Island arcs, which arise from volcanic activity along subduction zones where one tectonic plate dives beneath another, play a crucial role in the formation of the continental crust.

On Aug. 9, the HMNZS Canterbury ship observed the floating pumice "island" -- measuring 300 miles in length and more than 30 miles wide. The floating fluff apparently "lit up a brilliant white ...

Different plate tectonic settings produce distinctive basin environments where sedimentary rocks are deposited. Download a chart to use in class and an activity for practicing with these concepts: ...

Bringing a novel approach to a classic problem, researchers have revealed how changes in ocean chemistry over the past 2 billion years have left an imprint on volcanic rocks formed in island arcs ...