Mod+3+-+Kiersten+H

Dynamic Earth
There are three plate boundaries, divergent boundary, convergent boundary and transform boundary.

====Divergent boundaries is in the oceans, magma from deep in Earth's mantle rises to the surface, and pushes apart two or more plates. Then mountains and volcanoes rise. On land if the plates continue to be tugged apart eastern Africa will split and form a new land mass. Some examples of the causes of divergent boundaries is the mid- atlantic ridge. The lithospheric plates was pushed away from each other forming the mid- atlantic ridge. It extends from the Arctic ocean to the southern tip of Africa. A volcano formed by a divergent boundary is the Krafla volcano located in the northeastern part of Iceland. From 1975 to 1984 there were many episodes of rifting that took place along the Krafla fissure zone.====

====Convergent boundaries is when two plates collide, the crust crumbles and turns into mountain ranges. 55 million years ago India and Asia collided and formed the Himalaya, the highest mountain chain on Earth.Another example would be when the Nazca plate and the South American plate collided to form the Andies mountain chain. The Andies is the worlds longest exposed mountain range. Also the collision of the Eurasian Plate and the African plate formed the Pontic Mountains in Turkey. The highest point of the Pontic Mountain is 12,930 feet tall.====

====Transform boundaries is when two plates grin past each other. the San Andrea Fault in California is an example of a transform boundary, transform boundarys can't make features like mountains, but the motion often triggers earthquakes, like in 1906 in San Francisco. An example of an transform boundary is North America's queen charlotte falt. Queen charlotte falt is Canad's verision of the San Andreas falt. Another example is Turkey's North Anatolian fault. It is an active right lateral- moving Geologic fault.====