The Permian Phosphoria Formation and associated rocks are a major source of phosphate and are important petroleum source and reservoir rocks in the western United States. This volume contains 22 papers that summarize the state of understanding of the Phosphoria Formation that, due to its importance as a primary source of economic phosphate, focus on the Meade Peak member. The Phosphoria Formation, however, is not only comprised of the phosphate and organic matter-rich Meade Peak member, but also includes the spiculitic Rex Chert, the organic matter- and phosphate-rich Retort, and the silty and spiculitic Tosi Chert members. These rock units...

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