中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 岩石圈演化国家重点实验室
Petrologic and zircon U-Pb geochronological characteristics of the pelitic granulites from the Badu Complex of the Cathaysia Block, South China

文献类型：期刊论文

作者Zhao, Lei1,2; Zhou, Xiwen3; Zhai, Mingguo1,4; Liu, Bo1; Cui, Xiahong1
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2018-06-01
卷号158页码:65-79
关键词Zircon U-Pb geochronology Peliticgranulites Supracrustal rocks Indosinian Orogeny South China
ISSN号1367-9120
DOI10.1016/j.jseaes.2018.02.017
文献子类Article
英文摘要The recognition of the Indosinian Orogeny in the South China block has been controversial and difficult because of strong weathering and thick cover. High temperature (HT) and high pressure (HP) metamorphic rocks related to this orogeny were considered to be absent from this orogenic belt until the recent discovery of eclogite and granulite facies meta-igneous rocks, occurring as lenses within the meta-sedimentary rocks of the Badu Complex. However, metamorphic state of these meta-sedimentary rocks is still not clear. Besides, there have been no geochronological data of HT pelitic granulites previously reported from the Badu Complex. This paper presents petrographic characteristics and zircon geochronological results on the newly discovered kyanite garnet gneiss, pyroxene garnet gneiss and the FIT pelitic granulites (sillimanite garnet gneiss). Mineral assemblages are garnet + sillimanite + ternary feldspar + plagioclase + quartz + biotite for the HT pelitic granulite, kyanite + ternary feldspar + garnet + sillimanite + plagioclase + quartz + biotite for the kyanite garnet gneiss, and garnet + biotite + pyroxene + plagioclase + ternary feldspar + quartz for the pyroxene garnet gneiss, respectively. Decompressional coronas around garnet grains can be observed in all these pelitic rocks. Typical granulite facies mineral assemblages and reaction textures suggest that these rocks experienced HP granulite facies metamorphism and overprinted decompression along a clockwise P-T loop. Results from integrated U-Pb dating and REE analysis indicate the growth of metamorphic zircons from depleted heavy REE sources (100-50 chondrite) compared with detrital zircons derived from granitic sources (typically > 1000 chondrite). Metamorphic zircons in HP granulite exhibit no or subdued negative Eu anomalies, which perhaps indicate zircon overgrowth under eclogite facies conditions. The zircon overgrowth ages range from 250 to 235 Ma, suggesting that HP granulite (eclogite) to granulite facies metamorphism of these supracrustal rocks occurred in the Early-Middle Triassic. Based on the presence of HP granulite facies pelitic rocks, it is inferred that significant underthrusting was involved during the Indosinian Orogeny which introduced these supracrustal rocks to lower crustal levels.
WOS关键词MESOZOIC OVERTHRUST TECTONICS ; LU-HF ISOTOPES ; HIGH-PRESSURE GRANULITES ; SOUTHWESTERN ZHEJIANG ; SOUTHEASTERN CHINA ; CRUSTAL EVOLUTION ; PLAGIOCLASE FELDSPAR ; TRACE-ELEMENTS ; FACIES ZIRCONS ; MAGMATIC ARC
WOS研究方向Geology
语种英语
WOS记录号WOS:000431469600005
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Nature Science Foundation of China(41502182 ; National Nature Science Foundation of China(41502182 ; National Nature Science Foundation of China(41502182 ; National Nature Science Foundation of China(41502182 ; China Geological Survey(1212010811048 ; China Geological Survey(1212010811048 ; China Geological Survey(1212010811048 ; China Geological Survey(1212010811048 ; CAS Priority Strategic Program(XDB18030205) ; CAS Priority Strategic Program(XDB18030205) ; CAS Priority Strategic Program(XDB18030205) ; CAS Priority Strategic Program(XDB18030205) ; China Scholarship Council(201604910053) ; China Scholarship Council(201604910053) ; China Scholarship Council(201604910053) ; China Scholarship Council(201604910053) ; 41530208 ; 41530208 ; 41530208 ; 41530208 ; 12120114064301) ; 12120114064301) ; 12120114064301) ; 12120114064301) ; 41210003 ; 41210003 ; 41210003 ; 41210003 ; 41372196) ; 41372196) ; 41372196) ; 41372196) ; National Nature Science Foundation of China(41502182 ; National Nature Science Foundation of China(41502182 ; National Nature Science Foundation of China(41502182 ; National Nature Science Foundation of China(41502182 ; China Geological Survey(1212010811048 ; China Geological Survey(1212010811048 ; China Geological Survey(1212010811048 ; China Geological Survey(1212010811048 ; CAS Priority Strategic Program(XDB18030205) ; CAS Priority Strategic Program(XDB18030205) ; CAS Priority Strategic Program(XDB18030205) ; CAS Priority Strategic Program(XDB18030205) ; China Scholarship Council(201604910053) ; China Scholarship Council(201604910053) ; China Scholarship Council(201604910053) ; China Scholarship Council(201604910053) ; 41530208 ; 41530208 ; 41530208 ; 41530208 ; 12120114064301) ; 12120114064301) ; 12120114064301) ; 12120114064301) ; 41210003 ; 41210003 ; 41210003 ; 41210003 ; 41372196) ; 41372196) ; 41372196) ; 41372196) ; National Nature Science Foundation of China(41502182 ; National Nature Science Foundation of China(41502182 ; National Nature Science Foundation of China(41502182 ; National Nature Science Foundation of China(41502182 ; China Geological Survey(1212010811048 ; China Geological Survey(1212010811048 ; China Geological Survey(1212010811048 ; China Geological Survey(1212010811048 ; CAS Priority Strategic Program(XDB18030205) ; CAS Priority Strategic Program(XDB18030205) ; CAS Priority Strategic Program(XDB18030205) ; CAS Priority Strategic Program(XDB18030205) ; China Scholarship Council(201604910053) ; China Scholarship Council(201604910053) ; China Scholarship Council(201604910053) ; China Scholarship Council(201604910053) ; 41530208 ; 41530208 ; 41530208 ; 41530208 ; 12120114064301) ; 12120114064301) ; 12120114064301) ; 12120114064301) ; 41210003 ; 41210003 ; 41210003 ; 41210003 ; 41372196) ; 41372196) ; 41372196) ; 41372196) ; National Nature Science Foundation of China(41502182 ; National Nature Science Foundation of China(41502182 ; National Nature Science Foundation of China(41502182 ; National Nature Science Foundation of China(41502182 ; China Geological Survey(1212010811048 ; China Geological Survey(1212010811048 ; China Geological Survey(1212010811048 ; China Geological Survey(1212010811048 ; CAS Priority Strategic Program(XDB18030205) ; CAS Priority Strategic Program(XDB18030205) ; CAS Priority Strategic Program(XDB18030205) ; CAS Priority Strategic Program(XDB18030205) ; China Scholarship Council(201604910053) ; China Scholarship Council(201604910053) ; China Scholarship Council(201604910053) ; China Scholarship Council(201604910053) ; 41530208 ; 41530208 ; 41530208 ; 41530208 ; 12120114064301) ; 12120114064301) ; 12120114064301) ; 12120114064301) ; 41210003 ; 41210003 ; 41210003 ; 41210003 ; 41372196) ; 41372196) ; 41372196) ; 41372196)
源URL[http://ir.iggcas.ac.cn/handle/132A11/88303]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Zhao, Lei
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, 19 Beituchengxi Rd, Beijing 100029, Peoples R China
2.Univ Wollongong, Sch Earth & Environm Sci, GeoQuEST Res Ctr, Wollongong, NSW 2522, Australia
3.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
4.Univ Chinese Acad Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Lei,Zhou, Xiwen,Zhai, Mingguo,et al. Petrologic and zircon U-Pb geochronological characteristics of the pelitic granulites from the Badu Complex of the Cathaysia Block, South China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,158:65-79.
APA Zhao, Lei,Zhou, Xiwen,Zhai, Mingguo,Liu, Bo,&Cui, Xiahong.(2018).Petrologic and zircon U-Pb geochronological characteristics of the pelitic granulites from the Badu Complex of the Cathaysia Block, South China.JOURNAL OF ASIAN EARTH SCIENCES,158,65-79.
MLA Zhao, Lei,et al."Petrologic and zircon U-Pb geochronological characteristics of the pelitic granulites from the Badu Complex of the Cathaysia Block, South China".JOURNAL OF ASIAN EARTH SCIENCES 158(2018):65-79.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。