and early mammal relatives provide a unique window into the biodiversity of the period in geologic history when the first dinosaurs appeared on the scene. The Petrified Forest is named for its ...

who prospered as a guide for souvenir- hunting parties bound into remote parts of the Petrified Forest.) By 1899 a U.S. Geological Survey report declared that if something wasn't done about the ...

Nestled in the ancient St. Francois Mountains of southeastern Missouri, Elephant Rocks State Park offers visitors a chance to ...

Shortly after dawn, we had parked on the Desert View Drive and set off through the ponderosa forest toward the ... chasm lays bare no fewer than 15 geological layers, ranging from the rim-top ...

The story involves an inland sea, powerful rivers, the shearing of the Earth’s crust along major fault systems, magmatic intrusions and volcanic eruptions.

The civilization was known for sophisticated urban centers, ceremonial platforms, cliffside burial structures, and ...

The Cambrian-age Tonto Group is a set of rocks famous for holding clues to the burst of new life that reshaped Earth 500 ...

Bountiful remains of foraminifera reveal how organisms responded to climate disturbances of the past. They can help predict the future, too.

The tariffs wars involving global economic powerhouses such as the U.S. and China are being felt even in such distinctly ...

The Kerr-McGee Corp. discovered an igneous sill (intrusive rock formation) full of oil in 1967 on a large anticline (a geologic fold ... from Devonian strata (a layer of sedimentary rock dating ...