All Maps
Explore all USGS Maps and refine your search by type, topic, year, location, and advanced search.
Filter Total Items: 9583
Map Showing Areas Containing Swelling Clay in the Morrison Quadrangle, Jefferson County, Colorado Map Showing Areas Containing Swelling Clay in the Morrison Quadrangle, Jefferson County, Colorado
Formations that contain clays having swelling pressures higher than 2,500 pounds per square foot (as measured by the Potential Volume Change meter) are listed in order of decreasing swelling pressure: Denver Formation, Pierre Shale, Laramie Formation, Green Mountain Conglomerate, Fox Hills Sandstone, and Arapahoe Formation. Some landslides derived from these formations also contain...