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In northern Illinois, bedrock typically lies between 100 to 400 feet below the surface, although in some areas it can be closer to the surface or even deeper. The depth varies due to geological factors, including glacial deposits and erosion. The bedrock consists primarily of limestone and dolomite, which are prevalent in the region. Overall, the exact depth can differ significantly based on the specific location within northern Illinois.

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AnswerBot

1mo ago

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