Types, Metallogenic Environments and Characteristics of Temporal and Spatial Distribution of Copper Deposits in China
Types, Metallogenic Environments and Characteristics of Temporal and Spatial Distribution of Copper Deposits in China
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DOI：
10.1111/j.1755-6724.1989.mp2001007.x
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发表时间：
2009-05
影响因子：
3.3
通讯作者：
Wang Zhitian;Qin Kezhang
中科院分区：
文献类型：
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作者：
Wang Zhitian;Qin Kezhang
本文在对中国地区12 3个铜矿床进行综合研究的基础上，得出以下结论：1.中国地区的地壳固化较晚，随着板块的隆升，铜矿化在空间上向边缘移动，年龄逐渐年轻化；2.世界上已发现的主要铜矿类型大多在中国，其中斑岩型铜矿最为重要，海相碎屑岩与碳酸盐岩过渡层中的块状硫化物类型得到了明确的界定。3.中国地区碳酸盐岩地层分布广泛，沉积时间较长，与世界其他地区相比，产出铜矿床比例较大。4.可识别出7个成矿期，以中生代为主，其次为中(晚)古生代和新生代。成矿作用在早期较为简单，后来变得多样化。早期与玄武岩岩浆作用和变质海相沉积有关的铜矿床占主导地位，晚期则主要与玄武岩岩浆作用和变质海相沉积有关。与花岗岩有关的岩浆作用和大陆沉积作用为主。5.中国地区有13个成矿省，其中以下扬子断陷带、三江褶皱系、江南轴和西康-云南轴意义较大。6.中国的地壳活动性比较明显，地壳的多旋回演化导致了矿化继承、多种类型共存、不同成因类型叠加等明显现象。
Abstract Based upon a comprehensive study of 123 copper deposits in China, this paper reaches the following conclusions: 1. The crust in China was solidified pretty late; with the accretion of the plate, the copper mineralization moved towards its margin in space and became successively younger in age. 2. The major copper ore types ever found in the world have mostly been discovered in China, in which the porphyry type seems to be the most important and the massive sulfide type in the transitional bed between marine clastic and carbonate rocks is clearly defined. 3. Carbonate strata are widespread in China and their deposition lasted for a long geological period, so the proportion of copper deposits occurring in them is large as compared with other parts of the world. 4. Seven metallogenic epochs can be recognized, in which the Mesozoic one plays the leading role and the middle (late) Palaeozoic and Cenozoic ones are next in importance. Mineralization was comparatively simple in the early geological period, and became diversified later on. In the early epochs copper deposits related to basaltic magmatism and metamorphosed marine sediments predominated, whereas in the later epochs those. related to granitic magmatism and continental sedimentation were dominant. 5. There exist in China thirteen metallogenic provinces, of which the Lower Yangtze downwarping belt, Sanjiang fold system, Jiangnan axis and Xikang- Yunnan axis are of greater significance. 6. The crustal mobility in China was rather pronounced, the polycyclic evolution of the crust has resulted in such obvious phenomena as the inheritance of mineralization, the coexistence of various types and the superposition of different genetic types.