Once covered in swamps and deltas of the Western Interior Seaway, the area was filled with sediments and organic materials in prehistoric times. At some point, a volcanic eruption blanketed ...

The controlling mechanisms for the accumulation and preservation of organic matter in residual bay environments during the transition from marine to continental settings are not well understood, ...

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Abstract Fascinating circular hydrothermal bowls 0.5 m in diameter occur in paleodunes of the 1.2 million km 2 Botucatu paleoerg in the Fronteira Oeste of Brazil, Rio Grande do Sul, and were exposed ...

Most maps copyrighted by Rand, McNally & Co. Settlement regulations on back cover. The British edition was apparently identical. Also published as, Canada. Department of the Interior, The last best ...

PERTH, Australia--(BUSINESS WIRE)-- Rio Tinto has officially opened its newest iron ore mine, Western Range, with Western Australian Premier Roger Cook and Federal Resources Minister Madeleine King ...