最終更新日：2022/12/24
The Stanley shale is too intricately folded to be of any petrolific importance in the Ouachita Mountains. The Stanley sandstone may contain gas at some places in the Arkansas Valley area […]
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The Stanley shale is too intricately folded to be of any petrolific importance in the Ouachita Mountains. The Stanley sandstone may contain gas at some places in the Arkansas Valley area […]
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