Category Archives: Sedimentology

Classic papers in Economic Geology: Fallick et al. (2001) – Bacteria were responsible for the magnitude of the world-class hydrothermal base metal base metal sulfide deposit at Navan, Ireland

Irish-type zinc-lead deposits represent a distinctive sub-class of the carbonate-hosted zinc-lead deposit family, having geological features and genetic models that are hybrids between sedimentary exhalative (SEDEX; also known as clastic zinc-lead deposits) and Mississippi Valley-type (MVT) deposits.  They are important … Continue reading

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Posted in Bacteria, Biogeochemistry, Carbonate-hosted deposits, Classic Papers, Economic Geology, Geochemistry, Geology, Geophysics, Ireland, Irish-type deposits, Lead, Mineral Resources, Seafloor, Seafloor Massive Sulfides, Sedimentary exhalative deposits, Sedimentology, Stable Isotopes, Zinc | Tagged , , , , , , , , , , , , , | Leave a comment

Sedimentary origin of gold and uranium in the Archean Witwatersrand Supergroup, South Africa

New research by Depiné et al. published in Mineralium Deposita provides critical evidence to the origin of gold and uranium in the Archean Witwatersrand Supergroup in South Africa. The Witwaterstrand Basin in South Africa accounts for 40% of the world’s gold … Continue reading

Posted in Archean, Economic Geology, Geochemistry, Geology, Gold, Gold Deposits, Mineral Resources, Paleoplacer, Sedimentology, Uranium | Leave a comment