Tag Archive for: geologic mapping

Utah Geological Survey
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Interim Geologic Map of the Steves Mountain Quadrangle, Sevier County, Utah

OFR-646 Insert cover

By:Hellmut H. Doelling and Paul A. Kuehne

The Steves Mountain quadrangle in central Utah spans the southernmost Wasatch Plateau and northernmost Fish Lake Plateau and is crossed by Interstate 70. Late Cretaceous to late Eocene strata are folded westward on the west flank of the Wasatch monocline, and are cut by generally north-tranding horsts and grabens, including the Water Hollow fault zone in the eastern part of the quadrangle. Large landslides and slope creep are common on several incompetent units.

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Utah Geological Survey
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Interim Geologic Map of the Gooseberry Creek Quadrangle, Sevier County, Utah

OFR-641 Insert cover

By: Paul A. Kuehne and Hellmut H. Doelling

The Gooseberry Creek quadrangle in central Utah covers the northwestern end of the Fish Lake Plateau. The Gooseberry Road, a popular scenic link between Interstate 70 and the Fish Lake Recreation Area, traverses the quadrangle; climbing to over 10,000 feet in elevation, it is one of the highest paved highways in the state. Late Cretaceous to late Eocene strata dip gently westward, are cut by several steep normal faults, and are folded into the west-facing Wasatch monocline near the west side of the quadrangle. Oligocene volcanic rocks of the Marysvale volcanic field extend into the southern part of the quadrangle. Rock glaciers, large landslides, colluvium, and alluvium are common.

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Utah Geological Survey

Field Review: Torrey 7.5’ Quadrangle , Wayne County, Utah

Check out our latest geologic mapping field review of the Torrey 7.5’ Quadrangle, Wayne County, Utah. The review is open to the public, and will be held April 1, 2016. Find more info HERE.

Utah Geological Survey

Geologic and Geophysical Maps and Volcanic History of The Kelton Pass SE and Monument Peak SW Quadrangles

MP-16-1DM CD Insert

By:Tracey J. Felger, David M. Miller, Victoria E. Langenheim, and Robert J. Fleck

The Kelton Pass SE and Monument Peak SW 7.5′ quadrangles (NW Utah) are located entirely within southern Curlew Valley, which drains south into Great Salt Lake, and extends north into Idaho. Bedrock exposures form the Wildcat Hills and two small shield volcanoes. Exposed rocks and deposits are Permian to Holocene in age and include sandstone of the Permian Oquirrh Formation, tuffaceous sedimentary rocks of the Miocene Salt Lake Formation, Pliocene basaltic and dacitic lava flows, Pleistocene rhyolite and basalt, and Pleistocene and Holocene surficial deposits of alluvial, lacustrine, and eolian origin. Structures related to the Miocene Raft River detachment fault and Basin and Range extension also are present. New geophysical data and interpretations and new geochronology data for volcanic units improved insight into the tectonic and volcanic evolution of the area.

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Utah Geological Survey

Geologic Map of The Donkey Flat Quadrangle, Uintah County, Utah

MP-16-2DM Insert

Geologic Map of The Donkey Flat Quadrangle, Uintah County, Utah

By: Paul H. Jensen, Douglas A. Sprinkel, Bart J. Kowallis, and Kent D. Brown

The Donkey Flat quadrangle is less than 10 miles north-northeast of Vernal, Utah, along the south flank of the Uinta Mountains in Uintah County. It includes Red Fleet State Park and is crossed by U.S. Highway 191 (a National Scenic Byway). The geology is well exposed and uncomplicated, making a dramatic landscape with thick sandstone cliffs and varicolored to drab gray slopes. The quadrangle’s namesake, Donkey Flat, is a one of several geomorphic surfaces mantled by piedmont gravel deposits.

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Utah Geological Survey

Paleoseismology of Utah, Volume 27: Geologic Mapping and Paleoseismic Investigations of the Washington Fault Zone, Washington County, Utah, and Mohave County, Arizona

MP-15-6 cd cover PALEOSEISMOLOGY

Edited By: William R. Lund

This publication presents four investigations that provide new geologic and paleoseismic data on the Washington fault zone in southwestern Utah and northwestern Arizona. (1) New 1:24,000-scale geologic mapping shows the location and length of young surface ruptures and the relative ages of displaced surficial deposits along the fault zone. Based on the mapping, the former Northern section of the fault zone has been subdivided into the Fort Pearce and Washington Hollow sections. (2) A paleoseismic trenching investigation of a scarp on a latest Quaternary alluvial fan in Arizona that provides information on paleoearthquake timing, displacement, and recurrence for the Fort Pearce section, which traverses the St. George metropolitan area. (3) Trace element and major oxide geochemical correlation and radiometric dating of volcanic flows displaced across the fault that provide early to middle Quaternary vertical slip-rates for the Fort Pearce and Sullivan Draw sections of the fault.. (4) A geotechnical investigation that provides information on fault locations, paleoearthquakes, and displacement no the Fort Pearce section. These investigations show the Fort Pearce section of the Washington fault zone has experienced at least two surface-faulting earthquakes in the Holocene and a minimum of five earthquakes in the past ~68 ka.

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Utah Geological Survey

Interim Geologic Map of the Morgan 7.5′ Quadrangle, Morgan County, Utah

 

OFR-643 InsertMedRGB

By: James C. Coogan, Jon K. King, and Greg N. McDonald

The Morgan 7.5′ quadrangle, named for the city of Morgan, is located southeast of Ogden, Utah, and is transected by Morgan Valley where the Weber River, U.S. Interstate Highway 84, and Union Pacific Railroad are located. In the map area, the east-dipping limb and part of the Wasatch anticlinorium are exposed on Durst Mountain, east and north of the Weber River. Interpretations of the geology on Durst Mountain begin with back-rotation of this limb of Paleozoic rocks. Younger Paleozoic and Mesozoic rocks in the limb are exposed to the east in the Devils Slide quadrangle. At least 8000 feet (1800m) cf folded Cenozoic sedimentary rocks fill the fault-bounded Morgan Valley. Some fault scarps are Quaternary in age. The most notable fill is the Eocene and Oligeocene(?) Norwood Formation that underlies roughly the west half of the quadrangle. These altered tuffaceous rocks are prone to landsliding. This CD contains two plates-a geologic map at 1:24,000 scale and an explanation plate-and a 25-page booklet, all in PDF format.

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