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Service Description: 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.

Map Name: Drift_Thickness

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Description: 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.

Copyright Text: Illinois State Geological Survey

Spatial Reference: 102100  (3857)


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Spatial Reference: 102100  (3857)

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Spatial Reference: 102100  (3857)

Units: esriMeters

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Comments: 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.
Subject: Glacial Drift in Illinois: Thickness and Character
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Keywords: glacial,drift,unconsolidated,till,glaciofluvial,glaciolacustrine,loess,driftless,Illinois
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