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late devonian eastern n america iowa basin michigan illinois appalachian rheic ocean fluvial oxic sulfidic surface layer diagram deep watermass

October 14, 2012

late devonian eastern n america iowa basin michigan illinois appalachian rheic ocean fluvial oxic sulfidic surface layer diagram deep watermass

late devonian eastern n america iowa basin michigan illinois  appalachian rheic ocean  fluvial oxic sulfidic surface layer diagram deep watermass

 

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