STS-108 Earth Sciences and Image Analysis Debriefing with Crewmembers
January 23, 2001

VOLCANOES AND MOUNTAIN BUILDING
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STS108-717-89
photo ID STS108-717-89
STS108-717-89         Click the photo number to access all resolutions available and the database record.
Mexico: Sierra Madre Oriental. The sweeping folds of the Sierra Madre Oriental, like those of the Anti-Atlas (STS108-711-25) formed when a gypsum-bearing sequence of rock layers was compressed as two tectonic plates collided about 60 million years ago. Gypsum is exposed in the core of the fold at Potrero Garcia, the triangular open fold north of Monterrey.

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