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Late Triassic uplift, magmatism and extension of the northern North China block: Mantle signatures in the surface

文献类型：期刊论文

作者Meng, Qing-Ren1,4,5; Wu, Guo-Li1,4,5; Fan, Long-Gang2,4,5; Wei, Hong-Hong3; Wang, Erchie5
刊名EARTH AND PLANETARY SCIENCE LETTERS
出版日期2020-10-01
卷号547页码:9
关键词North China block Late Triassic denudation magmatism extension mantle upwelling
ISSN号0012-821X
DOI10.1016/j.epsl.2020.116451
英文摘要The Late Triassic saw a period of broad uplift, vigorous magmatism and supracrustal stretching in the northern North China block, but the driving mechanism has been uncertain. Previous investigations have mostly dealt with individual tectonic processes, such as petrogenesis of igneous complexes, extensional deformations, or basin development, and the proposed models were aimed to account for some specific processes. This study makes a holistic treatment of Late Triassic denudation, magmatism, and rift basins in an attempt to unravel the driver for these coeval tectonic processes. Late Triassic uplift is registered by a regional disconformity separating Jurassic from Lower-Middle Triassic or older units, and Upper Triassic oligomict conglomerates are suggestive of early-stage peneplanation. The extensive uplift of the northern North China block was also accompanied by the development of the Great Ordos basin in the southern North China block, which exhibits striking southward variation from alluvial/fluvial through deltaic to lacustrine depositional settings. Vigorous magmatism is typified by mantle-sourced alkaline and mafic complexes distributed in an east-west narrow belt. The development of metamorphic core complex and some isolated rift basins is clearly indicative of crustal extension. Spatial variation from coeval island-arc calc-alkaline to backarc bimodal magmatism in the Amurian superterrane hints at southward subduction of the Mongol-Okhotsk plate. All the geologic records point to the plausibility that these synchronous tectonic processes must have been genetically linked and were likely induced by southward subduction of the Mongol-Okhotsk plate. Here, we argue that the Mongol-Okhotsk plate subduction not only triggered arc and backarc magmatism in the Amurian superterrane, but also led to decompression melting and focused upwelling of the upper mantle ahead of the subducting slab beneath the northern North China block. The Late Triassic intraplate extensive uplift, magmatism, and extension in the northern North China block are accordingly interpreted as the signatures of the focused mantle upwelling. (C) 2020 Elsevier B.V. All rights reserved.
WOS关键词MESOZOIC BASIN DEVELOPMENT ; PALEO-ASIAN OCEAN ; CRATON IMPLICATIONS ; TECTONIC EVOLUTION ; INNER-MONGOLIA ; EASTERN HEILONGJIANG ; LIAODONG PENINSULA ; VOLCANIC-ROCKS ; PACIFIC PLATE ; SLAB ROLLBACK
资助项目National Key R&D Program of China[2016YFC0600406] ; National Natural Science Foundation of China[41702237] ; National Natural Science Foundation of China[91114204]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000557762500012
出版者ELSEVIER
资助机构National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/97597]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Meng, Qing-Ren
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100085, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
5.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Meng, Qing-Ren,Wu, Guo-Li,Fan, Long-Gang,et al. Late Triassic uplift, magmatism and extension of the northern North China block: Mantle signatures in the surface[J]. EARTH AND PLANETARY SCIENCE LETTERS,2020,547:9.
APA Meng, Qing-Ren,Wu, Guo-Li,Fan, Long-Gang,Wei, Hong-Hong,&Wang, Erchie.(2020).Late Triassic uplift, magmatism and extension of the northern North China block: Mantle signatures in the surface.EARTH AND PLANETARY SCIENCE LETTERS,547,9.
MLA Meng, Qing-Ren,et al."Late Triassic uplift, magmatism and extension of the northern North China block: Mantle signatures in the surface".EARTH AND PLANETARY SCIENCE LETTERS 547(2020):9.

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