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采用Ｐｂ－Ｐｂ等时线法测定了昆阳群中亚群落雪组白云岩、黑山组碳质板岩和上亚群大营盘组碳质板岩样品，获得了（１７１６±５６）Ｍａ、（１６０７±１２８）Ｍａ和（１２５８±７０）Ｍａ的年龄，确定了昆阳群中亚群时代约为１６００—１８００Ｍａ，属晚古元古代，上亚群大营盘组约为１２００—１３００Ｍａ，属中元古代。还应用铅同位素化探技术系统研究了汤丹铜矿１号硐中段西１４穿脉岩石－矿石的铅同位素组成，结果表明铅同位素Ｖ１值与铜含量呈反相关系。这是运用系统剖面方法开展铅同位素化探的首次尝试。
The carbonaceous slate samples of dolomite, Montenegro carbonaceous slate and Dayingpan Dayingpan carbonaceous slate in the Kunyang Group were obtained by Pb-Pb isochronism method. The results showed that the carbonaceous slate samples were (1716 ± 56) Ma, ( 1607 ± 128) Ma and (1258 ± 70) Ma. The age of the subgroup in Kunyang Group was determined to be about 1600-1800Ma, belonging to the Late Paleoproterozoic and the Upper Ying Group in the Yingying Formation being about 1200-1300Ma Proterozoic. The Pb isotopic composition of rock and ore in the middle of No. 1 coal seam in the middle of No. 1 of Tongdan Copper Mine was also systematically studied by Pb isotope geochemical exploration technique. The results show that the lead isotopic value of V1 is inversely related to the copper content. This is the first attempt to lead isotope geochemical exploration using systematic profiling methods.