FratFiles

• Save Paper

Volcanism exists all over the world. From the freezing lands of Alaska to the mountains of South America, volcanism continues to help shape the land in which we live in. Our origins lie in volcanic activity which took place billions of years ago as the Earth was still forming. To this day, it continues in areas where plate tectonics meet in a convergent zone and through subduction, allow magma to reach the surface. In other areas, volcanism occurs after a plate has moved. The United States in noteworthy in that it had significant volcanism in its past that transcends into the present and will continue to do so in its future.
What exactly is volcanism? Volcanism, according to "Physical Geology," is "volcanic activity, including the eruption of lava and rock fragments and gas explosions" (3). The structures most associated with volcanism are volcanoes, which are "a hill or mountain constructed by the extrusion of lava or rock fragments from a vent" (3). In the United States,......

View the rest of this paper...

Approximate Word Count: 1467
Approximate Pages: 6 (250 words per double-spaced page)

Similar Essays

1. Origin And Occurrence Of Volcanism In The Usa
   

   Origin and Occurrence of Volcanism in the USA. Volcanism exists all over the
   world. From the freezing lands of Alaska to the mountains ...