Glacial Drift in Illinois: Thickness and Character
Glacial drift in Illinois: thickness and character. Unconsolidated deposits, mainly glacial drift, overlie the bedrock surface in most of Illinois. The thickest drift occurs in major preglacial valleys cut into the bedrock and filled with glacial sediments.
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{'Title': 'Drift Thickness', 'Author': 'Illinois State Geological Survey', 'Comments': 'Glacial Drift in Illinois: Thickness and Character', 'Subject': 'Glacial Drift in Illinois: Thickness and Character', 'Category': '', 'AntialiasingMode': 'None', 'TextAntialiasingMode': 'Force', 'Keywords': 'glacial,drift,unconsolidated,till,glaciofluvial,glaciolacustrine,loess,driftless,Illinois'}
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