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

FIGURE 7: Assymetrical heave feature in a graded cut caused by sudden, thrust-like heaving of the bedrock block on the right. This feature formed along a preexisting fracture plane. More than 30 cm of prior Holocene displacement was evident along the plane (at a point in the cut wall marked by the wooden stake) when the cut was first exposed. The heaving episode shown here occured within 24 hrs after a rainstorm and resulted in another 8 cm of total displacement.

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



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