Geochemical Characteristics and Geological Significance of Late Triassic Intrusive Rocks in the Middle Reaches of Naling Guole River, Qinghai Province
-
摘要: 那陵郭勒河中游位于东昆仑西段祁漫塔格地区，分布着大量的花岗岩。对该地区晚三叠世侵入岩的研究有助于认识东昆仑造山带印支期构造-岩浆演化历史。对研究区内花岗岩进行了岩石学、年代学及岩石地球化学分析。分析结果表明，研究区花岗闪长岩和二长花岗斑岩锆石LA-ICP-MS U-Pb年龄分别为（225.7±1）Ma、（213.74±1）Ma，为晚三叠世岩浆活动产物。岩石地球化学分析结果显示，该地区晚三叠世侵入岩属高钾钙碱性系列，饱和铝指数显示为偏铝质到过铝质，富集Rb、Th、K等大离子亲石元素和轻稀土元素，明显亏损Nb、P、Ti等高场强元素。花岗岩具有I型花岗岩特征，具有板块俯冲阶段的特征。通过分析认为岩浆岩形成于板块碰撞前的火山弧环境中。Abstract: The middle reaches of Naling Guole River is located in the western part of Qimantage area in East Kunlun Mountains, where a large number of granites are distributed. The study of the Late Triassic intrusive rocks in this area is of help to understand the Indosinian tectono-magmatic evolution history of the East Kunlun orogenic belt. Petrological, chronological and geochemical analyses of granites in the study area were carried out. The results show that the zircon LA-ICP-MS U-Pb ages of granodiorite and monzogranite porphyry in the study area are (225.7+1) Ma and (213.74+1) Ma respectively, which are the products of late Triassic magmatism. The results of petrogeochemical analysis show that the Late Triassic intrusive rocks in this area belong to the high-K calc-alkaline series. The saturated aluminium index shows that they are meta-aluminous to peraluminous, enriched with large ion lithophile elements such as Rb, Th, K and light rare earth elements, and obviously depleted with high field strength elements such as Nb, P and Ti. Granite is characterized by highly differentiated I-type granite and plate subduction stage. The analysis shows that the magmatite formed in the volcanic arc environment before plate collision.
-
Keywords:
- granite /
- geochemistry /
- Late Triassic /
- middle reaches of the Naling Guole River /
- East Kunlun
-
-
陈静,谢智勇,李彬,等.东昆仑拉陵灶火地区泥盆纪侵入岩成因及其地质意义[J].矿物岩石,2013, 33(02):26-34. CHEN Jing,XIE Zhiyong,LI Bin,et al. Petrogenesis of Devonian Intrusive Rocks in Lalingzaohuo Area,Eastern Kunlun,and its Geological Significance[J].Journal of Mineralogy and Petrology, 2013,33(02):26-34.
丰成友,王松,李国臣,等.青海祁漫塔格中晚三叠世花岗岩:年代学、地球化学及成矿意义[J].岩石学报,2012,28(02):665-678. FENG Chengyou,WANG Song,LI Guochen, et al. Middle to Late Triassic granitoids in the Qimantage area,Qinghai Province,China:Chronology,geochemistry and metallogenic significances[J].Acta Petrologica Sinica,2012,28(2):665-678.
郭正府,邓晋福,许志琴,等.青藏东昆仑晚古生代末-中生代中酸性火成岩与陆内造山过程[J].现代地质,1998,(03):51-59. GUO Zhengfu,DENG Jinfu,XU Zhiqin,et al. Late Palaeozoic-mesozoic Intracontinental Orogenic Process and Intermedate-acidic Igneous Rocks from the Eastern Kunlun Mountains of Northwestern China[J].Geoscience, 1998,(03):51-59.
何成,王力圆,田立明,等.东昆仑哈拉森地区花岗岩类岩石成因及地质意义[J].地球科学,2018,43(04):1207-1221. HE Cheng,WANG Liyuan,TIAN Liming, et al. Petrogenesis and Geological Implications of Granitoids from Halasen,East Kunlun[J].Earth Science, 2018,43(04):1207-1221.
李昌年.构造岩浆判别的地球化学方法及其讨论[J].地质科技情报,1992,(03):73-84. LI Changnian.A Geochemical Method for Tectonomagmatic Discrimination[J].Geological Science and Technology Information,1992,(03):73-84.
李怀坤,耿建珍,郝爽,等.用激光烧蚀多接收器等离子体质谱仪(LA-MC-ICPMS)测定锆石U-Pb同位素年龄的研究[J].矿物学报,2009,29(S1):600-601. LI Huaikun,GENG Jianzhen,HAO Shuang, et al. Study on zircon U-Pb dating by LA-ICP MS[J].Acta Mineralogica Sinica,2009,29(S1):600-601.
李金超,杜玮,孔会磊,等.青海省东昆仑大水沟金矿英云闪长岩锆石U-Pb测年、岩石地球化学及其找矿意义[J].中国地质,2015,42(03):509-520. LI Jinchao,DU Wei,KONG Huilei,et al. Zircon U-Pb dating and geochemical characteristics of the tonalite in the Dashuigou gold deposit of Eastern Kunlun Mountains,Qinghai Province[J],Geology in China, 2015,42(03):509-520.
马昌前,熊富浩,尹烁,等.造山带岩浆作用的强度和旋回性:以东昆仑古特提斯花岗岩类岩基为例[J].岩石学报,2015,31(12):3555-3568. MA Changqian,XIONG Fuhao,YIN Shuo,et al. Intensity and cyclicity of orogenic magmatism:An example from a Paleo-Tethyan granitoid batholith,Eastern Kunlun,northern Qinghai-Tibetan Plateau[J].Acta Petrologica Sinica,2015,31(12):3555-3568.
莫宣学,罗照华,邓晋福,等.东昆仑造山带花岗岩及地壳生长[J].高校地质学报,2007,49(03):403-414. MO Xuanxue,LUO Zhaohua,DENG Jinfu,et al. Granitoids and Crustal Growth in the East-Kunlun Orogenic Belt[J].Geological Journal of China Universities,2007,49(03):403-414.
王秉璋,陈静,罗照华,等.东昆仑祁漫塔格东段晚二叠世-早侏罗世侵入岩岩石组合时空分布、构造环境的讨论[J].岩石学报,2014,30(11):3213-3228. WANG Bingzhang,CHEN Jing,LUO Zhaohua,et al. Spatial and temporal distribution of Late Permian-Early Jurassic intrusion assemblages in eastern Qimantag,East Kunlun,and their tectonic settings[J].Acta Petrologica Sinica, 2014,30(11):3213-3228.
徐博,李海宾,南燕云,等.祁漫塔格山阿格腾地区晚三叠世火成岩LA-MC-ICP-MS锆石U-Pb年龄、地球化学特征及构造意义[J].地质论评,2019,65(02):353-369. XU Bo,LI Haibin,NAN Yanyun,et al. LA-MC-ICP-MS Zircon U-Pb ages,geochemical characteristics and tectonic significance of the Late Triassic igneous rocks in Ageteng area,Qimantage Mountains[J].Geological Review, 2019,65(02):353-369.
鄢明才,迟清华,顾铁新,等.中国火成岩化学元素的丰度与分布[J].地球化学,1996,(05):409-424. YAN Mingcai,CHI Qinghua,GU Tiexin,et al. Abundance and Distribution of Chemical Elements of Igneous Rocks in China[J]. Geochimica,1996,(05):409-424.
迟清华.岩石化学元素丰度在地球化学块体研究中的意义[J].物探与化探,2003,27(6):428-444. CHI Qinghua.The Significance of Element Abundances of Rocks in the Study of Geochemical Blocks[J].Geophysical & Geochemical Exploration,2003,27(6):428-444.
袁万明,莫宣学,喻学惠,等.东昆仑印支期区域构造背景的花岗岩记录[J].地质论评,2000,(02):203-211. YUAN Wanming, MO Xuanxue, YU Xuehui,et al. Geological records of the regional tectonic environments during the IndoChinese period within granites in the East-Kunlun[J].Geological Reviews, 2000,(02):203-211.
赵明福,李成福,史连昌,等.青海省拉陵高里河一带中三叠世花岗闪长岩地球化学特征及其意义[J].西北地质,2017,50(03):12-21. ZHAO Mingfu,LI Chengfu,SHI Lianchang,et al. Petrochemical Characteristics and Geological Significance of Middle Triassic Granodiorites from Lalinggaoli River Area in Qinghai[J].Northwestern Geology, 2017,50(03):12-21.
陈加杰,付乐兵,魏俊浩,等.东昆仑沟里地区晚奥陶世花岗闪长岩地球化学特征及其对原特提斯洋演化的制约[J].地球科学,2016,41(11):1863-1882. CHEN Jiajie,FU Lebing,WEI Junhao,et al. Geochemical Characteristics of Late Ordovician Granodiorite in Gouli Area,Eastern Kunlun Orogenic Belt,Qinghai Province:Implications on the Evolution of Proto-Tethys Ocean[J].Earth Science, 2016,41(11):1863-1882.
张旗,金惟俊,李承东,等.花岗岩与地壳厚度关系探讨[J].大地构造与成矿学, 2011,35(2):259-269. ZHANG Qi,JIN Weijun,LI Chengdong,et al. Granitic Rocks and their Formation Depth in the Crust[J]. Geotectonica et Metallogenia,2011,35(2):259-269.
王松,丰成友,李世金,等.青海祁漫塔格卡尔却卡铜多金属矿区花岗闪长岩锆石SHRIMP U-Pb测年及其地质意义[J].中国地质,2009,36(01):74-84. WANG Song,FENG Chengyou,LI Shijin,et al. Zircon SHRIMP U-Pb dating of granodiorite in the Kaerqueka polymetallic ore deposit,Qimantage Mountain,Qinghai Province,and its geological implications[J]. Geology in China. 2009,36(01):74-84.
刘云华,莫宣学,喻学惠,等.东昆仑野马泉地区景忍花岗岩锆石SHRIMPU-Pb定年及其地质意义[J].岩石学报,2006,(10):2457-2463. LIU Yunhua,MO Xuanxue,YU Xuehui, et al. Zircon SHRIMP U-Pb dating of the Jingren granite,Yemaquan region of the east Kunlun and its geological significance[J].Acta Petrologica Sinica, 2006,(10):2457-2463.
邱家骧,林景仟.岩石化学[M].北京:地质出版社,1991:1-276. QIU Jiaxiang, LIN Jingqian. Petrochemistry[M]. Beijing:Geological Publishing House,1991:1-276(in Chinese without English abstract).
刘长财,周春波,杨晓刚,等.青海省格尔木市浑德伦地区J46E021011、J46E021012两幅1:5万区域地质矿产调查报告[R].西宁:青海省核工业地质局,2015. Sun S S,McDonough W F.Chemical and isotopic systematics of oceanic basalt:Implications for mantle composition and process[C]//Saunders A.D, Norry M.J(eds.). Magmatism in the Ocean Basins. Spc. Publ. Geol. Soc. Lond., 1989, 42:313-345.
Taylor S R, McLennan S M. The geochemical evolution of the continental crust[J]. Reviews of Geophysics, 1995,33 (2):241-165.
Rudnick L R,Fountain M D. Nature and composition of the continental crust:A lower crustal perspective[J]. Reviews of Geophysics, 1995, 33:267-309.
Maniar P D,Piccoli P M. Tectonic discrimination of granitoids[J]. Geological Society of America Bulletin, 1989,101:635-643.
Pearce J A,Harris N B W,Tindle A G. Trace element discrimination diagrams for the tectonic interpretation of granitic rocks[J].Journal of Petrology,1984,25:956-983.
Rickwood P C.Boundary lines within petrologic diagrams which use oxides of major and minor elements[J].Lithos, 1989,22:247-263.
Whalen J B,Currie K L,Chappell B W. A-type granites:Geochenical characteristics, discrimination and petrogenesis[J].Contributions to Mineralogy and Petrology, 1987,95(4):407-419.
Wilson M. Igneous Petrogenesis[M]. London:Unwin Hyman, 1989,1-464.
Chappell B W,Stephens W E. Origin of infracrustal (I-type) granite magmas[J]. Royal Society of Edinburgh Transactions:Earth Science, 1988,79(2~3):71-86.
Xu Xisheng,Qiu Jiansheng.Igneous Petrology[M]. Beijing:Science Press, 2010,215-220(in Chinese without English abstract).
-
期刊类型引用(3)
1. 罗培麒 ，付勇 ，唐波 ，姚兰 ，刘国栋 ，潘忠飞 ，龙珍 ，刘阳 . 中国镓矿分布规律、成矿机制及找矿方向. 地球学报. 2023(04): 599-624 . 
百度学术
2. 杨旭，刘志臣，秦先进，肖林，陈磊，李隆富，汪洋. 黔北煤田吴家寨地区晚二叠世煤层地球化学特征及聚煤环境分析. 贵州地质. 2021(03): 299-308 . 百度学术
3. 张文斌，何碧，陶刚，赵飞，王宁祖，杨珍，张志玺，孙平原. 黔北新仁地区上二叠统龙潭组煤质地球化学特征及聚煤规律. 西北地质. 2020(04): 51-65 . 本站查看
其他类型引用(3)
计量
- 文章访问数: 1834
- HTML全文浏览量: 6
- PDF下载量: 1413
- 被引次数: 6
下载:
