Barrel Springs Formation
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93:. It dates as early Tertiary (Eocene to Oligocene).
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23:Geologic formation in Texas, United States
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16:For the formation in California, see
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115:National Geologic Map Database
111:"Geologic Unit: Barrel Spring"
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124:June 26,
55:Location
39:Tertiary
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
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