Stretching like a colossal spine along western South America, the Andes stand as the world's longest mountain range. It spans ...

A subduction zone near Cascadia is unraveling piece by piece. The process offers a rare glimpse into how tectonic plates die ...

Boulder, Colo., USA: GSA’s dynamic online journal, Geosphere, posts articles online regularly. Topics include Farallon plate subduction; 3-D digital outcrop scanning and modeling; and the Cerro Blanco ...

Residents of the US’s West Coast have long feared “The Big One” – the apparently inevitable massive earthquake that will one day hit where the Pacific tectonic plate meets its North American neighbor.

The mountain ranges of the North American Cordillera are made up of dozens of distinct crustal blocks. A new study clarifies their mode of origin and identifies a previously unknown oceanic plate that ...

It's time to redraw the map of the world during the reign of the dinosaurs, two scientists say. Picture the U.S. West Coast as a tortured tectonic boundary, similar to Australia and Southeast Asia ...

Scientists have discovered tectonic plates hidden deep within the Earth's mantle, which they say rewrite 40 years of history about the evolution of western North America. It has long been thought that ...

It's time to redraw the map of the world during the reign of the dinosaurs, two scientists say. Picture the U.S. West Coast as a torturous tectonic boundary, similar to Australia and Southeast Asia ...

The concurrent subduction of the Pacific and Atlantic plates resulted in the formation of a mantle plum and the ascent of magma. Credit: Nicolas Riel Earthquakes and volcanism occur as a result of ...

The building of western North America wasn’t a simple construction job. Multiple sections of seafloor slid beneath the continent and each other like conveyor belts, researchers suggest, bringing ...