STS-080 Earth Sciences and Image Analysis Photographic Highlights

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STS080-704-22
photo ID STS080-704-22
STS080-704-22         Click the photo number to access all resolutions available and the database record.
Nuevo Leon, Mexico: Sierra Madre Oriental (near Monterey) formed about 60 million years ago, when one of the crustal plates of the Pacific collided with what is now western Mexico. Beneath the massive limestone layers, which are now buckled up into the ridges of the Sierra, were thick layers of rock salt and other evaporite minerals. Salt behaves plastically when even minor stress is applied; here it has allowed the overlying slabs of rigid rock to rumple like a rug and has flowed into the cores of the steep-sided ranges.

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