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The Rockies are fifteen hundred kilometers, or one thousand
miles, to the east. The cause must be the tectonic plate that built these
mountains. Its name is Farallon. Farallon started off normally enough. It
plunged beneath the North American Plate at a forty-five degree angle. This
process sprouted volcanoes to form the Sierra Nevada in what is now California.
Next, mantle motions pulled North America westward over Farallon, and the plate
scraped along the bottom of the continent - for fifteen hundred kilometers. As
North America continued its westward trek, Farallon settled to the bottom of
the mantle.
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No cost
Please give credit to NASA GSFC Scientific Visualization Studio.
DLESE Catalog ID:
NASA-SVS-002410
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Related resources:
This resource has a thumbnail image at
'Farallon is now hidden deep inside the Earth'
Resource contact / Creator / Publisher:
Author:
Stuart A. Snodgrass NASA GSFC Scientific Visualization Studio
Principal Investigator:
Hans-Peter Bunge Princeton University |