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STOP #3

EGG ISLAND 
OVERLOOK
Students and teacher on Egg Island Overlook - Antelope Island State Park, Great Salt Lake

 

Antelope Island: 
Geology, Geography and Birds
 

Geology and Geography:

    Tintic Quartzite - tilted beds on Antelope Island Tintic Quartzite - closeup

    Walk north from the Egg Island parking lot to a prominent point of land. You will soon find yourself climbing over tilted and eroded tan-colored rock outcrops of Tintic Quartzite. These rock formations belong to the Farmington Canyon Complex and are very old.  See the geology map from the Utah Geological Survey. 

    Climb onto the rocks and look around--what can you see?  Look at the general locational map of the Great Salt Lake area as well as the more detailed  map of northern Antelope Island. Look east along the shore--you should see the marina and home of the Great Salt Lake Yacht Club --the saltiest sailors in the world.

    East along shore toward marina & causeway - thumbnail Closer view of Syracuse-Antelope Island causeway - thumbnail

    Farther to the east you can see the causeway which connects to the mainland.  Farther in the distance are the Wasatch Mountains and Wasatch Front cities and towns of Davis and Weber County such as Ogden, Farmington, Bountiful and Syracuse. To the east-northeast you may see military aircraft from Hill Air Force Base heading out west of the Great Salt Lake to their electronic warfare test range. 


 

    Bridger Bay and Stringham Peak in background - thumbnail Another view of Bridger Bay & Buffalo Point - thumbnail

    Directly south is the "spine" of a prominent north/south-trending range of mountain peaks that are part of the Basin and Range topography that is typical of the Great Basin Region. The highest peak above Bridger Bay is Stringham Peak

    Overview of Bridger Bay and Buffalo Point in distance Looking west and southwest across Bridger Bay you see Buffalo Point.  

Bird Life on the Lake

Swing your view more toward the northwest and you will see a small rock-outcropping in the lake--this is Egg Island. It is one of the most important California gull "rookeries" in North America.  In fact, Utah is one of the best places in North America to view migratory birds of all types. Read more about birds on the Great Salt Lake at the website produced by the USGS Great Salt Lake page (see also the USGS-NBII - Great Basin Information Project) for more on biodiversity and related issues. 

To the north-northeast you look toward the Bear River Migratory Bird Refuge in northern Utah, Box-Elder County near Brigham City (see map below). Learn more at Northern Utah Wildlife or Utah.com or USFWS.



    The MBR is one of the most important breeding grounds for many types of birds in the western hemisphere.  The MBR and its associated wetlands and marshes are a prime stopover point for birds that travel from northern Canada to South America on the Pacific Flyway .  On the MBR's homepage you can read about the history and ecology of  the saltwater and freshwater marshes on the Bear River delta and farther upstream in Cache Valley. Some of the fresh-water marshes are man-made, such as Willard Bay which is also a popular boating site.

Learn more at about the Great Salt Lake Hemispheric Reserve of the U.S. National Wildlife Service - National Refuge System (Region 6). See also the National Geographic site on wildlife refuges in general. See also Western Hemisphere Shorebird Reserve Network from Manomet Center for Conservation Sciences--links to the Great Salt Lake and Mono Lake.and from SELECT SOURCES

South of the MBR around Little Mountain are extensive evaporation ponds of the Harris Group / Great Salt Lake Minerals Division (photo below).  

evaporation ponds - thumbnail Learn more about the Salt Industry and salinity and water quality issues from the USGS. Can you find the evaporation ponds on the following map or on satellite images of the Great Salt Lake? 

GO TO STOP #4

Drive west from Egg Island to Bridger Bay beach. Here you can wade into the water or explore several beach zone habitats--from mud-flats to beach-face dunes or sagebrush flats up-slope. You many want to take a short side-trip to the Visitor Center which is on a hillside nearby. 

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Created 9/15/96 - Last Revised: 6/10/04 - Robert E. Ford Email: rford@univ.llu.edu