Discussion on the Relationship Between the Longwangshan Granite Mass and the Huashixia W-Mo Deposit in the Transitional Belt of Northdern-Central Qilian
-
摘要: 花石峡钨钼矿位于青海省东部的互助县，大地构造位置处于北祁连造山带南缘，为典型的矽卡岩型钨钼矿，其与岩浆侵入活动有关。利用LA-ICP-MS锆石U-Pb定年方法对花石峡钨钼矿区外围二长花岗岩体进行了年代学定年，获得（418.2±1.1） Ma U-Pb年龄。岩石地球化学特征显示为高钾钙碱性系列，轻稀土元素富集，重稀土元素较亏损，δEu为0.50~0.88，具弱负Eu异常。微量元素富集大离子亲石元素，而明显亏损高场元素和重稀土元素。地球化学特征表明，龙王山花岗岩是板块碰撞期阶段的产物，属I型花岗岩，岩浆来源于下地壳。龙王山花岗岩同位素的获取，表明花石峡钨钼矿的成矿时代与岩浆侵入时间相近，为晚志留世。龙王山二长花岗岩为该矿提供了热源和物源。Abstract: The Huashixia tungsten-molybdenum deposit is located in Huzhu County, Eastern Qinghai Province, which is tectonically ocurred in the southern margin of North Qilian orogenic belt. This deposit belongs to a typical skarn-type W-Mo deposit, which is related to the magma intrusion. In this paper, the LA-ICP-MS zircon U-Pb dating method has been used to study the chronology of monzonite granites from the peripheral area of the Huashixia W-Mo deposit, obtained an U-Pb age of (418.2±1.1)Ma. The geochemical results show that these monzonite granites belong to high potassium cal-alkaline series, with LREE enrichment and HREE loss. Their δEu values vary from 0.50 to 0.88, with weak negative Eu anomaly. The trace element results suggest that these granites are enriched in large ion lithotropic elements, but depleted in high field elements and heavy rave earth elements. Geochemical characteristics indicate that the Longwangshan granite was the product of plate collision and sourced from lower crust, belonging to I-type granite. The isotopic results of the Longwangshan granite indicate that the ore-forming period of the Huashixia W-Mo deposit is similar to the ones of magmatic intrusion, and both of them were formed in Late Silurian Epoch. The Longwangshan monzonite granite had provided the heat and material sources for the formation of the Huashixia deposit.
-
-
张小军,陶明信,董新,等.北祁连地区新构造运动与成矿作用[J].西北地质,2003,36(4):8-15. ZHANG Xiaojun, TAO Mingxin, DONG Xin,et al. Neotectonic movement and mineralization of the North Qilian area[J]. North Western Geology,2003,36(4):8-15.
张新虎,苟国朝,展积宝.北祁连地区主要金属矿床成矿系列及区域成矿作用[J].地球科学进展,1997,331-339. ZHANG Xinhu,GOU Guochao,ZHAN Jibao.Metallogenic Series of main ore deposits and Regional metallogeny in north Qilian mountains[J]. Advance in Earth Sciences, 1997,331-339.
肖序常,陈国铭,朱志直.祁连山古蛇绿岩的地质构造意义[J].地质学报, 1978,54(1):287-295. XIAO Xuchang,CHEN Guoming,ZHU Zhizhi.Qilian mountain ancient ophiolite tectonic significance[J].Acta Geologica Sinica,1978,52(4):287-295.
李春昱,刘仰文、朱宝清,等.秦岭及祁连山构造发展史[A]. 国际交流地质学论文集[C].北京:地质出版社,1978,(1):74-187. LI Chunli,LIU Yangwen, ZHU Baoqing,et al.In qinling and qilian mountain teconic development histoty[A]. International Communication geological Academic papers[C]. Beijing:Geological Publishing House, 1978,(1):174-187.
刘宝山,蔡进福,雷晓清,等.北祁连玉龙滩地区寒武纪花岗岩地质地球化学特征[J].西北地质,2016,49(4):43-50. LIU Baoshan,CAI Jinfu,LEI Xiaoqing, et al.Discovery and geological Significance of early Permian mafic dike Intrusive into tuolai paleo-proterozic rockin yulongtan region[J].North western Geology, 2016,49(4):43-50.
左国朝,刘寄陈.北祁连早古生代大地构造演化[J].地质科学,1987,(1):174-187. ZUO Guochao,LIU Jichen.The evolution of tectonic of early Paleozoic in north qilian range,China[J].Chinese Journal of Geology,1987,(1):174-187.
陈化奇.北祁连冷龙岭地区宁缠河花岗岩体的地球化学特征及大地构造意义[J].甘肃地质,2007,16(4):37-42. CHEN Huaqi.Geochemical features of ningchanhe granite body and its'tectonic significance in lenglongling of north qilian[J].Gansu Geology,2007,16(4):37-42.
杨钟堂,肖思云,肖朝阳,等.祁连成矿带钨矿成矿特征及其区域找矿标志[J].中国地质,2004,31(3):301-307. YANG Zhongtang,XIAO Siyun,XIAO Chaoyang, et al.Minerogenic features of tungsten deposits in the Qilian metallogenic belt and regional ore indications[J]. Geology in China,2004,31(3):301-307.
张作衡,毛景文,杨建民,等.北祁连加里东造山带塔儿沟夕卡岩-石英脉型钨矿床地质及成因[J].矿床地质,2002,21(2):200-211. ZHANG Zuoheng, MAO Jingwen, YANG Jianmin,et al.Geology and Genesis of Ta'ergou Skarn_Quartz Vein Type Tungsten Deposit in North Qilian Caledonian Orogen, Northwest China[J].Mineral Depostits,2002, 21(2):200-211.
青海省地质矿产局.青海省岩石地层(全国地层多重划分对比研究)[M]. 武汉:中国地质大学出版社,1997:94-95. Burdau of Geology and Mineral Resources of Qinghai Provicne.Rock strata in Qinghai province(Multiple stratigraphic division and correlation study in china)[M]. Wuhan:China University of Geosciences Press,1997:94-95.
张雪亭,杨生德,杨站君,等.青海省区域地质概论[M].北京:地质出版社, 2007. ZHANG Xueting,YANG Shengde,YANG Zhanjun, et al. An introduction to regional geology of Qinghai Province[M].Beijing:Geological Publshing House,2007.
梁细荣,李献华,刘永康,等.激光探针等离子体质谱法(LAM-ICPMS)用于年轻锆石U-Pb定年[J].地球化学,2002,29(1):1-5. LIANG Xirong,LI Xianhua,LIU Yongkang,et al.U-Pb istopic dating of young Zircons by laser ablation microprobe inductively coupled plansma mass spectrometly(LAM-ICPMS)[J].Geochimica,2002,29(1):1-5.
吴元保,郑永飞.锆石成因矿物研究及其对U-Pb年龄解释的制约[J].科学通报,2004,49(16):1589-1604. WU Yunbao,ZHENG Yongfei.Genesis of zicon and its constrainton interpretation of U-Pb age[J].Chineese Science Bulletin,2004,49(16):1589-1604.
吴锁平,王梅英,戚开静.A型花岗岩研究现状及其述评[J]. 岩石矿物学杂志,2007,26(1):57-66. WU Suoping,WANG Meiying,QI Kaijing. Present situation of researches on A-type granites:a review[J].Acta peteologica et Mineralogical,2007,26(1):57-66.
贾群子,杨钟堂,肖钟阳,等.祁连成矿带成矿规律和找矿方向[J].西北地质,2006,39(2):96-113. JIA Qunzi,YANG Zhongtang,XIAO Zhongyang, et al.Metallogenic Characteristics and Prospecting Target in the Qilian Metallogenic Zone[J].Northwestern Geology, 2006,39(2):96-113.
李献华,李武显,李正详.再论南岭燕山早期花岗岩的成因类型与构造意义[J].科学通报,2007,52(9):981-991. LI Xianhua,LI Wuxian,LI Zhengxian.Further discussion on genetic type and tectonic significance of early yanshan granites in nanling Mountians[J].Chineese Science Bulletin, 2007,52(9):981-991.
刘晓煌,孙柏年,屈文俊,等.北祁连山西段西柳沟钨钼矿的Re-Os定年及地质意义[J].岩石学报,2007,32(10):2434-2442. LIU Xiaohuang,SUN Bai nian,QU Wenjun,et al.Re-Os dating of molybdenite in Xiliugou W-Mo deposit in western part of north Qilian Mountains andits geological significance[J].Acta Petrologica Sinica,2007,32(10):2434-2442.
刘晓煌,邓军,孙兴丽,等.北祁连西段干巴河脑钼钨矿床辉钼矿Re-Os测年及C-H-O-S同位素特征[J].吉林大学学报(地球科学版),2010,40(4):845-851. LIU Xiaohuang,DENG Jun,SUN Xingli, et al. Molybdenite Re-Os Dating and C-H-O-S Isotopic Characteristics of the Ganbahenao Mo-W Deposit in Western Segment of North Qilian Mountains[J]. Journal of Jilin University(Earth Science Edition),2010,(40)4:845-851.
张旗,郭原生,王岳明,等.祁连山地区镁铁超镁铁岩的多样性[J].地球科学进展,1997,12(4):324-330. ZHANG Qi GUO Yuansheng WANG Yueming,et al. YuemingThe versity of ultramafic rocks in the qilian mountains area[J]. Advance In Earth Sciences, 1997,12(4):324-330.
夏林圻,夏祖春,任有祥,等.祁连山及邻区火山作用与成矿[M].北京:地质出版社,1998,1-55. XIA Linqi XIA Zuchua REN Youxian,et al.Volcanism and mineralization in the Qilian Mountains and its adjacent ares[M].Beijinag:Geological Publishing House,Beijing,1998,1-55.
贾群子,杨钟堂,肖朝阳,等.祁连成矿带成矿区划和找矿潜力[J]. 西北地质,2002,35(4):86-100. JIA Qunzi,YANG Zhongtang,XIAO Chaoyang, et al. Subdivision of Qilian metallogenic belt and its prospecting potentiality[J]. Northwestern Geology, 2002,35(4):86-100.
安涛,周继强.甘肃小柳沟钨多金属矿地质特征及成矿模式[J].甘肃地质学报,2002,11(2):54-66. AN Tao,ZHOU Jiqiang.W-multimetal ore deposit Ceological character ore deposit Ore genesis Metallogenic model[J]. Acta Geologica Gansu,2002,11(2):54-66.
毛景文,张作衡.北祁连山小柳沟钨矿床中辉相矿Re一05年龄测定及其意义[J].地质论评,1999,45(4):412-417. MAO Jingwen,ZHANG Zuoheng.Re-Os Age Dating of Molybdenites in the Xiaoliugou Tungsten DePosit in the Northern Qilian Mountains and Its Signifeanee[J]. Geological Review,1999,45(4):412-417.
汤中立,白云来.北祁连造山带两种构造基底岩块及成矿系统[J].甘肃地质学报,2001,(10)9:1-11. TANG Zhongli,BAI Yunlai.He Two Types of the tectonic foundation block and its metallogenit systems in the northern Qilianshan orogenic belt[J]. Acta Geologica Gansu,2001,(10)9:1-11.
COLLINS W J,BEAMS S D,WHITE A J R,et al.Nature and origin of-type granites with particular reference to southeast Australia[J]. Contributions to Mineralogy and pertrology, 1982,80(2):189-200.
WILSONB M.Igneous Petrogenesis a global tectonic approach[M].Springer, 1989.
计量
- 文章访问数: 2158
- HTML全文浏览量: 0
- PDF下载量: 2054
下载:
