continental-continental


 * //Continental -Continental //**
 * Continental happens when two plates hit each other. An example of continental- continental is when India and Asia moved in to each other. The earth has changed about 600 million years ago and is still changing. "The Earth's unchanging size implies that the crust must be destroyed.” Continental does not happen often and when it does happen it takes a very long time. Continental- Continental is happening "off the coast of South America along the Peru-Chile trench. Thinking changed in the 1960's or so. Some evidence: Fossil records are similar between South America and Africa. Some types of rocks match between South America and Africa. There is a ridge in the mid-Atlantic. The favored theory now: the crust is divided into rigid plates the plates move (a few cm per year) the driving force is convection currents in the gooey mantle at plate boundaries there are several possibilities manufacture of new oceanic plate. Plates slide along each other continental plates crash into each other oceanic plate is sub ducted under a continental plate. **



To see a amazing video click on the text that says video, or click on the website below that has the words that say How stuff works.
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 * __ Questions __**

5.Does continental happen often?
References

How stuff works “** Mountains: Plate Tectonics **” [|http://videos.howstuffworks.com/hsw/27216- mountains-plate-tectonics-video.htmContinental-] ( [|Discovery Communications, LLC] ) 1998-2008 A Discovery Company 21/11/08

USGS “ // Continental-continental convergence”  // __ pubs.usgs.gov __ Jm Watson 5/5/99 USGS 21/11/08  http://pubs.usgs.gov/gip/dynamic/understanding.html

 Soper, Davison E. “Institute of Theoretical Science” __Uoregon.edu__ (Soper) 2008 University of Oregon 21/11/08 soper@bovine.uoregon.edu 