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Geochemical studies of the Paiting and Miaolong Carlin-type gold deposits in the Sandu-Danzhai metallogenic zone,Guizhou Province,have shown that the mineralized-altered rocks show LREE-enrichment patterns,generally displaying negative Eu anomalies (δEu=0.51-0.97) and unobvious negative Ce anomalies (δCe=0.86-0.99).Calcite and fluorite in relation with metallogenesis show MREE-enrichment patterns,generally displaying rather weak negative Eu anomalies (δEu=0.74-0.93) and weak negative Ce (δCe=0.70-0.98) anomalies.The δ13CPDB values of carbon in calcite are-1.61‰--5.82‰,the δ18OSMOW values of oxygen are 13.97‰-19.24‰,and the δ34SCDTvalues of sulfur in stibnite are 17.72‰-21.68‰.In regard to δD and δ18O,ore-forming fluids possess the characteristics of metamorphic water.The process of metallogenesis of the Carlin-type gold deposits is controlled by the Yanshanian tectonic activities.The Yanshanian movement promoted the migration and mobilization of metamorphic fluids in the extensively developed medium-to high-grade metamorphic rocks in this region,carrying primarily enriched gold and associated elements such as Hg,As,and Sb in the Sinian metamorphosed black shales and Lower Cambrian black shales.The ore-forming fluids found their way into a suitable metallogenic environment along the fault zone,followed by gold precipitation to form gold deposits.