AAPG© 1997 - Reprinted by permission of the AAPG whose permission is required for further use.

Heaving-Bedrock Hazards, Mitigation,
and Land-Use Policy:
Front Range Piedmont, Colorado

DAVID C. NOE
Colorado Geological Survey, 1313 Sherman Street, Room 715, Denver, CO 80203

Cover Photo: Surface view of a near-vertical bentonite layer in the Upper Cretaceous Pierre Shale in Jefferson County, Colorado. The layer heaved with a differential displacement of 8 cm within 24 hours after a rainstorm at this construction area. Note the hump in the fence aligned with the trend of the bentonite layer. Heaving bedrock damage is occuring in the 2.5-year-old subdivision in the background. Photograph by David C. Noe.

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NOTE: This information is provided for general education only. For detailed information concerning reactive soils, you should always contact a geotechnical firm.



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