Utah Geological Survey

MAP 238

GEOLOGIC MAP OF THE GRANITE PEAK AND SAPPHIRE MOUNTAIN AREA, U.S. ARMY DUGWAY PROVING GROUND, TOOELE COUNTY, UTAH
Donald L. Clark, Robert F. Biek, Grant C. Willis, Kent D. Brown, Paul A. Kuehne, J. Buck Ehler, and Carl L. Ege

This area is located in west-central Utah within the eastern Basin and Range Province, near the southern margin of the Great Salt Lake Desert, and within the confines of Dugway Proving Ground.  Granite Peak consists of a granitic intrusion that is Late Jurassic in age (149 million years old).  The upper part of the intrusion was altered and intruded by numerous pegmatite dikes.  Metamorphic rocks of likely Paleozoic or Proterozoic protoliths are exposed at the far south end of the mountain.  These granitic and metamorphic rocks were exhumed during Basin and Range extension, likely from about 15 to 5 million years ago.  Sapphire Mountain is a Miocene-age rhyolite flow that erupted 8 million years ago.  Quaternary surficial map units include lacustrine, alluvial, and eolian deposits, and desert mudflats.  Three of the four primary shorelines of the Bonneville lake cycle are preserved on the mountains’ flanks.

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Utah Geological Survey

A CALL FOR HOME ENERGY RETROFIT GRANT APPLICATIONS

Utah is making a multi-million dollar investment in residential energy efficiency. The Utah State Energy Program (USEP) has issued a Request for Grant Applications (RGA) for a Home Performance with ENERGY STAR program. Home Performance with ENERGY STAR offers a comprehensive approach to improving energy efficiency in existing homes.

USEP will award up to $4.5 Million for this program. The Home Performance with ENERGY STAR program will include activities such as:

  • establishing market baselines and performance indicators,
  • contractor training opportunities,
  • homeowner outreach,
  • home performance assessments and a utility bill analysis,
  • projected cost-effectiveness of energy retrofits,
  • installation of energy efficiency measures, and
  • incentives for participation.

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Utah Geological Survey

TWO NEW FOSSIL RODENTS DISCOVERED IN UTAH

A newly-published report describes the discovery of two new prehistoric rodents in Utah. The report also identifies two fossil rodents and a rabbit previously known from other states. All are from a site near Sevier in central Utah.

“In addition to identifying the new species, the findings are significant because until now, Utah has been a big hole in the Miocene map of western North America for fossil mammals,” said Don DeBlieux, report co-author and paleontologist with the Utah Geological Survey (UGS). “The uplift and erosion of the Colorado Plateau which makes Utah such a good place for finding dinosaur fossils means that younger rocks and fossils, such as those from the Miocene Epoch which lasted from 23 to five million years ago, have been washed way.”

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Utah Geological Survey

COUNTY TO WEIGH IN ON SUBDIVISION

The Spectrum

In light of the proposed Capo Di Monte subdivision on Cedar Mountain, the issue of the west facing side being declared a landslide, one of the largest in the state, is up for debate at Thursday’s Iron County Planning Commission meeting.

The Cedar Highlands subdivision exists on the mountain and has activated two of the smaller landslides since comprehensive studies were completed in 1981, which found the larger landslide to be inactive.

Bill Lund, Utah Geological Survey geologist, said based on his findings he would recommend that more research be done on the mountain before making any decisions to approve further development.

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Utah Geological Survey

UTAH GEOLOGIST HONORED FOR LIFETIME'S WORK

Fox 13

A Utah geologist was recognized for keeping Utahns safe. Geologist William Lund ate, slept, and studied fault lines and earthquakes for a number of years for the Utah Geological Survey, which has studied and investigated geologic hazards in Utah for more than 40 years. “I’m very honored and surprised, I had no idea, but it’s truly an honor and I’m happy,” Lund said.

Lund said he has spent a good part of his career trying to characterize past big earthquakes and figure out what might happen in the future.

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