Phanerozoic magmatism in the Proterozoic Cuddapah Basin and its connection with the Pangean supercontinent

被引:4
|
作者
Singh, Th. Dhanakumar [1 ]
Manikyamba, C. [1 ]
Tang, Li [2 ]
Ganguly, Sohini [3 ]
Santosh, M. [2 ,4 ,5 ,6 ]
Subramanyam, K. S. V. [1 ]
Khelen, Arubam C. [1 ]
机构
[1] Natl Geophys Res Inst, CSIR, Uppal Rd, Hyderabad 500007, Andhra Pradesh, India
[2] China Univ Geosci Beijing, Sch Earth Sci & Resources, 29 Xueyuan Rd, Beijing 100083, Peoples R China
[3] Goa Univ, Dept Earth Sci, Taleigao Plateau 403206, Goa, India
[4] Univ Adelaide, Ctr Tecton Explorat & Res, Adelaide, SA 5005, Australia
[5] Ocean Univ China, Key Lab Submarine Geosci & Prospecting Tech, MOE, Qingdao 266100, Shandong, Peoples R China
[6] Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Shandong, Peoples R China
关键词
Cuddapah Basin; Mafic flows; Zircon U-Pb geochronology; Phanerozoic magmatism; Pangea supercontinent; LARGE IGNEOUS PROVINCES; CONTINENTAL FLOOD BASALTS; PERMIAN PANJAL TRAPS; MANTLE PLUME; SOUTHERN INDIA; TRACE-ELEMENT; TARIM BASIN; DYKE SWARM; ND-ISOTOPE; BREAK-UP;
D O I
10.1016/j.gsf.2019.04.001
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Magmatic pulses in intraplate sedimentary basins are windows to understand the tectonomagmatic evolution and paleaoposition of the Basin. The present study reports the U-Pb zircon ages of mafic flows from the Cuddapah Basin and link these magmatic events with the Pangean evolution during late Carboniferous-Triassic/Phanerozoic timeframe. Zircon U-Pb geochronology for the basaltic lava flows from Vempalle Formation, Cuddapah Basin suggests two distinct Phanerozoic magmatic events coinciding with the amalgamation and dispersal stages of Pangea at 300 Ma (Late Carboniferous) and 227 Ma (Triassic). Further, these flows are characterized by analogous geochemical and geochronological signatures with Phanerozoic counterparts from Siberian, Panjal Traps, Emeishan and Tarim LIPs possibly suggesting their coeval and cogenetic nature. During the Phanerozoic Eon, the Indian subcontinent including the Cuddapah Basin was juxtaposed with the Pangean LIPs which led to the emplacement of these pulses of magmatism in the Basin coinciding with the assemblage of Pangea and its subsequent breakup between 400 Ma and 200 Ma. (C) 2019, China University of Geosciences (Beijing) and Peking University. Production and hosting by Elsevier B.V.
引用
收藏
页码:2239 / 2249
页数:11
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