ISSN 1009-6248CN 61-1149/P Bimonthly

Supervisor:China Geological Survey

Sponsored by:XI'an Center of China Geological Survey
Geological Society of China

    • The Core Journals of China
    • The Key Magazine of China Technology
    • CSCD Included Journals
    • Scopus Included Journals
Advance Search
LIANG Guobing, DING Saping, LI Zuochen, et al. Geochronology and Geochemistry of Early Devonian-Late Silurian Mylonitized Quartz Diorites from the Southern Xiaoxigong in the Beishan Aere of Gansu Province and Their Geologic Implications[J]. Northwestern Geology, 2017, 50(1): 249-260.
Citation: LIANG Guobing, DING Saping, LI Zuochen, et al. Geochronology and Geochemistry of Early Devonian-Late Silurian Mylonitized Quartz Diorites from the Southern Xiaoxigong in the Beishan Aere of Gansu Province and Their Geologic Implications[J]. Northwestern Geology, 2017, 50(1): 249-260.

Geochronology and Geochemistry of Early Devonian-Late Silurian Mylonitized Quartz Diorites from the Southern Xiaoxigong in the Beishan Aere of Gansu Province and Their Geologic Implications

More Information
  • Received Date: November 26, 2016
  • Revised Date: December 04, 2016
  • Available Online: July 28, 2022
  • Published Date: March 04, 2017
  • In order to deepen the understanding about the tectonic evolution of Dunhuang land mass, and to understand the tectonic deformation history of the alteration rock type gold depositin Xiaoxigong shear zone before the mineralization, the mylonitized quartz diorite body from the south side of Xiaoxigong gold deposit have been selected to carry out the LA-ICP-MS zircon U-Pb chronology and geochemical studes. In this paper, 24 zircons have been analyzed totally, their Th and U contents range from 46.5×10-6 to 266.4×10-6 and from 196.3×10-6 to 496.3×10-6, respectively, their Th/U ratios vary from 0.24 to 0.53, and their LA-ICP-MS U-Pb ages are (411.3±5.8)Ma (MSWD=2.7), with the formation age of early Devonian.The SiO2 and TiO2 contents of these mylonitized quartz diorites vary from 57.88% to 58.26% and from 0.81% to 0.86% respectively, their σ values range from 1.38 to 1.56, their alkali indexes(NK/A) change from 0.4 to 0.41, showing the features of calc-alkaline rocks.Their aluminum saturations(A/CNK) vary from 0.95 to 0.98, belonging to the subaluminous rock series, with I-type granite characteristics.These mylonitized quartz diorites have weak Eu anomalies, their ΣREE range from 73.85×10-6 to 160.37×10-6, with moderate low ΣREE content. Their ΣLREE/ΣHREE ratios change from 8.3 to 11.25, with the relative loss of HREE. The contents of Ba, Sr and Zr are higher, while the contents of Rb, Th and U are lower. The tectonic setting for these mylonitized quartz diorites is the volcanic arc environment, which is considered as the response of the Dunhuang block the subducted and collised with the Beishan orogenic belt during the Early Paleozoic to Early Late Mesozoic. The obtained dating data suggests that the subduction collision was lasted to the Early Devonian in this area.
  • 梁明宏,张新虎,刘建宏,等.甘肃侵入岩及岩石构造组合[J].甘肃地质,2014,23 (3):1-8.
    LIANG Minghong,ZHANG Xinhu,LIU Jianhong,et al. Intrusive Rock and Petrologic and Tectonic Assemblage in Gansu Province[J].Gansu Geology,2014,23(3):1-8.
    杨合群,李英,李文明,等.北山花岗岩S型/I型空间变化规律及含矿性[J].地球学报,2009,30(5):627-633.
    YANG Hequn,LI Ying,LI Wenming,et al.Spatial Variation Regularity and Ore Potential of S-type and I-type Granites in the Beishan Mountain[J].Acta Geoscientica Sinica,2009,30(5):627-633.
    朱江,吕新彪,彭三国,等.甘肃北山小西弓金矿区石英正长斑岩LA-ICP-MS锆石U-Pb年龄和地球化学特征[J]. 地质通报,2015,34(8):1460-1469.
    ZHU Jiang,Lü Xinbiao,PENG Sanguo,et al.LA-ICP-MS zircon U-Pb geochronology and geochemical charac-teristics of the quartz syenite porphyry in the Xiaoxigong gold deposit and their geological implications[J]. Geological Bulletin of China,2015,34(8):1460-1469.
    赵泽辉,郭召杰,王毅.甘肃北山柳园地区花岗岩类的年代学、地球化学特征及构造意义[J].岩石学报,2007,23(8):1847-1860.
    ZHAO Zehui,GUO Zhaojie,WANG Yi.Geochronology,Geochemical Characteristics and Tectonic Implications of The Granitoids from Liuyuan Area,Beishan,Gansu Province,northwest China[J]. Acta Petrologica,2007,23(8):1847-1860.
    王国强,李向民,徐学义,等.甘肃北山红石山蛇绿岩锆石U-Pb年代学研究及构造意义[J].岩石学报,2014,30(6):1685-1694.
    WANG Guoqiang,LI Xiangmin,XU Xueyi,et al.Ziron U-Pb chronological study of the Hongshishan ophiolite in the Beishan area and their tectonic significance[J]. Acta Petrologica Sinica,2014,30(6):1685-1694.
    刘明强,王建军,代文军.甘肃北山红石山地区马鞍山北花岗岩单颗粒锆石U-Pb年龄及地质意义[J].岩石矿物学杂志,2006,25(6):473-479.
    LIU Mingqiang,WANG Jianjun,DAI Wenjun.The U-Pb age of single-grained zircon from Maanshanbei granite in Hongshishan area of the Beishan orogenic belt,Gansu Province[J].Acta Petrologica et Minerogica,2006,25(6):473-479.
    赵志雄,贾元琴,许海,等.北山交叉沟石英闪长岩锆石LA-ICP-MS U-Th-Pb年龄及构造意义[J].地质学报,2015,89 (7):1210-1218.
    ZHAO Zhixiong,JIA Yuanqin,XU Hai,et al.LA-ICP-MS Zircon U-Pb Age of Quartz Diorite from the Jiaochagou Area in Beishan Orogenic Belt,Inner Mongolia,and Its Tectonic Significance[J].Acta Geologica Sinica,2015,89(7):1210-1218.
    贺振宇,孙立新,毛玲娟,等.北山造山带南部片麻岩和花岗闪长岩的锆石U-Pb定年和Hf同位素:中元古代的岩浆作用与地壳生长[J].科学通报,2015,60(4):389-399.
    HE Zhenyu,SUN Lixin,MAO Lingjuan,et al. Zircon U-Pb and Hf isotopic study of gneiss and granodiorite from the southern Beishan orogenic collage:Mesoproterozoic magmatism and crustal growth[J].Science China Press,2015,60(4):389-399.
    李舢,王涛,童英,等.北山柳园地区双峰山早泥盆世A型花岗岩的确定及其构造演化意义[J].岩石矿物学杂志,2009,28(5):407-422.
    LI Shan,WANG Tao,TONG Ying,et al. Identification of the Early Devonian Shuangfengshan A-type granites in Liuyuan area of Beishan and its implications to tectonic evolution[J].Acta Peteololgica et Mine ralogica,2009,28(5):407-422.
    梅华林,李惠民,陆松年,等.甘肃柳园地区花岗质岩石时代及成因[J].岩石矿物学杂志,1999,1(18):14-17.
    MEI Hualin,LI Huimin,LU Songnian,et al. The Age and Origin of the Liuyuan Granitoid,Northwestern Gansu[J]. Acta Peteololgica et Mine ralogica,1999,1(18):14-17.
    叶晓峰,宗克清,张泽明,等.北山造山带南缘柳园地区新元古代花岗岩的地球化学特征及其地质意义[J].地质通报,2013,32(2-3):307-317.
    YE Xiaofeng,ZONG Keqing,ZHANG Zeming,et al. Geochemistry of Neoproterozoic granite in Liuyuan area of southern Beishan orogenic belt and its geological significance[J].Geological Bulletin of China,2013, 32(2-3):307-317.
    江思宏,聂凤军.北山地区花岗岩类成因的Nd同位素制约[J].地质学报,2006,80(6):826-842.
    JIANG Sihong,NIE Fengjun. Nd-Isotope Constraints on Origin of Granitoids in Beishan Mountain Area[J]. Acta Geologica Sinica,2006,80(6):826-842.
    张文,吴泰然,冯继承,等.甘肃北山西涧泉子富碱高钾花岗岩体的锆石LA-ICP-MS定年及其构造意义[J].岩石矿物学杂志,2010,29(6):719-737.
    ZHANG Wen,WU Tairan,HE Yuankai,et al. LA-ICP-MS zircon U-Pb ages of Xijianquanzi alkali-rich potassium-high granites in Beishan,Gansu Province,and their tectonic significance[J]. Acta Petrologica et Minerogica,2010,29(6):719-737.
    左国朝,何国琦,李红诚,等.北山板块构造及成矿规律[M].北京:北京大学出版社,1990.
    ZUO Guochao,HE Guoqi,LI Hongcheng,et al. Plate tectonics and ore formation in the Beishan Region[M]. Beijing:Peking University Press, 1990.
    龚全胜,刘明强,李海林,等.甘肃北山造山带类型及基本特征[J].西北地质,2002,35(3):28-34.
    GONG Quansheng,LIU Mingqiang,LI Hailing,et al.The type and basic characteristics of Beishan orogenic belt,Gansu[J].Northwestern Geology,2002,35(3):28-34.
    张新虎,刘建宏,徐家乐,等.再论甘肃省的板块构造[J].甘肃地质学报,2005,14(2):1-10.
    ZHANG Xinhu,LIU Jianhong,XU Jiale,et al.Second study on plate tectioncs in Gansu province[J].Acta Geologica Gansu,2005,14(2):1-10.
    李锦轶,杨天南,李亚萍,等.东准噶尔卡拉麦里断裂带的地质特征及其对中亚地区晚古生代洋陆格局重建的约束[J].地质通报,2009,28(12):1817-1826.
    LI Jinyi,YANG Tiannan,LI Yaping,et al.Elogical features of the Karamaili faulting belt,eastern Junggar region,Xinjiang,China and its constraints on the reconstruction of Late Paleozoic ocean-continental framework of the Central Asian region[J]. Geological Bulletin of China,2009,28(12):1817-1826.
    刘明强,龚全胜,梁明宏.甘肃北山地区音凹峡多旋回裂谷带[J].甘肃地质学报,1999,8(2):15-22.
    LIU Ming qiang,GONG Quan sheng,LIANG Ming hong. Yinwaxia Polycyclic Rift zone in Beishan area in Gansu Province[J]. Acta Geologica Gansu,1999,8(2):15-22.
    张新虎,刘建宏,梁明宏,等.甘肃省区域成矿及找矿[M].北京:地质出版社,2013:297-303.
    ZHANG Xinhu,LIU Jianhong,LIANG Minghong,et al. Regional mineralization and prospecting,Gansu Province[M]. Beijing:Geology Press,2013:297-303.
    梁明宏,霍勤知,李海林.1:25万玉门镇幅区调修测主要进展及成果[J].中国地质调查,2014,1(2):7-14.
    LIANG Minghong,HUO Qinzhi,LI Hailin. Main Progress and Achievements in Supplemental Regional Geological Survey of 1:250 000 Yumenzhen Sheet[J]. Geological Survey of China,2014,1(2):7-14.
    王云斌,梁明宏,霍勤知,等.利用变形花岗岩体中的长石矿物进行有限应变测量初探[J].西北地质,2004,37(1):19-24.
    WANG Yunbin,LIANG Minghong,HUO Qinzhi,et al.The study of the limit deformation measurement with deformation feldspar in granite areas[J].Northwestern Geology,2004,37(1):19-24.
    殷勇.甘肃北山花岗岩与金矿成矿作用[J].甘肃地质,2011,20(4):26-34.
    YIN Yong. Gold Metallogenesis and Granite in Beishan Region of Gansu Province[J].Gansu Geology,2011,20(4):26-34.
    杨建国,谢春林,王小红,等. 甘肃北山地区基本构造格局和成矿系列特征[J].地质通报,2012,31(2/3):422-438.
    YANG Jianguo,XIE Chunlin,WAN Xiaohong,et al. Basic tectonic framework and features of metallogenic series in Beishan area,Gansu Province[J].Geological Bulletin of China,2012,31(2/3):422-438.
    陈柏林,吴淦国,杨农,等. 甘肃北山白墩子-小西弓韧性剪切带及其控矿作用[J].地质力学学报,2007,2(13):99-109.
    CHEN Bailin,WU Ganguo,YANG Nong,et al.Baidunzi-Xiaoxigong Ductile Shear Zone and Its Ore-controlling Effect in the Southern Beishan area,Gansu[J]. Journal of Geomechanics,2007,2(13):99-109.
    修群业.甘肃北山地区花岗岩类地球化学特征及大地构造意义[J].前寒武纪研究进展,1999,1(22):31-39.
    XIU Qunye.Geochemical Characteristics and Tectonic Significance of The Granitoids in Beishan Area,Gansu Province[J].Progress In Precambrian Research,1999,1(22):31-39.
    梁明宏,霍勤知,王云斌,等.甘肃1:25万玉门镇幅区域地质调查报告[R].2005.
    LIANG Minghong,HUO Qingzhi,WANG Yunbin,et al. Regional Geological Investigation of 1:250 000 Yumen site in Gansu Province[R].2005.
    冯继承,张文,吴泰然,等.甘肃北山桥湾北花岗岩体的年代学、地球化学及其地质意义[J].北京大学学报(自然科学版),2012,30(1):61-70.
    FENG Jicheng,ZHANG Wen,WU Tairan,et al. Geochronology and Geochemistry of Granite Pluton in the North of Qiaowan, Beishan Mountain, Gansu Province, China, and Its Geological Significance[J]. Acta Scientiarum Naturalium Universitatis Pekinensis,2012,30(1):61-70.
    蒲万峰,严镜,汪宏涛,等.甘肃金塔县碱凹井岩体岩石地球化学特征及构造环境分析[J].新疆地质,2015,33(2):263-269.
    PU Wanfeng,YAN Jing,WANG Hongtao,et al. Tectonic Setting and Geochemical Characteristics of the Jianaojing Pluton in Jinta County,Gansu[J].Xinjiang Geology,2015,33(2):263-269.
    张文,冯继承,郑荣国,等.甘肃北山音凹峡南花岗岩体的锆石LA-ICP MS定年及其构造意义[J].岩石学报,2011,27(6):1649-1661.
    ZHANG Wen,FENG Jicheng,ZHENG Rongguo,et al.LA-ICP MS zircon U-Pb ages of the granites from the south of Yin'aoxia and their tectonic significances[J].Acta Petrologica Sinica,2001,27(6):1649-1661.
    贺振宇,宗克清,姜洪颖,等.北山造山带南部早古生代构造演化:来自花岗岩的约束[J].岩石学报,2014,30(8):2324-2338.
    HE Zhenyu,ZONG Keqing,JIANG Hongying,et al. Early Paleozoic tectonic evolution of the southern Beishan orogenic collage:Insights from the granitoids[J]. Acta Petrologica Sinica,2014,30(8):2324-2338.
  • Related Articles

Catalog

    Article views (2734) PDF downloads (2669) Cited by()

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return