Travels in the American Southwest

The Great Unconformity

Light Precambrian granite and schist on the right; Darker Cambrian rock on the left.
Where they meet - 1,200,000,000 years of geological history is missing.
 

What this informative sign once said is unknown today - Vandals have destroyed it.
 


 

Sign at the begining of the interpretive trail - Senselessly destroyed
 

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