EESA01H3 Lecture Notes - Lecture 5: Dead Sea Transform, East Pacific Rise, North American Plate
Document Summary
Dead sea and death valley are below sea level. Dead sea rift- 420 m below sea rift. Ancient roman city of hippos destroyed ad 749. Catastrophism: earthquakes and other disasters dictate earth history. Passive margin: not large earthquakes- important for storage of natural resources active. East pacific rise is the fastest spreading mid-ocean ridge. In the middle of canada, we can find huge areas that were once in the middle of oceans death of oceans instead of moving apart moved together. Oceanic crust is pushed up on land newfoundland is oceanic crust from an ancient ocean. Iceland has a spreading center and an icelandic plume right under. Two boundaries in iceland between eurasian and north american plate. 65 million years ago, europe was still joined to north america. Ridge jump: spreading center moves away from the plume. (iceland is moving to the west. ) Volcanoes cause smoke, ash, magma, and sulphur dioxide. Continuous flood basalt eruptions from fissures causes oceanic crust.
