Interim Geologic Map of the Huntsville Quadrangle, Weber and Cache Counties, Utah (OFR-772DM)

by Greg N. McDonald, Adam P. McKean, Zachary W. Anderson, Elizabeth A. Balgord, and W. Adolph Yonkee

Summary

The Huntsville 7.5' quadrangle lies within Ogden Valley, a back valley of the Wasatch Range in Weber County, Utah, about 6 miles (10 km) east-northeast of Ogden City. The quadrangle is centered on Ogden Valley with the Wasatch Range on the east and west side of the valley. Major drainages include the North, Middle, and South Forks of the Ogden River, and Wolf Creek. Pineview Dam, built in 1937 at the head of Ogden Canyon, impounds all surface flow from Ogden Valley and forms the distinctly shaped, three-armed Pineview Reservoir. The mountains surrounding the valley are composed of tilted and deformed Mesozoic, Paleozoic, and Neoproterozoic sedimentary, and Neoproterozic to Paleoproterozoic metamorphic bedrock that are structurally overlain by Paleozoic to Mesoproterozoic rocks of the Willard thrust sheet. The older rocks are erosionally beveled and in places unconformably overlain by Paleogene and Neogene rocks. Notable landslide-prone units in the Willard sheet include argillic members of the Maple Canyon Formation and Formation of Perry Canyon that are particularly stark in the mountains west of Pineview Reservoir where large-scale landslide complexes compose much the range. The Neoproterozoic Kelley Canyon Formation is widespread along the east margin of Ogden Valley where it is highly altered and weathers to clay-rich, landslide-prone residual deposits that contain persistently active landslides. The Wasatch, Norwood, and Salt Lake Formations are prone to landsliding and have swelling clays with numerous documented occurrences of damaging landslides. 

Other Information

• Published: 2025
• Pages: 26
• Plates: 2
• Scale: 1:24,0001:24
• Location: Utah
• Media Type: Folded or rolled paper map with report

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