Perhaps some of you felt the shaking late last night in Salt Lake Valley. The University of Utah seismographs recorded a Magnitude 3.3 earthquake 11 Miles ESE of Centerville, UT, at 10:34 PM.
standard.net
Although Wednesday night’s earthquake wasn’t particularly impressive, seismically speaking, it sent a shock wave — both literally and figuratively — throughout northern Utah.
Happy Memorial Day!
Great Salt Lake viewed from Antelope Island, Davis County, Utah
Photographer: Chris DuRoss; © 2013
Great Salt Lake occupies a large basin formed by horizontal stretching of the Earth’s crust across the region. This stretching produces movement on faults, resulting in uplift of mountain ranges adjacent to the
basins and occasional magnitude 6.5–7.5 earthquakes.
A stunning Utah view.
Antelope Island & Farmington Bay, Great Salt Lake, Davis County, Utah
Photographer: Ken Krahulec; © 2012
Antelope Island State Park, Davis County, Utah
Photographer: Paul Inkenbrandt; © 2012
Storm clouds clear over Bridger Bay and Antelope Island, the largest island in Great Salt Lake. Much of the island, including Stringham Peak (left background; elevation 6,345 feet), is made up of Precambrian-age rocks that are some of the oldest rocks in Utah (600 million to 2.5 billion years old).
Great Salt Lake, Davis County, Utah
Photographer: Carole McCalla
Antelope Island, approximately ten miles long and four miles wide, is the largest island in Great Salt Lake. The island, which becomes a peninsula when lake levels are low, has easily accessible outcrops of some of the oldest (Precambrian-aged) rocks in Utah. It is also home to a variety of wildlife including pronghorn, bison, bighorn sheep, and millions of waterfowl.
Joseph M. Dougherty Deseret News
A new report by the Utah Geological Survey shows that Deuel Creek in Centerville Canyon, given the right conditions, could dump 196,000 cubic yards of mud on Centerville homes.
The last time Deuel Creek had a devastating debris flow event was, well, never.
But creeks in similar canyons to the north of Centerville Canyon have produced debris flows, which are characterized by large amounts of mud, rocks, trees and boulders. That’s different from a flood, says UGS geologist Rich Giraud, which is mostly water with some eroded material.
SURFICIAL GEOLOGIC MAP OF THE SALT LAKE CITY SEGMENT AND PART OF ADJACENT SEGMENTS OF THE WASATCH FAULT ZONE, DAVIS, SALT LAKE, AND UTAH COUNTIES
(digitized from U.S. Geological Survey Miscellaneous Investigation Series map I-2106, 1992)
Stephen F. Personius and William E. Scott
This map shows the surficial deposits and the faults that offset them along the Salt Lake City segment and adjacent parts of the Weber and Provo segments of the Wasatch fault zone in north-central Utah. The map area includes the central and eastern parts of the Salt Lake Valley, including metropolitan Salt Lake City and its southern suburbs. Although a major surface-faulting earthquake has not occurred on the Wasatch fault zone since the state was settled in 1847, the geologic record contains abundant evidence of large earthquakes during Holocene and late Pleistocene time. The size, age, and distribution of fault scarps produced by these prehistoric earthquakes can be used to determine the most likely sites for future earthquakes, and are therefore the principal focus of the map.
CD (2 pl., 1:24,000 [contains GIS files])
M-243DM……….$24.95
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The Utah Geological Survey (UGS) is a division of the Utah Department of Natural Resources. Several specialized programs comprise the UGS: Data Management, Energy & Minerals, Geologic Hazards, Geologic Information & Outreach, Geologic Mapping, Groundwater & Wetlands, and Paleontology.