Striking landforms and broad vistas mark the Utah-Arizona border region of the Colorado Plateau.
Published Mar 25, 2013
Adjoining Galway Bay to the north, the Burren Plateau (Burren is Gaelic for “stony place”) is an example of karst terrain. Karst terrain is generally formed when sedimentary rocks are dissolved by groundwater. This astronaut photograph illustrates the northwestern-most portion of the Burren Plateau, which is characterized by the distinctive bare exposures of almost horizontal, layered Paleozoic-age limestone rocks that form Gleninagh Mountain.
Published May 5, 2008
Atop a mountain peak in eastern California, rare earth elements are concentrated around some complex geological features.
Published Jan 15, 2012
The risk of hazards around this active volcano are well known, but it does not deter people from enjoying skiing and mountaineering on this rugged “fourteener” peak.
Published May 20, 2018
In the northwest corner of Colorado, the west-flowing Yampa River meets the south-flowing Green River, which runs into Utah. Stretches of both river canyons upstream and downstream from the junction make up Dinosaur National Monument. The monument takes its name, of course, from the abundant fossils found in exposed valleys and low ridges of the Morrison Formation, a series of rock layers that were formed late in the Jurassic Period, roughly 145 million years ago.
Published Oct 1, 2007
Protection of a historic Civil War battle site brings a sliver of green space to metropolitan Atlanta.
Published Mar 30, 2016
Despite being quite close to each other, two mountain ridges in western Virginia have very different origins.
Published Mar 15, 2017
