Devil's Playground, pegmatites
by Calvin Jones
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Devil's Playground, pegmatitesThe World > North America > USA > Utah |
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"small magma bodies intruded into the granitic rock forming pegmatites (coarse-grained igneous rocks with interlocking quartz crystals, usually found as irregular dikes or veins). The pegmatites are fairly common, several inches in thickness, and extend hundreds of feet. They represent the last and most hydrous (waterrich) portion of magma to crystallize. The pegmatites are easy to locate because they are more resistant than the surrounding rock, thus they resemble ribs and bones sticking out in relief."
See: http://geology.utah.gov/surveynotes/geosights/devils_playground.htm
"Located on Bureau of Land Management and state land, Devils Playground is a relatively unknown geol...
"Located on Bureau of Land Management and state land, Devils Playground is a relatively unknown geolo...
There isn't much in the way of non-technical discussion of the origin of the Devil's Playground. The ...
"Located on Bureau of Land Management and state land, Devils Playground is a relatively unknown geolo...
"Located on Bureau of Land Management and state land, Devils Playground is a relatively unknown geol...
Camping site at the "Devil's Playground"."Located on Bureau of Land Management and state land, Devils...
There isn't much in the way of non-technical discussion of the origin of the Devil's Playground. The ...
Driving north into the City Of Rocks National Reserve. The rock formation ahead is the Twin Sisters....
Camping spot #3 at the City Of Rocks National Reserve, Idaho at the base of the "Twin Sisters" rock f...
Rock Climbers on the top of Elephant Rock at City of Rocks National Reserve, Idaho. City of Rocks is...
Utah is a state located in the westcentral region of the United States of America. Utah is the 13th largest state by area, ranks 34th by population and 10th by population density of the 50 United States. Utah was the 45th state to be admitted into the Union, on January 4, 1896. Utah is landlocked, being bordered by the states of Idaho to the north, Wyoming to the northeast, Nevada on the west, Colorado on the east and Arizona to the south. Utah is very mountainous and is a popular outing destination of the outdoorsman. The state population is about 2.82M with 95% being Caucasian, 2.4% Asian, 1.7% Native American and 1.3% Black. The state capital and largest city is Salt Lake City.
Source: wikipedia
