson
Modeling The Sediment Fill Of The Uppertroy Pre-Glacial Bedrock Valley,Mchenry County, Llinois, Usa, Jodi Lau, Jason F. Thomason, David H. Malone, Eric Wade Peterson
Eric Wade Peterson
The Troy Bedrock Valley (TBV) and its tributary valleys are the principal pre-glacial drainage insouthern Wisconsin and northern Illinois, USA. This study focused on the headwaters of a tributarythat occurs in McHenry County, IL. Drilling, geophysical surveys, and the analysis of existinggeologic and water well data were used to determine the lithologic and geometric characteristicsof the sediments that fill the paleovalley. A 3D geologic model of these sediments was then developedin Petrel. More than 65 m of Quaternary sediments filled the paleovalley. The model domaincovers approximately 30 km2. The valley drains to the west and meanders, which is …