新疆延东斑岩铜矿床火山机构、容矿岩石及热液蚀变

申萍, 潘鸿迪, 董连慧, 杨俊弢, 沈远超, 代华五, 关维娜, 赵云江. 2012. 新疆延东斑岩铜矿床火山机构、容矿岩石及热液蚀变. 岩石学报, 28(7): 1966-1980.
引用本文: 申萍, 潘鸿迪, 董连慧, 杨俊弢, 沈远超, 代华五, 关维娜, 赵云江. 2012. 新疆延东斑岩铜矿床火山机构、容矿岩石及热液蚀变. 岩石学报, 28(7): 1966-1980.
SHEN Ping, PAN HongDi, DONG LianHui, YANG JunTao, SHEN YuanChao, DAI HuaWu, GUAN WeiNa, ZHAO YunJiang. 2012. Caldera complex, hosted rocks and alteration of the Yandong porphyry copper deposit in Eastern Tianshan, Xinjiang. Acta Petrologica Sinica, 28(7): 1966-1980.
Citation: SHEN Ping, PAN HongDi, DONG LianHui, YANG JunTao, SHEN YuanChao, DAI HuaWu, GUAN WeiNa, ZHAO YunJiang. 2012. Caldera complex, hosted rocks and alteration of the Yandong porphyry copper deposit in Eastern Tianshan, Xinjiang. Acta Petrologica Sinica, 28(7): 1966-1980.

新疆延东斑岩铜矿床火山机构、容矿岩石及热液蚀变

  • 基金项目:

    本文受中国科学院知识创新工程(KZCX2-EW-LY02)、国际科技交流与合作专项(2010DFB23390)、国家自然科学基金面上项目(40972064)和国家科技支撑计划(2011BAB06B01)联合资助.

详细信息
    作者简介:

    申萍,女,1964年生,博士,副研究员,从事矿床学的研究工作,E-mail: pshen@mail.iggcas.ac.cn

  • 中图分类号: P618.41

Caldera complex, hosted rocks and alteration of the Yandong porphyry copper deposit in Eastern Tianshan, Xinjiang

  • 延东斑岩铜矿床位于新疆东天山晚古生代大南湖岛弧中。延东矿区出露地层是石炭纪企鹅山组火山-沉积岩,我们研究提出延东矿区出露的火山-沉积岩以及浅成侵入岩为石炭纪火山喷发-岩浆侵入产物,并将其划分成两个旋回五个岩相:第一旋回包括溢流相(玄武岩和安山岩)、爆发相(集块角砾熔岩)和爆发-沉积相(凝灰岩);第二旋回包括次火山相(闪长玢岩和闪长岩)和浅成侵入相(斜长花岗斑岩)。容矿岩石是次火山相的闪长玢岩和闪长岩以及浅成侵入相的斜长花岗斑岩。闪长玢岩发育中性斑岩蚀变系统,包括内部的绢云母-绿泥石蚀变带和绿泥石-绢云母蚀变带和外围的青磐岩化带,其中绢云母-绿泥石蚀变带控制本区部分富矿体的形成和分布;斜长花岗斑岩发育酸性斑岩蚀变系统,从中心向外依次为黄铁绢英岩化带、强绢云母化带和弱绢云母化带,黄铁绢英岩化带控制本区部分富矿体的形成和分布。这两个蚀变系统以钾硅酸盐化蚀变不发育和绢云母化广泛发育为特点。

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  • 图 1 

    中亚造山带简图及其重要斑岩铜矿分布图(a,据Shen et al., 2010)和新疆东天山构造单元图(b,据Qin et al., 2011)

    Figure 1. 

    Schematic map of the Central Asian Orogenic Belt showing principal porphyry copper deposits (a, after Shen et al., 2010) and geological map of the Eastern Tianshan (b, after Qin et al., 2011)

    图 2 

    新疆东天山土屋-延东铜矿田地质略图(据张征等,2010资料修编)

    Figure 2. 

    Sketch map of Tuwu-Yandong copper deposit in Eastern Tianshan Mountains (modified after Zhang et al., 2010)

    图 3 

    延东铜矿地质略图(a,据姜立丰等,2003资料修编)显示火山喷发-岩浆侵入岩相和延东铜矿0勘探线地表火山喷发-岩浆侵入岩相剖面测量图(b,实测)

    Figure 3. 

    Sketch map of Yandong copper deposit (a, modified after Jiang et al., 2003) showing the two cycles and five lithofacies of the volcanic-magmatic activity and geological cross sections along Line 0 showing the lithofacies and locations of samples (b, measured by authors)

    图 4 

    延东矿区火山溢流相(玄武岩和安山岩)特点

    Figure 4. 

    Photomicrographs of volcanic rocks (basalt and andesite) from the Yandong region

    图 5 

    延东地区火山碎屑岩特点

    Figure 5. 

    Photographs and photomicrographs of pyroclastic rocks from the Yandong region

    图 6 

    延东斑岩铜矿床15号勘探线矿体(a)、岩性(b)和蚀变(c)剖面图(实测)

    Figure 6. 

    Cross section along section Line 15 with orebody (a), lithologies (b) and alteration (c) across Yandong porphyry Cu deposit showing the locations of samples (measured by authors)

    图 7 

    延东斑岩铜矿床63号勘探线矿体(a)、岩性(b)和蚀变(c)剖面图(实测)

    Figure 7. 

    Cross section along section Line 63 with orebody (a), lithologies (b) and alteration (c) across Yandong porphyry Cu deposit showing the locations of samples (measured by authors)

    图 8 

    延东地区次火山岩及侵入岩类型及特点

    Figure 8. 

    Photomicrographs of subvolcanic rocks and intrusions from the Yandong region

    图 9 

    延东矿区火山-次火山岩TAS图解(据Le Bas et al., 1986)

    Figure 9. 

    TAS diagram of the volcanic and subvolcanic rocks in the Yandong deposit (after Le Bas et al., 1986)

    图 10 

    延东矿区火山-次火山岩和斜长花岗斑岩稀土配分图(a,据Nakamura,1974)和微量元素蛛网图(b,据Sun and McDonough, 1989)

    Figure 10. 

    Chondrite-normalized REE distribution patterns (a, after Nakamura, 1974) and N-MORB-normalized trace element spider diagram (b, after Sun and McDonough, 1989) for volcanic and subvolcanic rocks in the Yandong deposit

    图 11 

    延东矿区闪长玢岩(a-c)及斜长花岗斑岩(d-f)蚀变类型及特点

    Figure 11. 

    Main alteration types in diorite porphyry (a-c) and plagiogranite porphyry (d-f) from Yandong deposit

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出版历程
收稿日期:  2011-11-18
修回日期:  2012-03-16
刊出日期:  2012-07-01

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