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You are browsing the archive for 2 April 2012 - Mountain Beltway.

2 April 2012

Castner Marble

The Castner Marble is an extraordinary Mesoproterozoic limestone (later re-crystallized and metamorphosed) that exhibits some primary structures (both explicit and ambiguous) and some secondary (tectonic) overprints. It’s exposed in the Franklin Mountains of west Texas.

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