辽宁省成矿系列研究

根据与成矿有关的地质构造条件、岩浆作用、沉积作用和矿床本身的特征,将辽宁省矿床系列划分为4个系列组合、即与岩浆作用有关的成矿系列组合、与变质作用有关的成矿系列组合、与沉积作用有关的成矿系列组合、与地下热卤水成矿作用有关的成矿系列组合.在此基础上进一步划分出了17个成矿系列.辽宁省地壳演化经历了太古宙-古元古代基底形成、中元古代-中三叠世地台盖层发展、中三叠世以后地台活化等发展阶段.其中在基底形成阶段形成1、9、10、11、12成矿系列.在盖层发展阶段形成了2、4、14、15、16、17成矿系列.在地台活化阶段形成了3、5、6、7、8成矿系列.进入第四纪以来,形成了各种类型的冲积、洪积砂矿床,构成了第13成矿系列.

STUDY ON THE MINEROGENIC SERIES IN LIAONING PROVINCE

Based on the characteristics of structural conditions, magmatism a nd sedimentation that are related to minerogenesis, the mineral deposits in Liaoni ng Province are classified into four assemblages of minerogenic series, i.e. mag matism-related assemblage, metamorphism-related assemblage, sedimentation- related assemblage and hot geothermal brine-related assemblage. Further more, 17 minerogenic series are subdivided. The crustal evolution in Liaoning Province has undergone multiple stages, in which the basement was formed in Archeozoic- Paleoproterozoic Era, platform cover was developed in Mesoproterozoic-Middle Triassic, and platform was mobiled of after Middle Triassic. The Nos. 1, 9, 10, 11 and 12 minerogenetic series were formed in the basement-forming stage; the Nos. 2, 4, 14, 15, 16 and 17 in cover development stage; while the Nos. 3,5, 6, 7and 8 series in the platform mobilization stage. Kinds of alluvial and pluvial placers were formed in Quaternary as No.13 series.