PHOTO GALLERY

US National Parklands are great places to explore GEOLOGY!

Bryce Canyon National Park, Utah These structures are called hoodoos, and they are a result of weathering and erosion. Photo by R. Feldmann.	Canyonlands National Park, Utah Arches, mesas, canyons, and buttes are all results of weathering and erosion. Photo by R. Feldmann.
Hawaii Volcanoes National Park, Hawaii Entrail pahoehoe lava forms from low viscosity flows. Photo by R. Feldmann.	Hawaii Volcanoes National Park, Hawaii Low viscosity lava flows tend to move quickly downslope. Photo by the USGS.

Arches National Park, Utah Arches form from weathering and erosion by water and were smoothed and sculpted by wind. Photo by R. Feldmann.	Arches National Park This ephedra plant, also called Mormon tea, is a primitive angiosperm, or flowering plant. Photo by R. Feldmann.
Mesa Verde National Park, Colorado At Mesa Verde, you can see Native American cliff dwellings and impressive sedimentary rocks. Photo by R. Feldmann.	Spruce Tree House, Mesa Verde National Park The circular structures are kivas, used for religious and ceremonial purposes. Photo by R. Feldmann.

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Bryce Canyon National Park This bristlecone pine tree is over 1000 years old. Photo by R. Feldmann.	Chaco Culture National Historic Park The ruins of large pueblos, inhabited between AD 850 and1250, are preserved at this World Heritage site. Photo by R. Feldmann.
Everglades National Park The Everglades are a large, freshwater wetland that is home to hundreds of species of birds and other animals. Photo by R. Feldmann.	Pictured Rocks National Lakeshore, Michigan Miner's Castle, on the south shore of Lake Superior, is a result of wave erosion. Photo by C. Schweitzer.
Grand Canyon National Park, Arizona The Grand Canyon was carved by the Colorado River over the last 2 million or so years. Photo by R. Feldmann.	Grand Canyon National Park, Arizona The rocks at the top of the Canyon are approximately Cretaceous in age, while those at the bottom are Precambrian, which means that there is about 1 billion years of history in the rocks of the canyon. Photo by R. Feldmann.
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Grand Teton National Park, Wyoming The mountains in the background are the upthrusted fault block, and the bog in the foreground is on the down-dropped fault block. Photo by R. Feldmann.	Grand Teton National Park, Wyoming The Grand Tetons were formed by horst and graben block faulting and were later shaped by glaciers. Photo by R. Feldmann.
Ruby Beach, Olympic National Park, Washington Ruby beach includes a Rocky Intertidal Zone, featuring this starfish eating a crab and some sea anemones. Photo by C. Schweitzer.	Hoh Rain Forest, Olympic National Park, Washington Douglas Fir trees can grow quite large. Photo by C. Schweitzer.
Canyon de Chelly National Monument, Arizona The layers you see in this sandstone are crossbedding, remnants of the environment in which the rock formed. Photo by R. Feldmann.	Florissant Fossil Beds National Monument, Colorado This stump of a relative of Redwood trees was petrified by volcanic ash that fell in this area about 35 million years ago. Photo by R. Feldmann.
Badlands National Park, South Dakota The South Dakota badlands are composed of sedimentary rocks that have been weathered into fantastic rock formations by rain water. Photo by N. Saraceno.	Badlands National Park, South Dakota Many Oligocene mammal fossils have been collected from the Badlands in South Dakota. Each year, digs are conducted to collect these important finds. Photo by N. Saraceno.

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