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Atokan

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Atokan [ə′tō·kən]
(geology)
A North American provincial series in lower Middle Pennsylvanian geologic time, above Morrowan, below Desmoinesian.


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Their topics include Lower Cambrian shelled phosphorites from the northern Montaigne Noire in France, Siluro-Devonian alpine reefs and pavements, a late Atokan regional encrinite in the Sierra Agua Verde in northwestern Mexico, and whether the distribution of tabulae in tabulates can be used to estimate palaeo-environmental changes.
The second well will target typical Arkoma Basin Atokan objectives at depths between 7000' and 10,000'.
 
 
 
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