NATS 1570 Lecture Notes - Lecture 16: San Andreas Fault, Cinder Cone, Indian Plate

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Plates may also be moving in opposite directions to each other. Sometimes called conservative boundaries since either rock is. Transform faults often also a link between spreading zones and subduction zones facilitate the subduction of rock. Generally under water in oceanic basins, but san andreas fault above ground. Becomes liquid under the surface, rising and erupting as lava (often very forcefully) at the surface. The mechanism tha produces the magma and the local geology where the mama exit the crust . All volcanoes have some common fetures that are basic. Magma escaps through cracks and fissures in the crust. A major feature of volcanoes are calderas. Most relating to collapse of the summit. At their peak, many volcanoes also have craters or smaller calderas(1km in diameter or more) If volacanoes erupt energetically they will also throw ash, dust and pieces. This magma rises through the crust and will erupt.

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