Sunday, April 14, 2019

Morgan Florence- Converging Plates


Hawaii, Kona/Hilo - Hotspot
Oceanic plates are denser than continental plates, which means they have a higher subduction potential. They are constantly being pulled into the mantle, where they are melted and recycled into new magma. “The oldest oceanic plates are also the coldest, as they have moved away from heat sources such as divergent boundaries and hot spots. This makes them denser and more likely to subduct”. When oceanic and continental plates collide, the oceanic plate undergoes subduction and volcanic arcs arise on land. Middle of Pacific plate, the drift of islands lessens the chance of a volcano becoming active due to the loss of magma access. Thrust faults are prominent and considered normal in the Pacific, additionally basaltic sediment is present.

New lava flow over roadLava Flow
Glassy surface of new pahoehoe


No comments:

Post a Comment