Scientists from the Woods Hole Oceanographic Institution (WHOI) have identified a new type of ocean ridge that is spreading so slowly that Earth's mantle is exposed over large regions of the sea floor ...

Off the southern coast of Chile, three tectonic plates meet at a point known as the Chile Triple Junction. Two are oceanic plates, the Nazca and the Antarctic, which are separating in an active ...

The global mid-ocean ridge, with a total length over 65,000 km, is the longest volcanic chain on Earth. Hot magmas are extracted from the upwelling asthenosphere beneath the ridge axis to produce ...

Many regard it as an extended rift basin where two continental plates are actively moving apart, while others see it as a fully developed ocean with a mid-ocean ridge and seafloor spreading.

Oceanography, Vol. 20, No. 1, SPECIAL ISSUE ON InterRidge (MARCH 2007), pp. 128-137 (10 pages) Baker, E.T., German, C.R., and H. Elderfield. 1995b. Hydrothermal ...