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Pahvant Butte is a volcano that erupted around 15,500 years ago from under Lake Bonneville - the massive freshwater lake that covered a good part of Utah at the time and was the parent of the present day Great Salt Lake. Now, Pahvant Butte sits high and dry in the Sevier desert, northwest of Fillmore, Utah and southeast of Delta, Utah.
All the rocks here are basalt derived. The gray-black rocks here are ash. The tan-orange rocks are palagonite, a rock formed by basalt when it interacts with water during its eruption.
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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
