The Earp Formation

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A marker for the Earp Formation is the color contrast between the beds. As can be seen in this photo the rock varies significantly over a relatively short distance.
Another marker for the Earp Formation is this "*red-chert-pebble conglomerate that occurs only in the Earp formation in many localities"
Earp Formation
Earp Formation
*Source: Southern Arizona Guidebook Three available from the Arizona Geological Society.
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