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Promontory Mountains
A photo of the Promontory Mountains viewed from across Willard Bay
Promontory Mountains from the east shore of Willard Bay north of Ogden
Highest point
Peak Messix Peak[1]
Elevation 7,349 ft (2,240 m)
Coordinates 41°29′25″N 112°30′30″W / 41.490201°N 112.508377°W / 41.490201; -112.508377Coordinates: 41°29′25″N 112°30′30″W / 41.490201°N 112.508377°W / 41.490201; -112.508377
Length 35 mi (56 km) north to south
Promontory Mountains is located in Utah
Promontory Mountains
Promontory Mountains
Country United States
State Utah

The Promontory Mountains are a range in Box Elder County, Utah. The range is oriented north-south and has a length of about 35 miles (56 km). The southern portion forms a cape extending 20 miles (32 km) south into the Great Salt Lake. The First Transcontinental Railroad was completed with the Golden Spike just north of the range at Promontory Summit in the Utah Territory. Today, trains cross the Promontory Point at the southern tip of the range via the Lucin Cutoff railroad causeway across the lake.

The Great Salt Lake is to the west and south of the Promontory Mountains.


The Promontory Mountains are a block fault range typical of the Basin and Range Province. The west side of the range is bounded by the East Great Salt Lake normal fault which passes under the lake along the west side of Antelope Island and on to the south shore of the lake to the west side of the Oquirrh Mountains where it continues on strike as the Oquirrh Fault. The East Antelope Island fault runs from the east side of Antelope Island to the north beneath the lake to the east side of the Promentaries where it continues as the East Promontory Mountains fault zone.[2] These two fault systems parallel the larger Wasatch Fault which runs to the east of Great Salt Lake. The faults are normal faults which dip to the west.[3][4]


The Promontory Mountains of 35 mi (56 km) were bypassed by the First Transcontinental Railroad (north)[5] and the replacement 1904 Lucin Cutoff trestle through Promontory Point (south),[6] which was replaced by a 1959 causeway.[7]


  1. ^ "Messix Peak". Peakbagger.com. Retrieved January 13, 2013. 
  2. ^ Gwynn, J. Wallace (1980). Great Salt Lake: a scientific, historical, and economic overview (Google Books). Retrieved 2010-06-12. The Bear River Bay graben is bounded on the west by the East Promontory Mountains fault zone. ... The Antelope Island horst is bounded on the east by the East Antelope Island fault zone. 
  3. ^ W. Adolph Yonkee, et. al., ROAD AND TRAIL LOGS OF ANTELOPE ISLAND STATE PARK, DAVIS COUNTY, UTAH, Fig. 2 in Geologic Road, Trail, and Lake Guides to Utah's Parks and Monuments 2000 Utah Geological Association Publication 29
  4. ^ William R. Lund, The Oquirrh fault zone, Tooele County, Utah, in Paleoseismology of Utah, V. 6, 1996, Utah Geological Survey, Special Study 88
  5. ^ a b NPS Historical Handbook for Golden Spike National Historic Site
  6. ^ Lucin Cutoff Railroad Trestle
  7. ^ Lucin Cutoff Railroad Trestle, After the Trestle

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Promontory_Mountains — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.

6 news items


Fri, 20 Nov 2015 13:14:10 -0800

The north arm of the Great Salt Lake is physically separated from the rest of the lake by a railroad causeway. The water in the north arm is twice as salty as the rest of the lake with a salinity of over 25%. Almost no fresh water enters this area and ...

Salt Lake Tribune

Salt Lake Tribune
Tue, 03 Dec 2013 00:01:45 -0800

It is provided only for personal research purposes and may not be reprinted. Great Salt Lake • A salt-laden November fog fills the valleys of the Promontory Mountains like the crests of waves on an ocean. Thick storm clouds allow scattered streaks of ...

National Parks Traveler

National Parks Traveler
Sun, 27 Jan 2013 01:06:38 -0800

When I arrived at the historic site on a Friday afternoon, a southeast wind was carrying moist air from Great Salt Lake up over the Promontory Mountains. It was condensing into a long cloud of freezing ground fog that was dusting the landscape with big ...

Deseret News

Deseret News
Sat, 20 Jan 2007 23:30:00 -0800

Up against the Promontory Mountains, just a few miles from the "last spike" site, you can see places where dirt was pushed up and packed down to create a level surface for the tracks to be laid. "It's hard to see," said Bret Guisto, archaeologist for ...
Český rozhlas
Mon, 08 Jun 2015 01:03:45 -0700

Víme toho o nich velmi málo. Do pohoří Promontory Mountains v dnešním Utahu doputovali ze subarktických oblastí Kanady a jejich potomci dali později vzniknout indiánským kmenům Navahů a Apačů. Rytiny na skalní stěně vytvořené příslušníky fremontské ...

Space Ref (press release)

Space Ref (press release)
Mon, 07 Feb 2005 16:00:00 -0800

Ok, well, I'm back at McMurdo Station. All went very well in the field - our instruments worked great, we collected lots of data, and had an amazing time exploring a phenomenally interesting and unique little nook on planet Earth. Now for the ...

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