西准噶尔托里县都伦河东岩体锆石U-Pb年龄及地质意义
Zircon U-Pb Age and Geological Significance of Dulunhe Granite in Tuoli, Western Junggar
-
摘要: 西准噶尔地体晚古生代岩浆活动强烈, 其中以达尔布特构造-岩浆带最为显著。近年来, 对该带大岩基研究较多, 而对该带小岩体的研究主要集中在包古图一带成矿斑岩上, 对其余小岩体研究较为局限。位于西准噶尔托里县的都伦河东岩体内外接触带有较强的孔雀石化、硅化、碳酸盐化、绿泥石化、黄铁矿化等蚀变与矿化, 岩体内部发育镁铁质微粒包体。本次于寄主石英闪长岩中获得(312.6±4.2)Ma(n=21, MSWD=0.15, 95%置信度)的LA-ICP-MS锆石U-Pb年龄, 其与包古图小岩体(Au-Cu矿化)和夏尔莆小岩体(Cu-Mo矿化)的成岩时代基本一致, 各岩体形成的构造环境大致相同。该可靠年龄为研究本区与小岩体有关, 与岩浆混合作用有关的Au-Cu-Mo成矿作用时代提供了年代学约束。Abstract: There are large numbers of intrusive granites exposed along the Daerbute tectonic-magmatic belt in the center of western Junggar. Many researches have been conducted on the batholites instead of small granite intrusions, which mainly distributed in porphyry mineralization belt of the Baogutu region. Wallrock alterations such as malachitization, silicification, carbonatization, chloritization and pyritization are well developed in Dulunhe granite, which is located in Kuoyitasi area of Zayier Mountain, and abundant mafic microgranular enclaves can be found in these host rocks, however, accurate geochronology data is still insufficient. High-precision LA-ICP-MS zircon U-Pb dating reveals that the quartz diorite in the Dulunhe granite is formed at (312.6±4.2)Ma(n=21, MSWD=0.15, 95% confidence degrees) in early late Carboniferous. Combined with previous researches, the authors suggest that the age of Dulunhe granite is consistent with small granites like Baogutu granite (Au-Cu mineralization) and Xiaerpu granite (Cu-Mo mineralization); both of them are probably formed in the subduction-related setting. This reliable age provides chronology constraints for the study of regional mineralization age that related to small granite and magma mixing of Au-Cu-Mo deposit.
-
Key words:
- magma mixed granite /
- zircon U-Pb dating /
- mineralization age /
- Dulunhe granite /
- west Junggar
-
-
冯乾文, 李锦轶, 刘建峰, 等.新疆西准噶尔红山岩体及其中闪长质岩墙的时代:来自锆石LA-ICP-MS定年的证据[J].岩石学报, 2012, 28(9):2935-2949.
FENG Qianwen, LI Jinyi, LIU Jianfeng, et al. Ages of the Hongshan granite and intruding dioritic dyke swarms, in western Junggar, Xinjiang, NW China: Evidence form LA-ICP-MS zircon chronology[J].Acta Petrologica Sinica, 2012, 28(9):2935-2949.
高山林, 何治亮, 周祖翼.西准噶尔克拉玛依花岗岩体地球化学特征及其意义[J].新疆地质,2006, 24(2):125-130.
GAO Shanlin, HE Zhiliang, ZHOU Zuyi. Geochemical Characteristics of the Karamay Granitoids and their Significance in West Junggar, Xinjiang[J].Xinjiang Geology, 2006, 24(2):125-130.
高睿, 肖龙, 王国灿, 等.西准噶尔晚古生代岩浆活动和构造背景[J].岩石学报, 2013, 29(10):3413-3434 GAO Rui, XIAO Long, WANG Guocan, et al. Paleozoic magmatism and tectonic setting in West Junggar[J]. Acta Petrologica Sinica, 2013, 29(10):3413-3434.
韩宝福, 季建清, 宋彪, 等.新疆准噶尔晚古生代陆壳垂向生长(Ⅰ)—后碰撞深成岩浆活动的时限[J].岩石学报, 2006, 22(5):1077-1086.
HAN Baofu, JI Jianqing, SONG Biao, et al. Late Paleozoic vertical growth of continental crust around the Junggar Basin, Xinjiang, China (Part Ⅰ):Timing of post-collisional plutonism[J].Acta Petrologica Sinica, 2006, 22(5):1077-1086.
贺敬博, 陈斌.西准噶尔克拉玛依岩体的成因:年代学、岩石学和地球化学证据[J].地学前缘, 2011, 18(2):191-211.
HE Jingbo, CHEN Bin. Petrogenesis of Karamay plutons in the west Junggar:Constraints from geochronology, petrology and geochemistry[J].Earth Science Frontiers, 2011, 18(2):191-211.
胡洋, 王居里, 王建其, 等.新疆西准噶尔庙尔沟岩体的地球化学及年代学研究[J].岩石学报, 2015, 31(2):505-522.
HU Yang, WANG Juli, WANG Jianqi, et al. Geochemistry and geochronology of the Miaoergou granite pluton in West Junggar, Xinjiang[J].Acta Petrologica Sinica, 2015, 31(2):505-522.
何国琦, 朱永峰.中国新疆及邻区地质矿产对比研究[J].中国地质, 2006, 33(3):451-460.
HE Guoqi, ZHU Yongfeng. Comparative study of the geology and mineral resources in Xinjiang, China, and its adjacent regions[J].Geology in China,2006, 33(3):451-460.
刘玉琳, 郭丽爽, 宋会侠, 等.新疆西准噶尔斑岩铜矿年代学研究[J].中国科学D辑:地球科学, 2009, 39(10):1466-1472.
LIU Yulin, GUO Lishuang, SONG Huixia, et al. Geochronology of Baogutu porphyry copper deposit in Western Junggar area[J].Sci China Ser D-Earth Sci, 2009, 39(10):1466-1472.
李永军, 王冉, 李卫东, 等.西准噶尔达尔布特南构造—岩浆岩带斑岩型铜—钼矿新发现及找矿思路[J].岩石学报, 2012, 28(7):2009-2014.
LI Yongjun, WANG Ran, LI Weidong, et al. Discovery of the porphyry copper-molybdenum deposits and prospecting reflections in southern Darbut teoctonic magmatic belts, West Junggar, China[J].Acta Petrologica Sinica, 2012, 28(7):2009-2014.
李永军, 李甘雨, 康磊, 等.西准噶尔夏尔莆岩体岩浆混合的锆石U-Pb年代学证据[J].岩石学报, 2013, 29(9):3023-3030.
LI Yongjun, LI Ganyu, KANG Lei, et al. Evidence of zircon U-Pb geochronology for magma mixing of Xiaerpu granite in West Junggar[J].Acta Petrologica Sinica, 2013, 29(9):3023-3030.
柳小明, 高山, 袁洪林, 等. 193nm LA-ICP MS对国际地质标准参考物质中42种主量和微量元素的分析[J].岩石学报, 2002, 18(3):408-418.
LIU Xiaoming, GAO Shan, YUAN Honglin, et al. Analysis of 42 major and trace elements in glass standard reference materials by 193nm LA-ICP MS[J].Acta Petrologica Sinica, 2002, 18(3):408-418.
庞振甲, 李永军, 赵玉梅, 等.西准阿克巴斯陶铝质A型花岗岩厘定及意义[J].新疆地质, 2010, 28(2):119-124.
PANG Zhenjia, LI Yongjun, ZHAO Yumei, et al. The Determination and Its Significance of Akebasitao Aluminous A-type Granites in West Junggar, Xinjiang[J].Xinjiang Geology, 2010, 28(2):119-124.
宋会侠, 刘玉琳, 屈文俊, 等.新疆包古图斑岩铜矿矿床地质特征[J].岩石学报, 2007, 23(8):1981-1988.
SONG Huixia, LIU Yulin, QU Wenjun, et al. Geological characters of Baogutu porphyry copper deposit in Xinjiang, NW China[J].Acta Petrologica Sinica, 2007, 23(8):1981-1988.
申萍, 沈远超, 刘铁兵, 等.新疆西北缘晚古生代金铜成矿作用与构造演化[J].岩石学报, 2008, 24(5):1087-1100.
SHEN Ping, SHEN Yuanchao, LIU Tiebing, et al. Late Paleozoic gold and copper mineralization and tectonic evolution in northwestern Xinjiang, China[J].Acta Petrologica Sinica, 2008, 24(5):1087-1100.
申萍, 沈远超, 潘成泽, 等.新疆哈图—包古图金铜矿集区锆石年龄及成矿特点[J].岩石学报, 2010, 26(10):2879-2893.
SHEN Ping, SHEN Yuanchao, PAN Chengze, et al. Zircon age and metallogenic characteristics of the Hatu-Baogutu Au-Cu metallogenic concentric region in Xinjiang[J]. Acta Petrologica Sinica, 2010, 26(10):2879-2893.
苏玉平, 唐红峰, 侯广顺, 等.新疆西准噶尔达拉布特构造带铝质A型花岗岩的地球化学研究[J].地球化学, 2006, 35(1):55-67.
SU Yuping, TANG Hongfeng, HOU Guangshun, et al. Geochemistry of aluminous A-type granites along Darabut tectonic belt in West Junggar, Xinjiang[J].Geochimica, 2006, 35(1):55-67.
唐功建, 王强, 赵振华, 等.西准噶尔包古图成矿斑岩年代学与地球化学:岩石成因与构造、铜金成矿意义[J].地球科学:中国地质大学学报, 2009, 34(1):56-74.
TANG Gongjian, WANG Qiang, ZHAO Zhenhua, et al. Geochronology and Geochemistry of the Ore-Bearing Porphyries in the Baogutu Area (Western Junggar):Petrogenesis and Their Implications for Tectonics and Cu-Au Mineralization [J].Earth Science-Journal of China University of Geosciences, 2009, 34(1):56-74.
伍建机, 陈斌.西准噶尔庙尔沟后碰撞花岗岩微量元素和Nd-Sr同位素特征及成因[J].新疆地质, 2004, 22(1):29-35.
WU Jianji, CHEN Bin. Trace Element and Nd-Sr Isotope Characteristics of the Post-Collisional Granitoids from Miaoergou West Junggar, and Implication for Petrogenesis[J].Xinjiang Geology, 2004, 22(1):29-35.
魏少妮, 程军峰, 喻达兵, 等.新疆包古图Ⅲ号岩体岩石学和锆石SHRIMP年代学研究[J].地学前缘, 2011, 18(2):212-222.
WEI Shaoni, CHENG Junfeng, YU Dabing, et al. Petrology and SHRIMP zircon ages of intrusive body Ⅲ in Baogutu Area, Xinjiang[J].Earth Science Frontiers, 2011, 18(2):212-222.
魏少妮, 朱永峰.新疆西准噶尔包古图地区中酸性侵入体的岩石学、年代学和地球化学研究[J].岩石学报, 2015, 31(1):143-160.
WEI Shaoni, ZHU Yongfeng. Petrology, geochronology and geochemistry of intermediate-acidic intrusions in Baogutu area, West Junggar, Xinjiang[J].Acta Petrologica Sinica, 2015, 31(1):143-160.
吴元保, 郑永飞.锆石成因矿物学研究及其对U-Pb年龄解释的制约[J].科学通报, 2004, 49(16):1589-1604.
WU Yuanbao, ZHENG Yongfei. A study on the genetic mineralogy of zircon and the constrain on the interpretation for U-Pb age [J].Chinese Science Bulletin, 2004, 49(16):1589-1604.
王强, 赵振华, 许继峰, 等.天山北部石炭纪埃达克岩—高镁安山岩—富Nb岛弧玄武质岩:对中亚造山带显生宙地壳增生与铜金成矿的意义[J].岩石学报, 2006, 22(1):11-30.
WANG Qiang, ZHAO Zhenhua, XU Jifeng, et al. Carboniferous adakite-high-Mg andesite-Nb-enriched basaltic rock suites in the Northern Tianshan area: Implications for Phanerozoic crustal growth in the Central Asia Orogenic Belt and Cu-Au mineralization[J].Acta Petrologica Sinica, 2006, 22(1):11-30.
王玉往, 王京彬, 龙灵利, 等.岩浆混合作用的类型、标志、机制、模式及其与成矿的的关系—以新疆北部为例[J].岩石学报, 2012,28(8):2317-2330.
WANG Yuwang, WANG Jingbin, LONG Lingli, et al. Type, indicator, mechanism, model and relationship with mineralization of magma mixing: A case study in North Xinjiang[J].Acta Petrologica Sinica, 2012, 28(8):2317-2330.
邢丽萍.新疆西准噶尔夏尔莆花岗岩含矿性研究[J].地质与资源, 2014, 23(3):280-283.
XING Liping. Study on the Ore Potentiality of the Xiaerpu Granite in Western Junggar, Xinjiang[J].Geology and Resources, 2014, 23(3):280-283.
尹继元, 袁超, 王毓婧, 等.新疆西准噶尔晚古生代大地构造演化的岩浆活动记录[J].大地构造与成矿学, 2011, 35(2):278-291.
YIN Jiyuan, YUAN Chao, WANG Yujing, et al. Magmatic Records on the Late Paleozoic Tectonic Evolution of Western Junggar, Xinjiang[J].Geotectonica et Metallogenia, 2011, 35(2):278-291.
尹继元, 陈文, 喻顺, 等.西准噶尔包古图富镁闪长质岩墙的时代、地球化学特征以及铜金成矿意义[J].中国地质, 2013, 40(4):1030-1043.
YIN Jiyuan, CHEN Wen, YU Shun, et al. Age, geochemical features and Cu-Au mineralization significance of the magnesian dioritic dykes in Baogutu area of west Junggar[J].Geology in China, 2013, 40(4):1030-1043.
张连昌, 万博, 焦学军, 等.西准包古图含铜斑岩的埃达克岩特征及其地质意义[J].中国地质, 2006, 33(3):626-631.
ZHANG Lianchang, WAN Bo, JIAO Xuejun, et al. Characteristics and geological significance of adakitic rocks in copper-bearing porphyry in Baogutu, western Junggar[J].Geology in China, 2006, 33(3):626-631.
张兵, 康磊, 王晓刚, 等.新疆西准噶尔夏尔莆岩体中微粒镁铁质包体特征及意义[J].新疆地质, 2009, 27(3):207-211.
ZHANG Bing, KANG Lei, WANG Xiaogang, et al. Features and Meaning of Mafic Microgranular Enclave in Xiaerpu Granite in West Junggar, Xinjiang[J].Xinjiang Geology, 2009, 27(3):207-211.
朱金初, 张佩华, 谢才富, 等.桂东北里松花岗岩中暗色包体的岩浆混合成因[J].地球化学, 2006, 35(5):506-516.
ZHU Jinchu, ZHANG Peihua, XIE Caifu, et al. Magma mixing origin of the mafic enclaves in Lisong Granite, NE Guangxi, western Nanling Mountains[J].Geochimica, 2006, 35(5):506-516.
张照伟, 李文渊, 张江伟, 等. 新疆天山石炭—二叠纪大规模岩浆成矿事件与形成机制探讨[J].西北地质, 2014, 47(1):36-51.
ZHANG Zhaowei, LI Wenyuan, ZHANG Jiangwei, et al. Mineralization and Formation Mechanism of Carboniferous-Permian Large-scale Magmatic Ore Deposits in Tianshan Orogenic Belt and Adjacent Area, Xinjiang[J].Northwestern Geology, 2014, 47(1):36-51.
朱永峰, 何国琦, 安芳.中亚成矿域核心地区地质演化与成矿规律[J].地质通报, 2007, 26(9):1167-1177.
ZHU Yongfeng, HE Guoqi, AN Fang. Geological evolution and metallogeny in the core part of the Central Asian metallogenicdomain[J].Geological Bulletin of China, 2007, 26(9):1167-1177.
朱永峰.中亚成矿域核心区地质演化和巨型成矿带划分[J].矿床地质, 2014.33(3):471-485.
ZHU Yongfeng. Geological evolution and division of giant metallogenic belts in core part of Central Asian Metallogenic Region[J].Mineral Deposits, 2014, 33(3):471-485.
GENG Hongyan, SUN Min, YUAN Chao, et al. Geochemical, Sr-Nd and zircon U-Pb-Hf isotopic studies of Late Carboniferous magmatism in the West Junggar, Xinjiang: Implications for ridge subduction? [J].Chemical Geology, 2009, 266:364-389.
SHEN Ping, SHEN Yuanchao, LIU Tiebing, et al. Geochemical signature of porphyries in the Baogutu porphyry copper belt, western Junggar, NW China[J].Gondwana Research, 2009, 16(2):227-242.
SHEN Ping, SHEN Yuanchao, PAN Hongdi, et al. Geochronology and isotope geochemistry of the Baogutu porphyry copper deposit in the West Junggar region, Xinjiang, China[J].Journal of Asian Earth Sciences, 2012, 49:99-115.
WANG Ran, LI YongJun, HAN Xin, et al. U-Pb and Re-Os Geochronology of Karamay Porphyry Mo-Cu Deposit in Western Junggar, NW China[J].Resource Geology, 2013, 63(4):412-420.
YUAN Honglin, GAO Shan, DAI Mengning, et al. Simultaneous determinations of U-Pb age, Hf isotopes and trace element compositions of zircon by excimer laser-ablation quadrupole and multiple-collector ICP-MS[J].Chemical Geology, 2008, 247(1-2):100-118.
-
计量
- 文章访问数: 2525
- PDF下载数: 2149
- 施引文献: 0
下载: