Researchers baffled by mysterious melting of Earth’s crust beneath western North America

(Natural News) The melting of Earth’s crust beneath a vast expanse of western North America is baffling researchers due to its unusual location inland. Crustal melting, which plays an important role in the formation of igneous rocks, typically occurs near plate boundaries. But a 2,000-mile belt of igneous rocks that sits far from the edge of the North…  » READ MORE