Evolution of the Qianlishan Granite Stock and its Relation to the Shizhuyuan Polymetallic Tungsten Deposit
Evolution of the Qianlishan Granite Stock and its Relation to the Shizhuyuan Polymetallic Tungsten Deposit
复制标题
DOI：
10.1080/00206819509465393
复制
发表时间：
1995
影响因子：
2.6
通讯作者：
Jingwen Mao;Hongyan Li
中科院分区：
文献类型：
--
作者：
Jingwen Mao;Hongyan Li
千里山花岗岩体由三种过铝质花岗岩组成，按侵入顺序为假斑状黑云母花岗岩、等粒黑云母花岗岩和花岗斑岩脉岩。前两类花岗岩与花岗斑岩在岩石化学上没有明显的演化关系。从假斑状黑云母花岗岩到等粒黑云母花岗岩，分异程度增强，基性元素减少，Zr/Hf、La/Yb比值降低，Eu亏损增强，酸不相容元素、挥发分、成矿元素、Rb/Sr、U/Th比值增加。前两期花岗质侵入体与多金属钨矿化有关。花岗斑岩的分异程度较两个早期花岗质岩石低，Rb/Sr和U/Th比值较低，Zr/Hf和La/Yb比值较高，Eu亏损较弱。花岗斑岩与铅、锌、银矿共生。
The Qianlishan granite stock consists of three peraluminous granites; in order of intrusion they are pseudoporphyritic biotite granite, equigranular biotite granite, and dikes of granite porphyry. There is no obvious evolutionary relationship in petrochemistry between the first two granitoids and the granite porphyry. From pseudoporphyritic biotite granite to equigranular biotite granite, the differentiation degree increases so that the basic elements and the Zr/Hf and La/Yb ratios decrease, Eu depletion is stronger, and acid-incompatible elements, volatile components, ore-forming elements, and Rb/Sr and U/Th ratios increase. The first two phases of granitic intrusions are associated with polymetallic tungsten mineralization. The differentiation degree of the granite porphyry is lower than that of the two early granitic rocks, and so are its Rb/Sr and U/Th ratios; Zr/Hf and La/Yb ratios, however, are higher, and Eu depletion becomes weaker. The granite porphyry is associated with lead, zinc, and silver mi...