Journal of Jilin University(Earth Science Edition) ›› 2020, Vol. 50 ›› Issue (3): 675-693.doi: 10.13278/j.cnki.jjuese.20180227

   

Petrological and Geochemical Evidence of Anatexis Collapse in Continental Orogenic Belt: Taking Anatectite of North Dabie Terrain as an Example

Wang Deyuan1, Xu Haijin2, Wang Pan2, Jia Min1, Gao Zhandong1   

  1. 1. Guizhou Institute of Mountain Resources, Guiyang 550001, China;
    2. School of Earth Sciences, China University of Geosciences, Wuhan 430074, China
  • Received:2018-08-28 Published:2020-05-29
  • Supported by:
    Supported by National 13th Five-Year Key R & D Program (2016YFC0502606),Guizhou Academy of Sciences Ability Enhancement Project for Innovative Talent Teams (QIAN Academy of Sciences Talents[2019] 08) and Youth Fund Project of Guizhou Academy of Sciences (QIAN Academy of Sciences J-Word[2019]No.09)

PDF (PC)

275

Abstract: North Dabie terrain (NDT) is located in the core of Dabie orogenic belt, where a large number of migmatites were formed during the collapse of orogen. It is of great significance to understand the formation and evolution of Dabie orogenic belt. The protolith of NDT migmatites are TTG (D) rocks generated from the anatexis induced by dehydration and melting of biotite and amphibolite. The plagioclase-rich leucosome produced in the bedding with Pl+Qtz+Bi±Kfs±Hbl is its major mineral composition. The pegmatite veins or block masses are rich in K-feldspar-rich leucosome with Kfs+Qtz±Pl±Bi±Hbl as its major mineral composition. The melanosome is a crystalloblastic structure with Hbl+Bi+Pl+Qtz±Cpx as its major mineral composition. The amphibolite and biotite in melanosome usually have directional alignment and distinct melting corrosion structures. The main leucocratic minerals in the melanosome are plagioclase and quartzes, indicating the residual products of partial melting. The whole-rock geochemistry shows that alkali metal elements Na, K, large ion lithophile elements Ba, K, La, and LREE etc. have the priority of entering into the acid melt; however, the compatible elements and middle-high rare earth elements remain in the restite minerals. The leucosomes have the same right deviation REE patterns as that of the granitoids, rich in LREE and loss of HREE, but have a large positive Eu anomaly with the ratios of δEu ranging from 2.48 to 6.55; while the granite is on the contrary, the content of the frame structure composed of the large-grain plagioclases is apparently higher than the normal granite melt, which indicates that the leucosomes are more likely the product of the early crystallization of the melts.

Key words: North Dabie terrain, migmatite, anatexis, collapse of orogen, petrological, geochemical

CLC Number: 

  • P588.12
[1] Ma C Q, Yang K G, Ming H L, et al. The Timing of Tectonic Transition from Compression to Extension in Dabieshan:Evidence from Mesozoic Granites[J]. Science China:Series D, 2004,47:453-462.
[2] 邓晋福. 中国大陆根-柱构造:大陆动力学的钥匙[M]. 北京:地质出版社, 1996. Deng Jinfu. China Mainland Root-Column Structure:Key to Continental Dynamics[M]. Beijing:Geological Publishing House, 1996.
[3] Vanderhaeghe O, Teyssier C. Crustal-Scale Rheological Transitions During Late-Orogenic Collapse[J]. Tectonophysics, 2001, 335(1):211-228.
[4] Wu Yuanbao, Zheng Yongfei, Zhang Shaobing, et al. Zircon U-Pb Ages and Hf Isotope Compositions of Migmatite from the North Dabie Terrane in China:Constraints on Partial Melting[J]. Journal of Metamorphic Geology, 2007, 25(9):991-1009.
[5] Brown M. Crustal Melting and Melt Extraction, Ascent and Emplacement in Orogens:Mechanisms and Consequences[J]. Journal of the Geological Society, 2007, 164(4):709-730.
[6] Sawyer E W. Melt Segregation in the Continental Crust:Distribution and Movement of Melt in Anatectic Rocks[J]. Journal of Metamorphic Geology, 2001, 19(3):291-309.
[7] Xu H, Ma C, Zhang J, et al. Early Cretaceous Low-Mg Adakitic Granites from the Dabie Orogen, Eastern China:Petrogenesis and Implications for Destruction of the Over-Thickened Lower Continental Crust[J]. Gondwana Research, 2013, 23(1):190-207.
[8] He Y, Li S, Hoefs J, et al. Post-Collisional Granitoids from the Dabie Orogen:New Evidence for Partial Melting of a Thickened Continental Crust[J]. Geochimica et Cosmochimica Acta, 2011, 75(13):3815-3838.
[9] Xu H, Ma C, Ye K. Early Cretaceous Granitoids and Their Implications for the Collapse of the Dabie Orogen, Eastern China:SHRIMP Zircon U-Pb Dating and Geochemistry[J]. Chemical Geology, 2007, 240(3):238-259.
[10] 吴元保,唐俊,张少兵,等. 北大别两期混合岩化作用:SHRIMP锆石U-Pb年龄证据[J]. 科学通报, 2007, 52(8):939-944. Wu Yuanbao, Tang Jun, Zhang Shaobing, et al. Two Stages of Mixed Diagenesis in the North Dabie Belt:Evidence of the U-Pb Age of SHRIMP Zircon[J].China Science Bulletin, 2007, 52(8):939-944.
[11] 王水炯. 俯冲陆壳的折返历史及深熔作用和俯冲过程Mg同位素地球化学行为[D]. 北京:中国地质大学(北京), 2013. Wang Shuijiong. Reentry History of Subducted Continental Crust, Anatexis and the Geochemical Behavior of Mg Isotopes During Subduction[D]. Beijing:China University of Geosciences (Beijing), 2013.
[12] Wang J H, Sun M, Deng S X. Geochronological Constraints on the Timing of Migmatization in the Dabie Shan, East-Central China[J]. European Journal of Mineralogy, 2002, 14(3):513-524.
[13] 邓尚贤,王江海,孙敏,等. 湖北省罗田凤凰关混合岩浅色体的类型及其锆石U-Pb年龄[J]. 地球化学, 1997,26(2):75-86. Deng Shangxian, Wang Jianghai, Sun Min, et al. Migmatite Leucosomes Type and Age of Zircon U-Pb in Fenghuangguan of Luotian Hubei Province[J]. Geochemistry, 1997,26(2):75-86.
[14] Xu H J, Zhang J F. Anatexis Witnessed Post-Collisional Evolution of the Dabie Orogen, China[J]. Journal of Asian Earth Sciences, 2017, 145:278-296.
[15] Xu H, Zhang J. Zircon Geochronological Evidence for Participation of the North China Craton in the Protolith of Migmatite of the North Dabie Terrane[J]. Journal of Earth Science, 2018(1):1-13.
[16] 吴元保,陈道公,郑永飞,等. 北大别漫水河混合岩化片麻岩中锆石微区微量元素特征及其地质意义[J]. 岩石学报, 2004, 20(5):1041-1050. Wu Yuanbao, Chen Daogong, Zheng Yongfei, et al. Microelement Characteristics and Geological Significance of Zircon Micro-Area in Mixed Lithologic Gneiss in Manshuihe of North Dabie[J]. Acta Petrologica Sinica, 2004, 20(5):1041-1050.
[17] 李曙光,何永胜,王水炯. 大别造山带的去山根过程与机制:碰撞后岩浆岩的年代学和地球化学制约[J]. 科学通报, 2013,58(23):2316-2322. Li Shuguang, He Yongsheng, Wang Shuijiong. Process and Mechanism of Mountain-Root Removal of the Dabie Orogen:Constraints from Geochronology and Geochemistry of Post-Collisional Igneous Rocks[J]. China Science Bulletin, 2013,58(23):2316-2322.
[18] Zhang C, Holtz F, Koepke J, et al. Decompressional Anatexis in the Migmatite Core Complex of Northern Dabie Orogen, Eastern China:Petrological Evidence and Ti-in-Quartz the Rmobarometry[J]. Lithos, 2014, 202/203(4):227-236.
[19] 曾令森,李海兵,许志琴,等. 混合岩中浅色体的有限迁移及其对变形分解的影响[J]. 地质学报, 2004,78(6):752-757. Zeng Lingsen, Li Haibing, Xu Zhiqin, et al. Limited of Leucosome in a Migmatite and Effects of Progressive Partial Melting on Strain Partitioning[J]. Acta Geologica Sinica, 2004,78(6):752-757.
[20] Solar G S, Brown M. Petrogenesis of Migmatites in Maine, USA:Possible Source of Peraluminous Leucogranite in Plutons?[J]. Journal of Petrology, 2001, 42(4):789-823.
[21] Milord I, Sawyer E W, Brown M. Formation of Diatexite Migmatite and Granite Magma During Anatexis of Semi-Pelitic Metasedimentary Rocks:An Example from St. Malo, France[J]. Journal of Petrology, 2001, 42(3):487-505.
[22] Otamendi J E, Patiño Douce A E. Partial Melting of Aluminous Metagreywackes in the Northern Sierra de Comechingones, Central Argentina[J]. Journal of Petrology, 2001, 42(9):1751-1772.
[23] Xu H, Ma C, Zhang J. Generation of Early Cretaceous High-Mg Adakitic Host and Enclaves by Magma Mixing, Dabie Orogen, Eastern China[J]. Lithos, 2012, 142/143:182-200.
[24] 崔建军, 王艳红, 郑光高, 等. 大悟杂岩的形成和抬升时代及其地质意义[J]. 吉林大学学报(地球科学版), 2017, 47(1):139-153. Cui Jianjun, Wang Yanhong, Zheng Guanggao, et al. The Timing of the Formation and Exhumation of the Dawu Complex in West Dabie Orogen, East China, and Its Geological Significance[J].Journal of Jilin University(Earth Science Edition), 2017,47(1):139-153.
[25] Wang Q, Wyman D A, Xu J, et al. Early Cretaceous Adakitic Granites in the Northern Dabie Complex, Central China:Implications for Partial Melting and Delamination of Thickened Lower Crust[J]. Geochimica et Cosmochimica Acta, 2007, 71(10):2609-2636.
[26] Xu H, Ma C, Ye K. Early Cretaceous Granitoids and Their Implications for the Collapse of the Dabie Orogen, Eastern China:SHRIMP Zircon U-Pb Dating and Geochemistry[J]. Chemical Geology, 2007, 240(3):238-259.
[27] Fan W M, Guo F, Wang Y J, et al. Late Mesozoic Volcanism in the Northern Huaiyang Tectono-Magmatic Belt, Central China:Partial Melts from a Lithospheric Mantle with Subducted Continental Crust Relicts Beneath the Dabie Orogen?[J]. Chemical Geology, 2004, 209(1):27-48.
[28] Qi L, Jing H, Gregoire D C. Determination of Trace Elements in Granites by Inductively Coupled Plasma Mass Spectrometry[J]. Talanta, 2000, 51(3):507-513.
[29] Sun S S, Mcdonough W F. Chemical and Isotopic Systematics of Oceanic Basalts:Implications for Mantle Composition and Processes[J]. Geological Society London Special Publications, 1989, 42(1):313-345.
[30] Middlemost E A K. Naming Materials in the Magma/Igneous Rock System[J]. Annual Review of Earth & Planetary Sciences, 1994, 37(3/4):215-224.
[31] Irvine T N, Baragar W R A. A Guide to the Chemical Classification of the Common Volcanic Rocks[J]. Canadian Journal of Earth Sciences, 1971, 8(5):523-548.
[32] Rickwood P C. Boundary Lines Within Petrologic Diagrams Which Use Oxides of Major and Minor Elements[J]. Lithos, 1989, 22(4):247-263.
[33] 王强,王人镜,邱家骧,等. 大别山核部九资河花岗岩体成因[J]. 地球化学, 2000,29(2):120-131. Wang Qiang, Wang Renjing, Qiu Jiaxiang, et al. Petrogenesis of Jiuzihe Granites in the Core of Dabie Mountains[J]. Geochimica, 2000,29(2):120-131.
[34] 王强,邱家骧,王人镜. 大别山花岗质岩浆的形成:胶水或含自由水体系的熔融:以天堂寨和九资河花岗岩为例[J]. 地质学报, 2000,74(1):63-71. Wang Qiang, Qiu Jiaxiang, Wang Renjing. The Formation of Yanshanian Granitic Magma in Dabie Mountains:Dehydration or Aquifer Melting:With Tiantangzhai and Jiuzihe Granite as Examples[J]. Acta Geologica Sinica, 2000,74(1):63-71.
[35] Wang Y, Fan W, Peng T, et al. Nature of the Mesozoic Lithospheric Mantle and Tectonic Decoupling Beneath the Dabie Orogen, Central China:Evidence from 40Ar/39Ar Geochronology, Elemental and Sr-Nd-Pb Isotopic Compositions of Early Cretaceous Mafic Igneous Rocks[J]. Chemical Geology, 2005, 220(3):165-189.
[1] Chen Huijun, Yu Hongbin, Ma Yongfei, Chen Jingsheng, Qian Cheng, Liu Shiwei, Cui Tianri, Zhong Hui. Zircon U-Pb Age, Petrological Geochemistry and Tectonic Implication of Alkaline Granitein South-Eastern Jilin Province [J]. Journal of Jilin University(Earth Science Edition), 2020, 50(2): 531-541.
[2] Zheng Guodong, Meng Qingtao, Liu Zhaojun. Geochemical Characteristics and Paleolimnological Information of Oil Shale in 1st Member of Qingshankou Formation in Northern Songliao Basin [J]. Journal of Jilin University(Earth Science Edition), 2020, 50(2): 392-404.
[3] Shan Chengheng, Wang Zheng, Shi Changhao. Geochemical Assessment of Land Quality Based on Comprehensive Grading Method: A Case Study of Wulajie Town in Jilin Province [J]. Journal of Jilin University(Earth Science Edition), 2019, 49(3): 817-829.
[4] Fu Yanxin, Tan Sizhe, Hou Kaiwen. Formation Conditions and Resource Potentiality of Taizhou Formation in North Sag of South Yellow Sea Basin [J]. Journal of Jilin University(Earth Science Edition), 2019, 49(1): 230-239.
[5] Mei Xi, Zhang Xunhua, Liu Jian, Wang Zhongbo, Guo Xingwei, Huang Xiangtong. Elemental Geochemical Record of Land and Sea Environmental Evolution Since 3.50 Ma in South Yellow Sea [J]. Journal of Jilin University(Earth Science Edition), 2019, 49(1): 74-84.
[6] Wang Xiuqi, Teng Long, Zheng Hongjun, Fang Chaogang, Zhang Xunhua. Comprehensive Evaluation of Shale Gas Potential of Permian Leping Formation in Fengcheng-Leping Area of Lower Yangtze Region [J]. Journal of Jilin University(Earth Science Edition), 2019, 49(1): 248-260.
[7] Zhu Yixiu, Shan Junfeng, Wang Huan, Cai Guogang. Petrological Characteristics of Archean Metamorphic Reservoir in Central Area of Damintun Depression, Liaohe [J]. Journal of Jilin University(Earth Science Edition), 2018, 48(5): 1304-1315.
[8] Yin Yechang, Hao Libo, Zhao Yuyan, Shi Houli, Tian Wu, Zhang Yuhua, Lu Jilong. Gaojiadian Granite and Shepantu Granite in Eastern Hebei Province: Chronology, Geochemistry and Geological Significances [J]. Journal of Jilin University(Earth Science Edition), 2018, 48(2): 574-586.
[9] Zhao Yuyan, Li Bing, Lu Jilong, Hao Libo, Zhao Yu, Wang Dongming. Geochemical and Geophysical Information Integration Technology for Geological Mapping at Shallow Overburden Area in Northeast China [J]. Journal of Jilin University(Earth Science Edition), 2018, 48(1): 318-333.
[10] Tan Hongqi, Liu Yuping. Genesis of Amphibolite in Mengdong Group-Complex in Southeastern Yunnan and Its Tectonic Significance [J]. Journal of Jilin University(Earth Science Edition), 2017, 47(6): 1763-1783.
[11] Chen Zhijun, Ren Laiyi, He Yonghong, Liu Huchuang, Song Jian. Geochemical Characteristics and Formation Environment of High-Quality Hydrocarbon Source Rocks of Yingen Formation in Hari Sag,Yingen-Ejinaqi Basin [J]. Journal of Jilin University(Earth Science Edition), 2017, 47(5): 1352-1364.
[12] Xiao Fan, Chen Jianguo. Application of PPC Model Combined with RCGA to Identify and Extract Geochemical Anomaly [J]. Journal of Jilin University(Earth Science Edition), 2017, 47(4): 1319-1330.
[13] Dong Weihong, Meng Ying, Wang Yushan, Wu Xiancang, Lü Ying, Zhao Hui. Hydrochemical Characteristics and Formation of the Shallow Groundwater in Fujin,Sanjiang Plain [J]. Journal of Jilin University(Earth Science Edition), 2017, 47(2): 542-553.
[14] Cheng Wenbin, Yin Li, Chen Cuihua, Song Yukun, Li Guanqing, Zhang Xingguo, Xia Baoben, Dawa Ciren. Geochemical Characteristics of Primary Halos in No. I Ore Body of Keyue Pb-Zn-Sb-Ag Polymetallic Deposit, Tibet [J]. Journal of Jilin University(Earth Science Edition), 2016, 46(6): 1711-1723.
[15] Li Fulai, Xiao Fei, Meng Fanchao, Ren Zeying. Geochemical Characteristics and Implication for Provenance of Upper Permian Linxi Formation Clastic Rocks in Solonker Area, Inner Mongolia [J]. Journal of Jilin University(Earth Science Edition), 2016, 46(6): 1769-1780.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © Journal of Jilin University(Earth Science Edition), All Rights Reserved.
Tel: +86-431-88502374；13756165364　E-mail: xuebao1956@jlu.edu.cn
Powered by Beijing Magtech Co. Ltd