Bookends
Core rock Bookends, From the San Andres and Clear Fork Formation
Core Rock Bookends Ellenburger Formation 450 million years old
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Core Rock Bookends from the San Andres Formation 4,000 feet below the surface and 230 million years old.
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Core Rock Bookends Cisco Formation 9,000 Ft. Below Surface
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Core Rock Bookends Cisco Formation 9,000 Ft. Below Surface
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Core Rock Bookends Cisco Formation 9,000 Ft. Below Surface
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