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, and 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. GonzalesPreserved pillow shapes in metamorphosed basalt in the San Juan Mountains. Photo: D. GonzalesPreserved 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.