Entries by Daphne Hanson

The basalt lava extruded at mid-ocean ridges and along rifts

What causes the melting that provides the basalt lava extruded at mid-ocean ridges and along rifts?  A. Circulation of superheated oceanic water travels through the subsurface, melting the surrounding crust. B. Melting is due to hot mantle rock rising to shallow depths beneath the ridge, which subsequently undergoes decompression melting. C. Melting is the result […]