Mountain building, also known as orogenesis, is a geological process that involves the formation and uplift of large, elevated landforms, known as mountains. The term "orogenesis" comes from Greek ...

An odd-looking cloud formation over Mount Rainier drew curious eyes from social media users Wednesday as the volcano looked as if it was giving a warning before some sort of event, but experts quickly ...

The Olympus Mons volcano on Mars shares morphological similarities with active volcanic islands on Earth, suggesting that it formed when a vast ocean once occupied the planet's northern lowlands. A ...

Mount Shasta presents a unique challenge that most other active volcanoes don't for USGS scientists. The only place to sample is near the summit of the active volcano located above 14,000-feet, ...

A large formation of granite discovered below the lunar surface likely was formed from the cooling of molten lava that fed a volcano or volcanoes that erupted early in the Moon's history -- as long as ...

A 2,500 km long line of volcanoes, with 80 volcanic mountains and 41 historically active (since 1760 AD) volcanoes produce an arc stretching along the southern edge of the Bering Sea and onto the ...

NEAR MT. RAINIER, Wash. — Once again, some persuasive pictures of Mount Rainier have led a few to wonder if the volcano was beginning to erupt earlier this month. Spoiler alert: no, Mount Rainier was ...

A volcano is an opening in the Earth's crust that allows molten rock, gases, and debris to escape from below the surface. The ...

Poços de Caldas, in the southern part of the state of Minas Gerais, Brazil, is built on one of the most unique geological ...