STS-109 Earth Sciences and Image Analysis Debriefing with Crewmembers April 9, 2002

GEOLOGY & GEOMORPHOLOGY

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STS109-728-31

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N. Argentina, Andes: Exceptional view of the rusty-looking volcanic High Andes and Altiplano; the long volcanic belt results from subduction of the Pacific oceanic plate beneath S. America. Toward the continent from the volcanic ranges are the narrow, thrust-faulted and folded ranges of the Precordillera, made up of ancient basement rocks and sedimentary strata almost identical to those of west-central Texas. This block of N. America became attached to S. America during a plate collision some 375 million years ago. The tremendous uplift of the Andes has brought these old rocks to the surface.

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