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Substantiation of Reunion plume induced prolonged magmatic pulses (ca. 70.5-65.5 Ma) of the Deccan LIP in the Chhotanagpur Gneissic Complex, eastern India: Constraints from Ar-40/Ar-39 geochronology

文献类型：期刊论文

作者Srivastava, Rajesh K.4; Wang, Fei1,2,3; Shi, Wenbei1
刊名JOURNAL OF EARTH SYSTEM SCIENCE
出版日期2020-03-16
卷号129期号:1页码:10
关键词Ar-40/Ar-39 geochronology mafic dykes Reunion plume Deccan LIP Chhotanagpur Gneissic Complex eastern India
ISSN号2347-4327
DOI10.1007/s12040-020-1364-6
英文摘要This study presents Ar-40/Ar-39 geochronology on the mafic dykes emplaced in the Damodar valley Gondwana sedimentary basins of the Chhotanagpur Gneissic Complex (CGC) to authenticate prolonged mafic magmatic activities during Maastrichtian period. A couple of earlier and one new Ar-40/Ar-39 plateau ages, which range in age from ca. 70.5 to 65.5 Ma, suggest prolonged (5 myr) magmatic activities in the CGC. These syn- and pre-Deccan LIP magmatic intrusive activities in the CGC are supposedly related to the Reunion mantle plume. The reported age of 70.5 +/- 0.9 Ma of a NE-trending mafic dyke emplaced within the Raniganj basin could probably be the earliest record of the Reunion mantle plume activity in the Indian shield. A number of other early magmatic rocks, related to the Reunion mantle plume induced Deccan LIP event, are also recorded elsewhere in the Indian shield and supportive of prolonged magmatic activities. Finally, this study also provides a better constraint on the initiation and lateral extent of the Reunion mantle plume induced Deccan LIP.
WOS关键词LARGE IGNEOUS PROVINCES ; FLOOD BASALTS ; MANTLE PLUMES ; SHILLONG PLATEAU ; DAMODAR VALLEY ; TRAPS ; AGE ; GEOCHEMISTRY ; GONDWANA ; DURATION
资助项目Science and Engineering Research Board (SERB)[EMR/2016/000169]
WOS研究方向Geology ; Science & Technology - Other Topics
语种英语
WOS记录号WOS:000521245100002
出版者INDIAN ACAD SCIENCES
资助机构Science and Engineering Research Board (SERB) ; Science and Engineering Research Board (SERB) ; Science and Engineering Research Board (SERB) ; Science and Engineering Research Board (SERB) ; Science and Engineering Research Board (SERB) ; Science and Engineering Research Board (SERB) ; Science and Engineering Research Board (SERB) ; Science and Engineering Research Board (SERB)
源URL[http://ir.iggcas.ac.cn/handle/132A11/95508]  
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Srivastava, Rajesh K.
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Banaras Hindu Univ, Inst Sci, Ctr Adv Study Geol, Varanasi 221005, Uttar Pradesh, India
推荐引用方式
GB/T 7714		 Srivastava, Rajesh K.,Wang, Fei,Shi, Wenbei. Substantiation of Reunion plume induced prolonged magmatic pulses (ca. 70.5-65.5 Ma) of the Deccan LIP in the Chhotanagpur Gneissic Complex, eastern India: Constraints from Ar-40/Ar-39 geochronology[J]. JOURNAL OF EARTH SYSTEM SCIENCE,2020,129(1):10.
APA Srivastava, Rajesh K.,Wang, Fei,&Shi, Wenbei.(2020).Substantiation of Reunion plume induced prolonged magmatic pulses (ca. 70.5-65.5 Ma) of the Deccan LIP in the Chhotanagpur Gneissic Complex, eastern India: Constraints from Ar-40/Ar-39 geochronology.JOURNAL OF EARTH SYSTEM SCIENCE,129(1),10.
MLA Srivastava, Rajesh K.,et al."Substantiation of Reunion plume induced prolonged magmatic pulses (ca. 70.5-65.5 Ma) of the Deccan LIP in the Chhotanagpur Gneissic Complex, eastern India: Constraints from Ar-40/Ar-39 geochronology".JOURNAL OF EARTH SYSTEM SCIENCE 129.1(2020):10.

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来源：地质与地球物理研究所

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