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赣南-粤西地区的地壳自早元古代晚期开始形成,地壳成熟度较低。该区是我国华南重要的W、Sn、Nb、Ta等矿的重要产地,与中生代岩浆活动有关。成矿的岩浆杂岩具有高硅、富铝、富钾、高F/C1和Rb/Sr值,稀土配分具“海鸥型”模式,以及高Isr、b18O值和低εNd值的同位素特征,岩石成因属S型系列。矿石铅和长石铅同位素组成相似,反映成矿物质与成岩物质的原区相同,都由地壳物质衍生为主。矿床的形成与地壳演化历史,岩浆成因和岩浆源区物质组成等深部地质作用有关。
The crust in southern Jiangxi and western Guangdong began to form in the early Early Proterozoic, with low crustal maturity. This area is an important origin of W, Sn, Nb, Ta and other mines in southern China, which is related to Mesozoic magmatism. The mineralized magmatic complexes have high silicon, aluminum-rich, potassium-rich, high F / Cl and Rb / Sr values, REE with “seagull” patterns and isotopic characteristics of high Isr, b18O and low εNd values. Genesis is a S-series. Ore lead and feldspar lead isotopic composition similar to the reflection of mineralization and diagenetic material in the same area, are mainly derived from the crustal material. The formation of the deposit is related to the history of the crustal evolution, the magmatic origin and the material composition of the magma source zone.