Detrital zircon U-Pb geochronology of the Qinling Group in Wulichuan-Zhaigen area, West Henan
-
摘要:
秦岭岩群为北秦岭微陆块的主要组成部分，其时代的准确厘定对秦岭造山带构造演化研究具有重要的地质意义。本次工作对五里川-寨根一带秦岭岩群雁岭沟岩组钠长二云片岩和郭庄岩组矽线二云二长片麻岩进行碎屑锆石LA-ICP-MS U-Pb同位素年代学研究。钠长二云片岩具有岩浆成因特征的碎屑锆石核部年龄主要存在545~551 Ma、754~778 Ma、900~1000 Ma、1340~1830 Ma和2300~2500 Ma 5个年龄段，并以900~1000 Ma段碎屑锆石的峰最明显；部分数据点在锆石U-Pb谐和图上拟合成一条上交点年龄为（2478 ±25）Ma的不一致线。矽线二云二长片麻岩年龄主要集中于1400~1800 Ma，另有4颗锆石年龄为1134~1243 Ma，其中最年轻的1颗碎屑岩浆锆石年龄为（1134±17）Ma。根据分析结果，推断本地区雁岭沟岩组的形成时代应晚于900 Ma，早于438 Ma的五垛山岩体。郭庄岩组的主体形成于中元古代晚期，时代应该晚于1122 Ma，老于962 Ma的新元古代花岗岩类。雁岭沟岩组最主要的物质来源为新元古代花岗岩，其次为新太古代-古元古代陆壳，少部分来源于郭庄岩组；郭庄岩组物质来源主要为的古元古代晚期至中元古代早期的花岗岩陆壳。雁岭沟岩组与郭庄岩组形成时代不同，二者之间存在沉积间断，主要物源区也不相同，雁岭沟岩组中甚至有少量郭庄岩组剥蚀后再沉积的物质。因此，二者是不同的构造岩片，本地区雁岭沟岩组应从秦岭岩群中解体出来。
Abstract:The Qinling Group is the main component of the Qinling microcontinent, and the accurate determination of its age is of great significance for the study of the tectonic evolution of the Qinling orogenic belt. This paper presents zircon LA-MC-ICPMS U-Pb geochronologic data of the albite two-mica schist from Yanlinggou Formation and the sillimanite two-mica monzo-gneiss from Guozhuang Formation of Qinling Group in Wulichuan-Zhaigen area. The dating results of the magmatic core of detrital zircons from albite two-mica schist show 5 age groups mainly, i.e., 545-551 Ma, 754-778 Ma, 900-1000 Ma, 1340-1830 Ma and 2300-2500 Ma, in which the 900-1000 Ma group exhibits most obvious peaks of detrital zircons, and an inconsistent line of the upper intersection point of (2478 ±25) Ma can be fitted to a part of data points. The sillimanite two-mica monzo-gneiss ages are mainly concentrated in 1400-1800 Ma, with only four data points being in the range of 1134-1243 Ma, and the youngest magmatic core of detrital zircons is (1103 ±6) Ma. According to the data, the authors hold that the age of Yanlinggou Formation was younger than 900 Ma, and older than 438 Ma pluton of Wuduoshan. Guozhuang Formation is mainly formed during late Mesoproterozoic, younger than 1122 Ma, and older than 962 Ma Neoproterozoic granitic rocks. The sedimentary material of Yanlinggou Formation complex was mainly from Neoproterozoic granitic rocks and Proterozoic continental crust, with a little from Guozhuang Formation. Most sources of Guozhuang Formation were from the late Paleoproterozoic to Mesoproterozoic granitic continental crust. Yanlinggou Formation and Guozhuang Formation were formed in different periods, and there was a discontinuity between them. Their sedimentary materials were also different, and even a small amount of material of Yanlinggou Formation was postredeposition material from Guozhuang Formation. The two formations are different tectonic sheets. Therefore, the Yanlinggou Formation should be separated from the Qinling Group.
-
Key words:
- west Henan /
- Qinling orogenic belt /
- Qinling Group /
- Yanlinggou Formation /
- Gaungzhou Formation /
- detrital zircon U-Pb /
- LA-ICP-MS
-
-
表 1 秦岭岩群碎屑锆石LA-MC-ICP-MS锆石U-Th-Pb同位素测定数据
Table 1. U-Th-Pb isotope composition of detrital zircons from Qingling Group by LA-MC-ICP-MS
下载: 导出CSV
-
Chen Ruibao, Zhang Yan'an. 1993. The sequence and deformation features of Xiahc Rock Group in western Henan[J]. Henan Geology, 11(2):104-111(in Chinese with Englishabstract).
Diwu Chunrong, Sun Yong, Zhao Yan, Liu Bingxiang, Lai Shaocong, 2014. Geochronological, geochemical, and Nd-Hf isotopic studies of the Qinling Complex, central China:Implications for the evolutionary history of the North Qinling Orogenic Belt[J]. Geoscience Frontiers, 5:499-513. doi: 10.1016/j.gsf.2014.04.001
Gehrels G, Johnsson M J, Howwell D G. 1999. Detrital zircon geochronology of the Adams Argillite and Nation RiverFormation, East-Central Alaska, U. S. A[J]. Sedi. Res., 69:135-144. doi: 10.2110/jsr.69.135
Hennan Bureau of Geology and Mineral Resources. 1997. Stratigraphic Division and Correlation of China:Henan Lithostratigraphy[M]. Wuhan:China University of Geosciences Press(in Chinese with English abstract).
Kalsbeek F, Frei D, Affaton P. 2008. Constraints on provenance, stratigraphic correlation and structural context of the Volta basin, Ghana, from detrital zircon geochronology:An Amazonianconnection[J]. Sedi. Geol., 212:86-95. doi: 10.1016/j.sedgeo.2008.10.005
Li Huaikun, Geng Jianzhen, Hao Shuang, Zhang Yongqing, Li Huimin. 2009. Research on the dating zircon U-Pb age by LA-MCICPMS[J]. Bulletion of Mineralogy, Petrology and Geochemistry, 28(supp.):77(in Chinese with Englishabstract).
Li Huaikun, Zhu Shixing, Xiang Zhenqun, Su Wenbo, Lu Songnian, Zhou Hongying, Geng Jianzhen, Li Sheng, Yang Fengjie. 2010. Zircon U-Pb dating on tuff bed from Gaoyuzhuang Formation in Yanqing, Beijing:Further constraints on the new subdivision of the Mesoproterozoic stratigraphy in the northern North China Craton[J]. Acta Petrologica Sinica, 26(7):2131-2140(in Chinese with English abstract). https://h175.it.helsinki.fi/database/ageref1.php?crit=title&ord=1
Li Meng, Wang Chao, Li Rongshe, Peng Yan. 2015. Age and provenance of the Yingou Group in Sunan area of North Qilian Mountain:Evidence from detritalzircon U-Pb dating[J]. Geology in China, 42(3):601-615(in Chinese with English abstract).
Liu Yongsheng, Hu Zhaochu, Gao Shan, Detlef Günther, Xu Juan, Gao Changgui, Chen Haihong. 2008. In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard[J]. Chemical Geology, 257:34-43. doi: 10.1016/j.chemgeo.2008.08.004
Ludwig K R. 2003. User's Manual for Isoplot 3.0:A Geochronological Toolkit for Microsoft Excel[M]. Berkeley Geochronology Center, Special Publication, 4:1-71.
Lu Songnian, Li Huaikun, Chen Zhihong, Hao Guojie, Zhou Hongying, Guo Jinjing, Niu Guanghua, Xiang Zhenqun. 2003. Meso-Neoproterozoic Geological Evolution in the Qingling Orogeny and Its Response to the Supercontinental Event of Rodinia[M]. Beijing:Geological Publishing House, 1-194(in Chinese with Englishabstract).
Lu Songnian, Chen Zhihong, Xiang Zhenqun, Li Huaikun, Li Huimin, Song Biao. 2006. U-Pb ages of detrital zircons from the parametamorphic rocks of the Qingling Group and their geological significance[J]. Earth Science Frontiers, 13(6):303-310(in Chinese with English abstract).
Meng Qingren, Zhang Guowei. 2000. Geologic framework and tectonic evolution of the Qingling orogeny, Central China[J]. Tectonophysics, 323(3/4):183-196.
Naipauer M, Vujovich G I, Cingolani C A, et al. 2010. Detrital zircon analysis from the Neoproterozoic-Cambrian sedimentary cover(Cuyania terrane), Sierra de Pie De Palo, Argentina:Evidence ofa rift and passive margin system[J].J. South Amer. Ear. Sci., 29:306-326. doi: 10.1016/j.jsames.2009.10.001
Nelson J, Gehrels G. 2007. Detrital zircon geochronology and provenance of the southeastern Yukon-Tanana Terran[J]. Cana. J. Ear. Sci., 44:297-316. doi: 10.1139/e06-105
Pei Xianzhi, Wang Tao, Wang Yang, Li Houmin, Li Guoguang. 1999. Major geological events of Jinning period and their tectonic settings in the north Qingling[J]. Geological Journal of China Universities, 5(2):137-147(in Chinese with Englishabstract). https://www.deepdyve.com/lp/elsevier/origin-of-the-north-qinling-microcontinent-and-proterozoic-geotectonic-KUVadiJQ3u
Shi Yu, Yu Jinhai, Xu Xisheng, Qiu Jiansheng, Chen Lihui. 2009. Geochronology and geochemistry of the Qingling Group in the eastern Qingling Orogen[J]. Acta Petrologica Sinica, 25(10):2651-2670(in Chinese with Englishabstract).
Simon E Jackson, Norman J Pearson, William L Griffin, Elena A. Belousova. 2004. The application of laser ablation-inductively coupled plasma-mass spectrometry to in situ U-Pb zircon geochronology[J]. Chemical Geology, 211:47-69. doi: 10.1016/j.chemgeo.2004.06.017
Sircombe K N. 1999. Tracing provenance through the isotope ages oflittoral and sedimentary detrital zircon, eastern Australia[J]. Sedi. Geol., 124:47-67. doi: 10.1016/S0037-0738(98)00120-1
Tom Anderson. 2002. Correction of common lead in U-Pb analyses that do not report 204Pb[J]. Chemical Geology, 192(1/2):59-79.
Wan Yusheng, Liu Dunyi, Dong Chunyan, Yin Xiaoyan. 2011. SHRIMP zircon dationg of meta-sedimentary rock from the Qingling Group in the north of Xixia, North Qingling Orogenic Belt:Constraints on complex histories of source region and timing of deposition and metamorphism[J]. Acta Petrologica Sinica, 27(4):1172-1178(in Chinese with Englishabstract). https://www.researchgate.net/profile/Fukun_Chen
Wang Tao, Hu Nenggao, Pei Xianzhi, Yang Jiaxi, Li Wuping. 1997. The composition, tectonic framework and evolution of Qinling Complex, Central China[J]. Acta Geoscientia Sinica, 18(4):345-351(in Chinese with Englishabstract).
Yan Quanren, Wang Zongqi, Yan Zhen, Chen Junlu, Xiang Zhongjin, Wang Tao, Zhang Hongyuan. 2009. Tectonic affinity and timing of two types of amphibolites within the Qingling Group, North Qinling orogenic belt[J]. Acta Petrologica Sinica, 25:2177-2194(in Chinese with Englishabstract). https://www.researchgate.net/publication/285476064_Tectonic_affinity_and_timing_of_two_types_of_amphibolites_within_the_qinling_group_North_qinling_orogenic_belt
Yang Li, Chen Fukun, Yang Yizeng, Li Shuangqing, Zhu Xiyan. 2010. Zircon U-Pb ages of the Qinling Group in Danfeng area:Recording Mesoproterozoic and Neoproterozoic magmatism and Early Paleozoic metamorphism in the North Qingling terrain[J]. Acta Petrologica Sinica, 26(5):1589-1603(in Chinese with Englishabstract). https://www.researchgate.net/profile/Fukun_Chen
Yang Jingsui, Xu Zhiqin, Pei Xianzhi, Shi Rendeng, Wu Cailai, Zhang Jianxin, Li Haibing, Meng Fancong, Rong He. 2002. Discovery of diamond in north Qinling:Evidence for a giant UHPM Beltacross Central China and recognition of Paleozoic and Mesozoic dual deep subduction between North China and Yangtze Plates[J]. Acta Geologica Sinica, 76(4):484-495(in Chinese with Englishabstract).
You Zhengdong, Suo Shutian, Han Yujing, Zhong Zengqiu, Chen Nengsong. 1991. The Metamorphic Processes and Tectonic Analyses in the Core Complex of an Orogenic Belt:An Example from the Eastern Qingling Mountains[M]. Wuhan:Press of China University of Geosciences, 1-326(in Chinese with Englishabstract).
Zhang Guowei. 1988. Formation and Evolution of the Qinling Orogenic Belt[M]. Xi'an:Northwest University Publishing House, 1-192(in Chinese with Englishabstract).
Zhang Guowei and Zhou Dingwu. 1990. The Qinling complex and the Qinling orogenic belt[C]//Liu G H, Zhang S C(eds. ). Geological Memoirs of the Qinling-Daba Mountains(1) Metamorphic Geology. Beijing: Beijing Scientific and Technical Publishing House, 11-24(in Chinese with Englishabstract).
Zhang Guowei, Zhang Zongqing, Dong Yunpeng. 1995. Nature of main tectono-lithostratigraphic units of the Qingling Orogen:Implications for the Tectonic Evolutiong[J]. Acta Petrologica Sinica, 11(2):101-114(in Chinese with Englishabstract). https://www.researchgate.net/publication/268074270_Metallogeny_during_continental_outgrowth_in_the_Columbia_supercontinent_Isotopic_characterization_of_the_Zhaiwa_Mo-Cu_system_in_the_North_China_Craton
Zhang Guowei, Dong Yunpeng, Yao Anping. 1997. The Crustal compositions, structures and tectonic evolution of the Qingling Orogenic belt[J]. Geology of Shaanxi, 15(2):1-14(in Chinese with Englishabstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SXDY199702000.htm
Zhang Guowei, Zhang Benren, Yuan Xuecheng, Xiao Qinghui. 2001. Qingling Orogenic Belt and Continental Dynamics[M]. Beijing:Science Press, 1-885(in Chinese with Englishabstract).
Zhang Zongqing, Liu Dunyi, Fu Guomin. 1994. Study of Isotope Geochronology of Metamorphic Stratigraphy of North Qingling[M]. Beijing:Geological Publishing House, 1-191(in Chinese with English abstract).
陈瑞保, 张延安. 1993.豫西峡河岩群层序及变形特征[J].河南地质, 11(2):104-111.
河南省地质矿产局.1997.河南岩石地层[M].武汉:中国地质大学出版社.
李怀坤, 耿建珍, 郝爽, 张永清, 李惠民.2009.用激光烧蚀多接受器等离子体质谱仪(LA-MC-ICPMS)测定锆石U-Pb同位素年龄的研究[J].矿物岩石地球化学通报, 28(增刊):77.
李怀坤, 朱士兴, 相振群, 苏文博, 陆松年, 周红英, 耿建珍, 李生, 杨锋杰. 2010.北京延庆高于庄组凝灰岩的锆石U-Pb定年研究及其对华北北部中元古界划分新方案的进一步约束[J].岩石学报, 26(7):2131-2140. http://d.old.wanfangdata.com.cn/Periodical/ysxb98201007015
李猛, 王超, 李荣社, 彭岩. 2015.北祁连肃南地区阴沟群形成时代及沉积源区讨论——碎屑锆石U-Pb年龄证据[J].中国地质, 42(3):601-615. http://geochina.cgs.gov.cn/ch/reader/view_abstract.aspx?file_no=20150315&flag=1
陆松年, 李怀坤, 陈志宏, 郝国杰, 周红英, 郭进京, 牛广华, 相振群. 2003.秦岭中新元古代地质演化及对Rodinia超级大陆事件的响应[M].北京:地质出版社, 1-194.
陆松年, 陈志宏, 相振群, 李怀坤, 李惠民, 宋彪. 2006.秦岭岩群副变质岩碎屑锆石年龄谱及其地质意义探讨[J].地学前缘, 13(6):303-310. http://d.old.wanfangdata.com.cn/Periodical/dxqy200606033
裴先治, 王涛, 王洋, 李厚民, 李国光. 1999.北秦岭晋宁期主要地质事件及其构造背景讨论[J].高校地质学报, 5(2):137-147. http://kns.cnki.net/KCMS/detail/detail.aspx?filename=gxdx902.001&dbname=CJFD&dbcode=CJFQ
时毓, 于津海, 徐夕生, 邱检生, 陈立辉. 2009.秦岭造山带东段秦岭岩群的年代学和地球化学研究[J].岩石学报, 25(10):2651-2670. http://d.old.wanfangdata.com.cn/Periodical/ysxb98200910029
万渝生, 刘敦一, 董春艳, 殷小艳. 2011.西峡北部秦岭群变质沉积岩锆石SHRIMP定年:物源区复杂演化历史和沉积、变质时代确定[J].岩石学报, 27(4):1172-1178. http://www.ysxb.ac.cn/ysxb/ch/reader/view_abstract.aspx?flag=1&journal_id=ysxb&file_no=20110421
王涛, 胡能高, 裴先治, 杨家喜, 李伍平. 1997.秦岭杂岩的组成、构造格局及演化[J].地球学报, 18(4):345-351. http://www.cagsbulletin.com/dqxbcn/ch/reader/view_abstract.aspx?file_no=19970402
闫全人, 王宗起, 闫臻, 陈隽璐, 向忠金, 王涛, 张宏远. 2009.秦岭岩群中两类斜长角闪岩的性质和时代及地质意义[J].岩石学报, 25:2177-2194. http://www.ysxb.ac.cn/ysxb/ch/reader/view_abstract.aspx?file_no=20090912
杨力, 陈福坤, 杨一增, 李双庆, 祝禧艳. 2010.丹凤地区秦岭岩群片麻岩锆石U-Pb年龄:北秦岭地体中-新元古代岩浆作用和早古生代变质作用的记录[J].岩石学报, 26(5):1589-1603. http://www.ysxb.ac.cn/ysxb/ch/reader/view_abstract.aspx?file_no=20100523&flag=1
杨经绥, 许志琴, 裴先台, 史仁灯, 吴才来, 张建新, 李海兵, 孟繁聪, 戎合. 2002.秦岭发现金刚石横贯中国中部巨型超高压变质带新证据及古生代和中生代两期深俯冲作用的识别[J].地质学报, 76(4):484-495. http://d.old.wanfangdata.com.cn/Periodical/dizhixb200204007
游振东, 索书田, 韩郁菁, 钟增球, 陈能松. 1991.造山带核部杂岩变质过程与构造解析——以东秦岭为例[M].武汉:中国地质大学出版社, 1-326.
张国伟. 1988.秦岭造山带形成与演化[M].西安:西北大学出版社, 1-192.
张国伟, 周鼎武. 1990. 秦岭杂岩和秦岭造山带[C]//刘国惠等. 秦岭-大巴山地质论文集(一)变质地质[M]. 北京: 北京科学技术出版社, 11-24.
张国伟, 张宗清, 董云鹏.1995.秦岭造山带主要构造岩石地层单元的构造性质及其大地构造意义[J].岩石学报, 11(2):101-114. http://www.ysxb.ac.cn/ysxb/ch/reader/view_abstract.aspx?file_no=19950215
张国伟, 董云鹏, 姚安平.1997.秦岭造山带基本组成与结构及其构造演化[J].陕西地质, 15(2):1-14. http://d.old.wanfangdata.com.cn/Thesis/Y430540
张国伟, 张本仁, 袁学诚, 肖庆辉.2001.秦岭造山带与大陆动力学[M].北京:科学出版社, 1-885.
张宗清, 刘敦一, 付国民. 1994.北秦岭变质地层同位素年代研究[M].北京:地质出版社, 1-191.
-
图(5)
表(1)
计量
- 文章访问数: 2599
- PDF下载数: 1489
- 施引文献: 0