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Home > Colorado Geology > Metamorphic Rocks > Preserved Original Features
Preserved Original Features 
 
Commonly the original features occurring in rocks are completely altered or destroyed by the recrystallization and/or deformation of the metamorphic process.  However, there are places in Colorado where the original feaures can be discerned, even in high-grade metamorphic rocks.

Pictured below from left to right: Pebbles preserved in metamorphosed conglomerate, preserved cross bedding in a metamorphosed sandstone, pebbles preserved in metamorphosed conglomerate

Pebbles preserved in metamorphosed conglomerate near the mouth of Coal Creek Canyon. Preserved cross bedding in a metamorphosed sandstone in the San Juan Mountains in the vicinity of Vallecito Lake. Pebbles preserved in metamorphosed conglomerate in the San Juan Mountains. Photo: D. Gonzales

Preserved pillow shapes in metamorphosed basalt in the San Juan Mountains. Photo: D. Gonzales Preserved fragments in a metamorphosed lapilli tuff. Photo: D. Gonzales
Pictured above, from left to right: Preserved pillow shapes in metamorphosed basalt,  and preserved fragments in a metamorphosed lapilli tuff.
Last Updated: 5/5/2011 11:29 AM 
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