Constraints on the timing and genetic link of the large-scale accumulation of proximal W–Sn–Mo–Bi and distal Pb–Zn–Ag mineralization of the world-class Dongpo orefield, Nanling Range, South China
Constraints on the timing and genetic link of the large-scale accumulation of proximal W–Sn–Mo–Bi and distal Pb–Zn–Ag mineralization of the world-class Dongpo orefield, Nanling Range, South China
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南岭东坡世界级矿田近端W—Sn—Mo—Bi和远端Pb—Zn—Ag矿化大规模堆积的时代和成因制约
DOI：
10.1016/j.oregeorev.2017.12.005
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发表时间：
2017-12
影响因子：
3.3
通讯作者：
Yan Shuang
中科院分区：
文献类型：
--
作者：
Panlao Zhao;Shunda Yuan;Jingwen Mao;Yabin Yuan;Haijie Zhao;Dongliang Zhang;Yan Shuang
东坡矿田位于南岭山脉，是我国著名的世界级钨锡钼铋铅锌银矿田，其中包括柿竹园钨锡钼铋、金川塘锡铋、野鸡尾锡铜、丛树坂铅锌银矿等大型矿床。千里山岩体周围多金属矿化具有系统的分带性，近端为W-Sn-Mo-Bi矽卡岩云英岩脉，远端为Pb-Zn-Ag脉。但其近源矽卡岩云英岩型W-Sn-Mo-Bi矿化和远源脉型Pb-Zn-Ag矿化的形成时间和成因联系尚不明确。本文以系统的年代学资料为依据，对东坡大矿田的年代学格架和成因模式进行了界定。柿竹园钨锡钼铋存款矿床云英岩型矿石的白云母40 Ar-39 Ar年龄为151 ± 1 Ma，与矽卡岩型矿石和千里山岩体的形成时间一致，表明二者在成因上有一定的相关性，且形成于151 ± 1 Ma。柿竹园存款矿床中钨锡钼铋的大规模聚集可能发生在10.1 Ma的短时间内。白云母40 Ar-39 Ar年龄（155.5 ± 1.1和156.8 ± 1.1Ma）和辉橄榄岩Re-Os年龄（153.8 ± 4.2）Ma），以及锆石U-Pb年龄东坡矿田野鸡尾锡铜存款年龄为152.7 ± 0.9 Ma，与千里山岩体的年龄一致，表明东坡矿田近源矽卡岩云英岩型钨锡钼铋矿化与千里山岩体有成因联系。此外，闪锌矿Rb-Sr定年表明丛树坂地区脉状铅锌银矿化形成于152 ± 2 Ma，与等粒黑云母花岗岩的LA-MC-ICP-MS锆石U-Pb年龄（156-155 Ma）一致，表明远脉状铅锌银矿化与千里山等粒黑云母花岗岩有成因联系。通过将本研究的高精度地质年代学数据与以往研究的数据相结合，东坡矿田W-Sn-Mo-Bi-Pb-Zn-Ag大规模聚集的新成因模式表明，近源矽卡岩云英岩W-Sn-Mo-Bi和远源脉状Pb-Zn-Ag是成矿物质来源。东坡矿田银矿化与千里山岩体有成因联系，矿化类型主要受墙岩。
The world-class Dongpo orefield, located in the Nanling Range, South China, is famous for its large-scale accumulation of W–Sn–Mo–Bi–Pb–Zn–Ag deposits, which includes the giant Shizhuyuan W-Sn-Mo-Bi, Jinchuantang Sn-Bi, Yejiwei Sn-Cu and Congshuban Pb-Zn-Ag deposits. The polymetallic mineralization around the Qianlishan pluton exhibits systematic zoning and comprises proximal W–Sn–Mo–Bi skarn-greisen and distal Pb–Zn–Ag veins. However, the timing and genetic link of its proximal skarn-greisen W–Sn–Mo–Bi and distal vein-type Pb–Zn–Ag mineralization are not well constrained. Here, we present systematic geochronological data to constrain the geochronological framework and genetic model of the giant Dongpo orefield. The muscovite40Ar–39Ar age of the greisen-type ore in the Shizhuyuan W–Sn–Mo–Bi deposit is 151 ± 1 Ma, which is consistent with the formation of the skarn-type ore and the Qianlishan pluton, thus indicating that they are genetically related and both formed contemporaneously at ∼151 Ma. The large-scale accumulation of W–Sn–Mo–Bi in the Shizhuyuan deposit may have occurred in a short duration of ∼1 Ma. The muscovite40Ar–39Ar ages (155.5 ± 1.1 and 156.8 ± 1.1 Ma) and molybdenite Re–Os age (153.8 ± 4.2 Ma) of the Ma’naoshan W–Sn–Fe–Mn–Pb–Zn deposit, as well as the zircon U–Pb age (152.7 ± 0.9 Ma) of the Yejiwei Sn–Cu deposit in the Dongpo orefield, are consistent with the age of the Qianlishan pluton, thus indicating that the proximal skarn-greisen W–Sn–Mo–Bi mineralization in the Dongpo orefield is genetically related to the Qianlishan pluton. In addition, the Rb–Sr dating of sphalerite indicates that the vein-type Pb–Zn–Ag mineralization in the Congshuban area formed at 152 ± 2 Ma, which is consistent with the LA–MC–ICP–MS zircon U–Pb age (156–155 Ma) of the equigranular biotite granite, indicating that the distal vein-type Pb–Zn–Ag mineralization is genetically associated with the Qianlishan equigranular biotite granite. By integrating the high-precision geochronological data of this study with those of previous studies, the new genetic model of the large-scale accumulation of W–Sn–Mo–Bi–Pb–Zn–Ag in the Dongpo orefield suggests that the proximal skarn-greisen W–Sn–Mo–Bi and distal vein Pb–Zn–Ag mineralization in the Dongpo orefield are genetically related to the Qianlishan pluton and that the mineralization type is mainly controlled by the characteristics of the wall rock.
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影响因子：
5.8
作者：
N. McNaughton;P. Pollard;D. Groves;R. Taylor
通讯作者：
N. McNaughton;P. Pollard;D. Groves;R. Taylor
影响因子：
5.3
作者：
STEIGER, RH;JAGER, E
通讯作者：
JAGER, E
DOI：
10.2113/gsecongeo.92.7-8.766
发表时间：
1997-11-01
期刊：
ECONOMIC GEOLOGY AND THE BULLETIN OF THE SOCIETY OF ECONOMIC GEOLOGISTS
影响因子：
--
作者：
Cathles, LM;Erendi, AHJ;Barrie, T
通讯作者：
Barrie, T
DOI：
10.1007/s11631-008-0342-5
发表时间：
2008-11
期刊：
Chinese Journal of Geochemistry
影响因子：
--
作者：
Shunda Yuan;Jian‐tang Peng;R. Hu;X. Bi;L. Qi;Zhao-li Li;Xiaomin Li;Shuang Yan
通讯作者：
Shunda Yuan;Jian‐tang Peng;R. Hu;X. Bi;L. Qi;Zhao-li Li;Xiaomin Li;Shuang Yan
南岭钨锡成矿区晚白垩世锡成矿事件——湖南界牌岭锡铍氟矿床U-Pb、Ar-Ar年代学的制约
影响因子：
3.3
作者：
Nigel J. Cook;Wang Xudong;Liu Xiaofei;Yuan Yabin
通讯作者：
Yuan Yabin