You and your Valentine will love this easy-to-hike trail along the Natchez Trace at Jeff Busby Park. Highlights include ...

From Grand Canyon to Petrified Forest to Saguaro National Park, here are the best things to do in Arizona's most beautiful places.

Layers of siltstone and shale are stacked ... Colors rage amid drifting cloud shadows and slanted sunlight. Cliffs of sandstone, limestone, shale and schist are streaked red and purple, orange ...

There are three main routes to consider: the Red City Route takes you around the city centre and Camps Bay; the Blue Mini ...

Shutterstock A Grand Canyon in Upstate New York In Upstate New York, you’ll find a natural wonder that matches the beauty of ...

Shale gas reservoirs significantly differ from conventional sandstone reservoirs in aspects such as rock ... we meticulously examine the attenuation dispersion effects at interfaces and within layers.

During the Paleogene period, the geological layers in this region comprise various ... of the Konger Formation primarily comprises gray-black to black shale with limited light gray silty sandstone ...