Boulder, CO, USA - This new field-trip guide from The Geological Society of America takes readers on a six-day, west-to-east geologic journey across the Mesozoic magmatic arc of the central Sierra ...

Earth's crust once formed a dense "root" supporting Colombia's northern Sierra Nevada de Santa Marta mountains, but new research suggests this prop sank into the mantle millions of years ago. When you ...

Geology, wilderness, wildlife, seasonal weather and vivid memories may come to mind when thinking about the Sierra Nevada mountain range. There are plenty of opportunities for outdoor enthusiasts to ...

When geologist Elizabeth Miller started mapping a fault system in Death Valley, she questioned the origin of some sedimentary rocks previously assumed to be locally derived. Now, analysis has revealed ...

The Sierra Nevada dates back approximately 40 million years, according to a Stanford study. It took all those years for water to form marvelous canyons, and they offer some of the best hiking on the ...

Parts of western U.S. were once covered in thousands of feet of lava from dozens of Yellowstone-size supervolcanoes that erupted between 40 and 20 million years ago, scientists have said. These ...

(CNN) — Seismologist Deborah Kilb was wading through California earthquake records from the past four decades when she noticed something odd — a series of deep earthquakes that had occurred under the ...

With over 56,000 votes cast, the W.M. Keck Earth Science and Mineral Engineering Museum was voted third best museum in the Sierra Nevada. The “Best of Sierra Nevada” competition is in its second year.