New Dating of the Fuling Granite Body with LA-ICP-MS Zircon U-Pb in Jixi,Anhui Province and Their Geological Significance

Fang CHEN; Deng-hong WANG; Jian-guo DU; Wei XU; Hai-feng HU; You-lin YU; Jin-lai TANG

Rock and Mineral Analysis > 2013 > 32(6): 970-977.

Fang CHEN, Deng-hong WANG, Jian-guo DU, Wei XU, Hai-feng HU, You-lin YU, Jin-lai TANG. New Dating of the Fuling Granite Body with LA-ICP-MS Zircon U-Pb in Jixi,Anhui Province and Their Geological Significance[J]. Rock and Mineral Analysis, 2013, 32(6): 970-977.

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New Dating of the Fuling Granite Body with LA-ICP-MS Zircon U-Pb in Jixi,Anhui Province and Their Geological Significance

1.
School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China
2.
Geological Survey of Anhui Province,Hefei 230001, China
3.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Ministry of Land and Resources, Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037, China
4.
School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China

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Received Date: March 25, 2013
Accepted Date: May 07, 2013
Published Date: November 30, 2013

Abstract

ABSTRACT

The Fuling rock body is located in the eastern section of the northern part of the Qinhang metallogenic belt in southern Anhui Province. There are many deposits (spots) that have been explored around it. 2 fresh granite samples in the surface of Fuling rock body have been collected and the zircons analyzed using LA-ICP-MS method in an attempt to determine the relationship between the rock body and mineralization. The weighted average ²⁰⁶Pb/²³⁸U ages for zircons from the coarse-grained K-feldspar granite collected in the transition part of the Xiaochangxi unit is (129.95±0.70) Ma (n=14), MSWD=1.7, which indicates the formation age of the main part of the Xiaochangxi unit. The average ²⁰⁶Pb/²³⁸U ages for zircons from the middle-fine-grained K-feldspar granite collected in the edge of the Fanzhengjian unit is (133.9±1.1) Ma(n=8), MSWD=1.06, which is not in agreement with the formation age of the main part of the Fanzhengjian unit. These results contradict with the geological mapping. Either the rocks cooled gradually from the rim inwards, or the two different ages represent the diagenetic age and the emplacement age respectively. The Fuling rock body is the production of magma activity in the early stage of the late Yanshanian Period (early Cretaceous), which is almost 10 Ma older than previous research results. This dating is more representative of the formation age of the rock body according to the high precision of the Zircon U-Pb technology.
- Fuling granite,
- LA-ICP-MS zircon U-Pb dating,
- early Cretaceous

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References (31)

References

周涛发,袁峰,侯明金,杜建国,范裕,朱光,岳书仓.江南隆起带东段皖赣相邻区燕山期花岗岩类的成因及形成的地球动力学背景[J].矿物岩石,2004,24(3): 65-71. http://www.cnki.com.cn/Article/CJFDTOTAL-KWYS200403008.htm

邓晋福,莫宣学,赵海玲,罗照华,赵国春,戴圣潜.中国东部燕山期岩石圈-软流圈系统大灾变与成矿环境[J].矿床地质,1999,18(4): 309-315. http://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ199904003.htm

毛景文,王志良.中国东部大规模成矿时限及其动力学背景的初步探讨[J].矿床地质,2000,19(4): 289-296. http://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ200004000.htm

张虹,戴圣潜,管运财,吴海权.皖南绩溪伏岭岩体岩石地球化学特征[J].中国地质,2005,32(3): 411-416. http://www.cnki.com.cn/Article/CJFDTOTAL-DIZI200503009.htm

Dallmeyer R D, van Breeman O.Rb-Sr whole-rock and ⁴⁰Ar-³⁹Ar mineral ages of the Togus and Hallowell quartz monzonite and Three Mile Pond granodiorite plutons, South-Central Maine: Their bearing on post-Acadian cooling history[J].Contributions to Mineralogy and Petrology, 1981, 78(1): 61-73. doi: 10.1007/BF00371144

Sun W D, Li S G, Chen Y D, Li Y J.Timing of synorogenic granitoids in the South Qinling, Central China: Constraints on the evolution of the Qinling-Dabie orogenic belt[J].Journal of Geology,2002, 110(4): 457-468. doi: 10.1086/340632

徐志刚,陈毓川,王登红,陈郑辉,李厚明.中国成矿区带划分方案[M].北京:地质出版社,2008: 133-135.

郑勇,余心起,王德恩,汪诚.安徽绩溪伏岭岩体隆升时代的磷灰石裂变径迹证据[J].地质论评,2009,55(3): 385-394. http://www.cnki.com.cn/Article/CJFDTOTAL-DZLP200903012.htm

Yu X Q, Hou M J, Wang D E.No evidence for a large Mesozoic overthrust in the Lantian area of Anhui Province, South China[J].Journal of Asian Earth Sciences,2005,25(4): 601-609. doi: 10.1016/j.jseaes.2004.05.007

余心起,江来利,许卫,邱瑞龙,杜建国,戴圣潜.皖浙赣断裂带的界定及其基本特征[J].地学前缘,2007,14(3): 102-113. http://www.cnki.com.cn/Article/CJFDTOTAL-DXQY200703013.htm

安徽省地质矿产局.安徽省区域地质志[M].北京: 地质出版社,1985: 1-921.

宋彪,张玉海,万俞生,简平.锆石SHRIMP样品靶制作、年龄测定及有关现象讨论[J].地质论评,2002,48(Z1): 26-30. http://www.cnki.com.cn/Article/CJFDTOTAL-DZLP2002S1006.htm

武国忠,陈郑辉,肖光铭.广东云浮高枨银铅锌多金属矿区成矿地质特征及成岩时代研究[J].大地构造与成矿学,2012,36(3): 434-439. http://www.cnki.com.cn/Article/CJFDTOTAL-DGYK201203019.htm

黄国成,王登红,吴小勇.浙江临安夏色岭钨矿含矿岩体特征及LA-ICP-MS锆石铀-铅年代学研究[J].岩矿测试,2012,31(5): 915-921. http://www.cnki.com.cn/Article/CJFDTOTAL-YKCS201205029.htm

黄国成,王登红,吴小勇.浙江临安千亩田钨铍矿区花岗岩锆石LA-ICP-MS U-Pb年龄及对区域找矿的意义[J].大地构造与成矿学,2012,36(3): 392-398. http://www.cnki.com.cn/Article/CJFDTOTAL-DGYK201203013.htm

Liu Y S, Hu Z C, Gao S, Günther D, Xu J, Gao C, Chen H.In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard[J].Chemical Geology, 2008, 257: 34-43. doi: 10.1016/j.chemgeo.2008.08.004

Liu Y S, Gao S, Hu Z C, Gao C G, Zong K Q, Wang D B.Continental and oceanic crust recycling-induced melt-peridotite interactions in the Trans-North China Orogen: U-Pb dating, Hf isotopes and trace elements in zircons from mantle xenoliths[J].Journal of Petrology, 2010, 51: 537-571. doi: 10.1093/petrology/egp082

柳小明,高山,第五春荣,袁洪林,胡兆初.单颗粒锆石的20μm小斑束原位微区LA-ICP-MS U-Pb年龄和微量元素的同时测定[J].科学通报,2007,52(2): 228-235.

侯可军,李延河,田有荣.LA-MC-ICP-MS锆石微区原位U-Pb定年技术[J].矿床地质,2009,28(4): 481-492. http://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ200904009.htm

Sláma J, Kosler J, Condon D J, Crowley J L, Gerdes A, Hanchar J M, Horstwood M A S, Morris G A, Nasdala L, Norberg N, Schaltegger U, Schoene B, Tubrett M N, Whitehouse M J. Pleovice zircon a new natural reference material for U-Pb and Hf isotopic micro analysis[J].Chemical Geology, 2008, 249: 1-35. doi: 10.1016/j.chemgeo.2007.11.005

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. doi: 10.3321/j.issn:0023-074X.2004.16.002

周涛发,范裕,袁峰,张乐骏,钱兵,马良,杨西飞,Cooke D R.宁芜(南京-芜湖)盆地火山岩的年代学及其意义[J].中国科学: 地球科学,2011,41(7): 960-971. http://www.cnki.com.cn/Article/CJFDTOTAL-JDXK201107010.htm

Belousova E A, Griffin W L, O'Reilly S Y, Pearson N J.Igneous zircon: Trace element composition as an indicator of source rock type[J].Contributions to Mineralogy and Petrology, 2002, 143: 602-622. doi: 10.1007/s00410-002-0364-7

杜建国,戴圣潜,莫宣学,邓晋福,许卫.安徽沿江地区燕山期火成岩成岩成矿地质背景[J].地学前缘,2003,10(4): 551-560. http://www.cnki.com.cn/Article/CJFDTOTAL-DXQY200304030.htm

陈芳,杜建国,许卫.安徽青阳百丈岩钨钼矿床成矿背景与成矿模式[J].地质论评,2013,59(3): 437-445. http://www.cnki.com.cn/Article/CJFDTOTAL-DZLP201303005.htm

陶奎元,毛建仁,邢光福,杨祝良,赵宇.中国东部燕山期火山-岩浆大爆发[J].矿床地质,1999,18(4): 316-322. http://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ199904004.htm

王登红,陈郑辉,陈毓川,唐菊型,李建康,应立娟,王成辉,刘善宝,李立兴,秦燕,李华芹,屈文俊,王彦斌,陈文,张彦.我国重要矿产地成岩成矿年代学研究新数据[J].地质学报,2010,84(7): 1030-1040. http://www.cnki.com.cn/Article/CJFDTOTAL-DZXE201007009.htm

王登红,陈郑辉,黄国成,武国忠,陈芳.华南"南钨北扩"、"东钨西扩"及其找矿方向探讨[J].大地构造与成矿学,2012,36(3): 322-329. http://www.cnki.com.cn/Article/CJFDTOTAL-DGYK201203005.htm

杜建国,马晓红.长江中下游成矿带陆相火山岩型铁矿成矿规律[J].安徽地质,2011,21(2): 131-137. http://www.cnki.com.cn/Article/CJFDTOTAL-AHDZ201102012.htm

周涛发,范裕,袁峰,张乐骏,马良,钱兵,谢杰.长江中下游成矿带火山岩盆地的成岩成矿作用[J].地质学报,2011,85(5): 712-730. http://www.cnki.com.cn/Article/CJFDTOTAL-DZXE201105010.htm

周涛发,范裕,袁峰,钟国雄.长江中下游成矿带地质与矿产研究进展[J].岩石学报,2012,28(10): 3051-3066. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201210003.htm

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New Dating of the Fuling Granite Body with LA-ICP-MS Zircon U-Pb in Jixi,Anhui Province and Their Geological Significance

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