Dynamic processes of ore-forming fluid and the localization of orebody: case study on the sediment-hosted gold deposits of southwestern Guizhou, China

摘要

Over 100 sediment-hosted gold deposits and occurrences of southwestern Guizhou lie near the southern edge of the Yangtze craton, which is composed of crystalline rocks of Proterozoic age, overlain mainly by Paleozoic and Lower to Middle Triassic shallow-marine platform and reef facies carbonates that grade southward and eastward into a thick section of interbedded siltstones and turbidite sandstones.