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Showing posts from December, 2025

Pavant Thrust, Central Utah

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 Sevier-Laramide Project: The Pavant Thrust near Fillmore, Utah See one of Utah's best-exposed thrust faults in the scenic and accessible Pavant Mountains! Notes Travel :  Fillmore has hotels and accommodations, and is located conveniently along Interstate 15. Access :  The canyon and mountain roads provide good access into the mountains.  They're rocky and steep in places, requiring tires and clearance appropriate for the terrain.  I'd only take a car into the lower parts of either canyon. Camping :  Chalk Creek and Kanosh Canyons have good campgrounds and primitive campsites. Geologic map of the Pavant Range, from the Richfield 30 x 60 minute geologic map by Hintze and others, 2003 published by the Utah Geological Survey, Map 195.   GEOLOGIC MAP OF THE RICHFIELD 30' x 60' QUADRANGLE,  SOUTHEAST MILLARD COUNTY AND PARTS OF BEAVER, PIUTE, AND SEVIER COUNTIES, UTAH   by   Lehi F. Hintze1,2, Fitzhugh D. Davis2, Peter D. Rowley3, Charl...

Canyon Range thrust, Utah

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Canyon Range Thrust, West-Central Utah Sevier-Laramide Project Looking north in East Fork of Eightmile Creek in the Canyon Range. The Canyon Range is the place the Sevier orogeny is named for because the thrust faults are parallel to the Sevier River, and the river sweeps around the north end of the range to empty into the Sevier desert.  It's a natural!  Of all the places where I've visited the Sevier faults and folds, this may be my favorite because of its unique scenery, beautiful quartzite bedrock, remoteness, and geologic significance. The range is made of Proterozoic metasedimentary rocks (quartzite, metasiltstone, and slate) overlain by Cambrian, Ordovician, and Silurian sedimentary rocks.  The rocks here are beautiful!  I went home with hundreds of pounds of quartzite with cross-bedding, coarse clasts, and colorful bands.   Access on the south end is by primitive 2-track roads that are rocky, rough, narrow, and little used, so I advise a good 4WD (...