North America Geologic History Revised In New 'Subduction Zone' Study

North America Geologic History Revised In New 'Subduction Zone' Study: 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 today. Erase the giant subduction zone researchers have long nestled against western North America. Drop a vast archipelago into the ancient Panthalassa Ocean, usually drawn as an empty void, the kind on which medieval mapmakers would have depicted fantastical beasts.

Deadly Quakes Inside Continental Plates : Discovery News#mkcpgn=rssnws1#mkcpgn=rssnws1#mkcpgn=rssnws1#mkcpgn=rssnws1#mkcpgn=rssnws1#mkcpgn=rssnws1

Deadly Quakes Inside Continental Plates : Discovery News#mkcpgn=rssnws1#mkcpgn=rssnws1#mkcpgn=rssnws1#mkcpgn=rssnws1#mkcpgn=rssnws1#mkcpgn=rssnws1: "Earthquake preparedness is high around seismically active tectonic plate boundaries, often saving many lives and structures.
Quake death rates within continental interiors are higher than that of continental plate boundaries.
Their faults are often very complex and slow-moving, sometimes taking thousands of years to rupture."