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Early Carboniferous High Ba-Sr Granitoid in Southern Langshan of Northeastern Alxa: Implications for Accretionary Tectonics along the Southern Central Asian Orogenic Belt
Zheng, Rongguo1,2; Li, Jinyi1; Zhang, Jin1; Xiao, Wenjiao2,3,4,5; Li, Yi6
2019-08-01
Source PublicationACTA GEOLOGICA SINICA-ENGLISH EDITION
ISSN1000-9515
Volume93Issue:4Pages:820-844
AbstractVoluminous granitoids are widely distributed in the Langshan region, northeast of the Alxa block, and record the evolutionary processes of the southern Central Asian Orogenic Belt. The Dabashan pluton was emplaced into the Paleoproterozoic Diebusige complex. Early Carboniferous zircon LA-ICP MS U-Pb ages were from 327 Ma to 346 Ma. The Dabashan pluton can be classified as monzogranite and syenogranite, and exhibits high K2O contents and K2O/Na2O ratios, which reveal a high-K calc-alkaline nature. The samples display strongly fractionated REE patterns, and are enriched in large ion lithophile elements (LILE) relative to high field strength elements (HFSE). The Dabashan plutons display unusually high Ba (823-2817 ppm) and Sr (166-520 ppm) contents and K/Rb ratios (315-627), but low Rb/Ba ratios (0.02-0.14), and exhibit fertile zircon Hf isotopic compositions [epsilon(Hf)(t)=-14 to -20], which are comparable to those of typical high Ba-Sr granitoids. Based on the geochemical compositions of the samples, we suggest that subducted sediments and ancient crustal materials both played important roles in their generation. Basaltic melts were derived from partial melting of subcontinental lithophile mantle metasomatized by subducted sediment-related melts with residual garnet in the source, which caused partial melting of ancient lower crust. Magmas derived from underplating ascended and emplaced in the middle-upper crust at different depths. The resultant magmas experienced some degree of fractional crystallization during their ascent. Given these geochemical characteristics, together with regional tectonic, magmatic, and structure analysis data, an active continental margin environment is proposed for the generation of these rocks.
KeywordLA-ICP MS U-Pb Zircon Hf isotope high Ba-Sr granites CAOB Alxa
DOI10.1111/1755-6724.13803
Funding OrganizationNational Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; China Geological Survey ; China Geological Survey ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; China Geological Survey ; China Geological Survey ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; China Geological Survey ; China Geological Survey ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; China Geological Survey ; China Geological Survey ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences
WOS KeywordZIRCON U-PB ; NORTH CHINA CRATON ; INNER-MONGOLIA ; CRUSTAL GROWTH ; HF ISOTOPE ; PALEOPROTEROZOIC EVOLUTION ; TECTONOTHERMAL EVENTS ; METAMORPHIC BASEMENT ; CONTINENTAL-CRUST ; VOLCANIC-ROCKS
Language英语
Funding ProjectNational Key Research and Development Program of China from the Ministry of Science and Technology of China[2017YFC0601301] ; National Natural Science Foundation of China[41502214] ; National Natural Science Foundation of China[41230207] ; National Natural Science Foundation of China[41572190] ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences[J1706] ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows[2015LH0049] ; China Postdoctoral Foundation[2016M590990] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-SYS012] ; China Geological Survey[12120115069601] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18020203]
Funding OrganizationNational Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; China Geological Survey ; China Geological Survey ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; China Geological Survey ; China Geological Survey ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; China Geological Survey ; China Geological Survey ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; China Geological Survey ; China Geological Survey ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000483557000004
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/93577
Collection岩石圈演化国家重点实验室
Corresponding AuthorZheng, Rongguo
Affiliation1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Res Ctr Mineral Resources, Urumqi 830011, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.China Minmet Corp, Beijing 100010, Peoples R China
Recommended Citation
GB/T 7714
Zheng, Rongguo,Li, Jinyi,Zhang, Jin,et al. Early Carboniferous High Ba-Sr Granitoid in Southern Langshan of Northeastern Alxa: Implications for Accretionary Tectonics along the Southern Central Asian Orogenic Belt[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2019,93(4):820-844.
APA Zheng, Rongguo,Li, Jinyi,Zhang, Jin,Xiao, Wenjiao,&Li, Yi.(2019).Early Carboniferous High Ba-Sr Granitoid in Southern Langshan of Northeastern Alxa: Implications for Accretionary Tectonics along the Southern Central Asian Orogenic Belt.ACTA GEOLOGICA SINICA-ENGLISH EDITION,93(4),820-844.
MLA Zheng, Rongguo,et al."Early Carboniferous High Ba-Sr Granitoid in Southern Langshan of Northeastern Alxa: Implications for Accretionary Tectonics along the Southern Central Asian Orogenic Belt".ACTA GEOLOGICA SINICA-ENGLISH EDITION 93.4(2019):820-844.
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