Geophysical log documentation of fluid migration from compacting shales; a mineralization model from the Devonian strata of the Pine Point area, Canada

Abstract

Evaluation of sonic logs in the Mackenzie Basin indicates that a substantial volume of water could have been generated by late-stage shale compaction. This derivation of metal-rich formation water is compatible with mineralization features of the reefal carbonate-hosted Pb-Zn sulfide deposits of the Pine Point District. Expelled fluids migrated within linear conduits is suggested, a feature that could have regional exploration significance.--Modified journal abstract.