Title

Origin and paleoenvironmental significance of calcite pseudomorphs after ikaite in the Oligocene Creede Formation, Colorado

Abstract

Pseudomorphs of calcite are present in the sedimentary moat fill of the Creede caldera in the Tertiary San Juan volcanic field. The extent of their exposure and degree of preservation in the Creede Formation allow elucidation of the depositional conditions in which the ikaite formed and was subsequently pseudomorphically replaced. The revised paleoenvironmental interpretation of the Creede Formation also has implications for understanding of the late Oligocene climate of the southwestern United States. -from Author

Publication Title

Journal of Sedimentary Research A: Sedimentary Petrology & Processes

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