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→Proposed new introduction: new section
[[User:Philip J. Rayment|Philip J. Rayment]] 22:16, 4 January 2008 (EST)
[[User:Philip J. Rayment|Philip J. Rayment]] 22:16, 4 January 2008 (EST)
== Proposed new introduction ==
I have written a slightly longer introduction for this article. It's a small edit, but I hope a step in the right direction. If no one disapproves, I'll make the edit and add some sources:
:Plate tectonics describes the slow movement and reconfiguration of the Earth's crust. The crust itself is broken up into numerous tectonic plates which float above the mantle and push and grind against one another. The major plates -- the African, Antarctic, Australian, Indian, Eurasian, North American, South American, and Pacific -- are the largest, and their movement generally dominates the process. Plate tectonics is the cause of mountain formation as well as earthquakes, while another obvious sign of the process is vulcanism, most notably the Ring of Fire and the Hawaiian Islands. Over many hundreds of millions years, the movement of the tectonic plates has continually rearranged the continents, and at it is theorized that at several times in the past they combined to form much larger landmasses. The most recent of these supercontinents was Pangea, which existed about 250 million years ago.
Thanks. --[[User:SStaples|SStaples]] 00:15, 6 March 2009 (EST)