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This thesis by Jeffrey Scott Loen reinterprets the origin of gold placers in the Pioneer district of Powell County, Montana, suggesting that the oldest placers are found in Tertiary conglomerates rather than being solely the result of glacial deposition. The study indicates that gold was released from late Cretaceous metal veins during Oligocene and early Miocene weathering, with subsequent geological events contributing to the formation of rich placers. The research also provides detailed geological mappin

Author

Bo Ro

Language

EN