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| Early Cretaceous mafic dykes from the Chhota Nagpur Gneissic Terrane, eastern India: Evidence of multiple magma pulses for the main stage of the Greater Kerguelen mantle plume | |
| Srivastava, Rajesh K.1; Wang, Fei2; Shi, Wenbei2; Ernst, Richard E.3,4 | |
| 2023 | |
| Source Publication | JOURNAL OF ASIAN EARTH SCIENCES
 |
| ISSN | 1367-9120 |
| Volume | 241Pages:13 |
| Abstract | Early Cretaceous NNW-to WNW-trending dolerite dykes of the eastern Indian Shield, collectively termed the Raniganj-Koderma swarm, are studied for their emplacement ages and petrogenetic history, and assessed for a possible linkage with the Greater Kerguelen plume. 40Ar/39Ar dates of four dolerite dykes from different loca-tions in the Chhota Nagpur Gneissic Terrane, indicate three pulses of emplacement ca. 118-116 Ma, ca. 112-111 Ma, and ca. 109 Ma. Geochemistry of 19 samples analysed herein (and an additional 12 samples from literature) shows sub-alkaline high-Mg tholeiitic basaltic andesite compositions. All the dyke sets belonging to the Raniganj-Koderma swarm with sub-sets WNW-trending ca. 118 Ma, NNW-trending ca. 116 Ma Salma, and a N-S trending ca. 109 Ma dyke showing similar chemistry. However, NW-trending dykes emplaced ca. 112-111 Ma have slightly different geochemical characteristics. Key trace element geochemistry data, particularly Nb/Y, Zr/Y, Nb/ Yb, Ti/Yb, Th/Nb and Th/Yb ratios, indicate derivation from mantle melts generated from interaction of a plume with a spreading ridge (producing OIB - E-MORB melts) with a minor role for interaction with an enriched lithospheric mantle that was metasomatized during an earlier (pre-Mesozoic time) subduction event. Spatio-temporal distribution of the studied dolerite dykes connects them with the second plume head phase of the Greater Kerguelen mantle plume. |
| Keyword | Early Cretaceous Dolerite dykes Ar40-Ar39 date Greater Kerguelen LIP Eastern India |
| DOI | 10.1016/j.jseaes.2022.105464 |
| Funding Organization | 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) |
| WOS Keyword | LARGE IGNEOUS PROVINCE ; FLOOD BASALTS ; 40AR/39AR GEOCHRONOLOGY ; ISOTOPE GEOCHEMISTRY ; CONTINENTAL-CRUST ; TETHYAN HIMALAYA ; SHILLONG PLATEAU ; DAMODAR VALLEY ; SUNG VALLEY ; PETROGENESIS |
| Language | 英语 |
| Funding Project | Science and Engineering Research Board (SERB)[EMR/2016/000169] |
| Funding Organization | 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) |
| WOS Research Area | Geology |
| WOS Subject | Geosciences, Multidisciplinary |
| WOS ID | WOS:000891308500003 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.iggcas.ac.cn/handle/132A11/106973 |
| Collection | 岩石圈演化国家重点实验室 |
| Corresponding Author | Srivastava, Rajesh K. |
| Affiliation | 1.Banaras Hindu Univ, Inst Sci, Ctr Adv Study Geol, Varanasi 221005, India 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 3.Carleton Univ, Dept Earth Sci, Ottawa, ON K1S5B6, Canada 4.Tomsk State Univ, Fac Geol & Geog, 36 Lenin Ave, Tomsk 634050, Russia |
| Recommended Citation GB/T 7714 | Srivastava, Rajesh K.,Wang, Fei,Shi, Wenbei,et al. Early Cretaceous mafic dykes from the Chhota Nagpur Gneissic Terrane, eastern India: Evidence of multiple magma pulses for the main stage of the Greater Kerguelen mantle plume[J]. JOURNAL OF ASIAN EARTH SCIENCES,2023,241:13. |
| APA | Srivastava, Rajesh K.,Wang, Fei,Shi, Wenbei,&Ernst, Richard E..(2023).Early Cretaceous mafic dykes from the Chhota Nagpur Gneissic Terrane, eastern India: Evidence of multiple magma pulses for the main stage of the Greater Kerguelen mantle plume.JOURNAL OF ASIAN EARTH SCIENCES,241,13. |
| MLA | Srivastava, Rajesh K.,et al."Early Cretaceous mafic dykes from the Chhota Nagpur Gneissic Terrane, eastern India: Evidence of multiple magma pulses for the main stage of the Greater Kerguelen mantle plume".JOURNAL OF ASIAN EARTH SCIENCES 241(2023):13. |
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