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Late Mesozoic granitoids in the Qinling Orogen, Central China, and tectonic significance

Published on Jul 1, 2018in Earth-Science Reviews 9.53
· DOI :10.1016/j.earscirev.2018.05.004
Nuo Li21
Estimated H-index: 21
(CAS: Chinese Academy of Sciences),
Yan Jing Chen6
Estimated H-index: 6
(PKU: Peking University)
+ 1 AuthorsFranco Pirajno48
Estimated H-index: 48
(UWA: University of Western Australia)
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Abstract
Abstract The Qinling Orogen in central China is a complex collage built through the closure of the northernmost Paleo-Tethys and the suturing of the Yangtze and the North China cratons. In this contribution, geochronological, geochemical and isotopic data of Late Mesozoic granitoids are compiled, which in turn allow for a broad overview on their petrogenesis with respect to tectonic regime of the Qinling Orogen. After a magmatic hiatus during 160–195 Ma, extensive Late Mesozoic granitoids were emplaced, with an age range of 108–160 Ma. They are dominated by I-type granites that indicate formation through remelting crustal rocks at mid to lower crustal levels, although the magma temperatures are generally lower than 800 °C. The Sr-Nd-Hf isotopic data have provincial characters, which could be a reflection of regional differences in the compositions of their source rocks, and hence of the deep crust. Late Mesozoic granitoids occur in three pulses without any magmatic quiescence: i.e. 108–125 Ma, 125–140 Ma and 140–160 Ma. There is a marked variation between granitoids aged pre- and post-125 Ma in terms of spatial distribution, petrology, geochemistry and isotopic features. The older suite displays a northward younging trend if taking the Mian-Lue suture as the boundary line. Rocks in this suite are composed of quartz diorite-granodiorite-monzogranite-granite association, and occur widespread between 109°E and 112°E. The younger suite occurs only in the easternmost part of the orogen (between 111°E and 113°E), and is dominated by monzogranite, granite and syenogranite. Compared with the older suite, the younger suite is characterized by evolved composition (with higher silica but lower Al 2 O 3 , FeO T , MgO and CaO contents) and involved juvenile crust. The magma has a much shallower source as evidenced by low Sr/Y ratios and pronounced Sr, Ba and Eu negative anomalies. The above features indicate that the Late Mesozoic tectonic regime of the Qinling Orogen was an integrated effect of post-collisional compression-extension transition, the back-arc extension related to paleo-Pacific subduction and/or a Cretaceous Pacific superplume event.
  • References (197)
  • Citations (7)
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References197
Newest
Published on Dec 1, 2017in Contributions to Mineralogy and Petrology 3.23
Yao-Hui Jiang28
Estimated H-index: 28
(NU: Nanjing University),
Shu-Qi Zhu1
Estimated H-index: 1
(NU: Nanjing University)
Biotite granites and muscovite-bearing granites are dominant rock types of the widespread granites in SE China. However, their petrogenesis has been enigmatic. A combined study of zircon U–Pb dating and Lu–Hf isotopes, whole-rock element geochemistry and Sr–Nd–O isotopes was performed for three late Mesozoic granitic plutons (Xinfengjie, Jiangbei and Dabu) in central Jiangxi province, SE China. All the plutons are composed of biotite granites and muscovite-bearing granites that have been poorly ...
Published on Dec 1, 2017in Geological Journal 1.95
Hua-Hua Cao13
Estimated H-index: 13
(Ocean University of China),
LISanzhong44
Estimated H-index: 44
(Ocean University of China)
+ 3 AuthorsQian Wang3
Estimated H-index: 3
(Ocean University of China)
This paper presents new results on zircon U–Pb dating of a two-mica schist from the Qinling Group in the core of the North Qinling Orogenic Belt (NQB), Central China, with the aim of constraining the formation time of the Qinling Group, and the tectonic affinity of the North Qinling Microcontinent. Zircon U–Pb dating indicates that the protolith of the metasedimentary rock in the Qinling Group was deposited later than ~1502 Ma. The Qinling Group in the NQB represents a long-lived unit, and its f...
Published on Oct 1, 2017in Earth-Science Reviews 9.53
Peng Gao6
Estimated H-index: 6
(USTC: University of Science and Technology of China),
Yong-Fei Zheng72
Estimated H-index: 72
(USTC: University of Science and Technology of China),
Zi-Fu Zhao39
Estimated H-index: 39
(USTC: University of Science and Technology of China)
Abstract Granitic rocks of Phanerozoic age are common in South China. They are spatially and temporally closely associated with hydrothermal ore deposits. Therefore, many studies have been devoted to these granites regarding their petrogenesis. This study presents a review on the geochemistry of Triassic granites in South China because the Triassic is an important period for the Indosinian orogeny in Southeast Asia. Petrographic investigations indicate that these granites can be categorized into...
Published on Jul 1, 2017in Science China-earth Sciences 2.26
WUFuyuan87
Estimated H-index: 87
(CAS: Chinese Academy of Sciences),
Xiao-Chi Liu18
Estimated H-index: 18
(CAS: Chinese Academy of Sciences)
+ 2 AuthorsLei Yang3
Estimated H-index: 3
(CAS: Chinese Academy of Sciences)
Granite is one of the most important components of the continental crust on our Earth; it thus has been an enduring studied subject in geology. According to present knowledge, granite shows a great deal of heterogeneity in terms of its texture, structure, mineral species and geochemical compositions at different scales from small dike to large batholith. However, the reasons for these variations are not well understood although numerous interpretations have been proposed. The key point of this d...
Published on Apr 1, 2017in Ore Geology Reviews 3.39
Zhan-Ke Li6
Estimated H-index: 6
(China University of Geosciences),
Shi-Jian Bi7
Estimated H-index: 7
(China University of Geosciences)
+ 3 AuthorsDavid Selby33
Estimated H-index: 33
(Durham University)
The southern North China craton hosts numerous world-class porphyry Mo and Pb-Zn-Ag vein deposits. Whether or not the Pb-Zn-Ag veins are genetically associated with the porphyry Mo system remains contentious. Here we focus on the genetic relationships between the Sanyuangou Pb-Zn-Ag vein deposit and the world-class Donggou porphyry Mo deposit, and discuss the potential implications from the spatial and temporal relationships between porphyry and vein systems in the southern North China craton. A...
Published on Sep 1, 2016in Nature Communications 11.88
Qiang Wang4
Estimated H-index: 4
,
Chris J. Hawkesworth101
Estimated H-index: 101
+ 10 AuthorsGong-Jian Tang14
Estimated H-index: 14
The role of the low velocity-high conductivity zones (LV–HCZs) in developing the Tibetan Plateau has remained controversial. Here, Wang et al. present new geochemical and petrological data that show the LV–HCZs are sources of partial melt thus giving insight into the development of the Tibetan Plateau.
Published on Aug 1, 2016in Earth-Science Reviews 9.53
Liang Liu14
Estimated H-index: 14
(Northwest University (United States)),
Xiaoying Liao5
Estimated H-index: 5
(Northwest University (United States))
+ 5 AuthorsDanling Chen8
Estimated H-index: 8
(Northwest University (United States))
Abstract The North Qinling orogenic belt is an important component of Qinling composite orogen in Central China. High-pressure and ultra-high pressure (HP-UHP) rocks occur as lenses or layers surrounded by gneissic rocks in the northern, central, and southern Qinling Complex of the North Qinling belt, considered to have formed through deep continental subduction. The magmatic protoliths of the HP-UHP metamorphic rocks show formation ages (ca. 800 Ma), geochemical characteristics, and Pb-Nd isoto...
Published on Jul 1, 2016in International Journal of Earth Sciences 2.29
Changming Wang8
Estimated H-index: 8
(China University of Geosciences),
Liang Chen2
Estimated H-index: 2
+ 3 AuthorsXiangru Lai1
Estimated H-index: 1
(China University of Geosciences)
Late Mesozoic magmatic rocks from the Taishanmiao Batholith were collected for LA–ICP–MS dating, Sr–Nd–Hf isotope systematics, and whole-rock major and trace element geochemistry to help understand the nature of collisional and extensional events along the southern margin of the North China Craton. The batholith consists of three texturally distinguishable phases of a 125 ± 1 Ma medium- to coarse-grained syenogranite, a 121 ± 1 Ma fine- to medium-grained syenogranite, and a 113 ± 1 Ma porphyriti...
Published on Jul 1, 2016in Precambrian Research 3.83
Hua-Hua Cao13
Estimated H-index: 13
(Ocean University of China),
LISanzhong44
Estimated H-index: 44
(Ocean University of China)
+ 3 AuthorsIan D. Somerville26
Estimated H-index: 26
(UCD: University College Dublin)
Abstract This paper presents the results of U–Pb dating of detrital zircons from six metasedimentary rocks in the Taowan and Kuanping groups in the northern margin of the North Qinling Orogenic Belt (NQB), Central China, for constraining the tectonic affinity of the NQB, the existence time and tectonic features of the Kuanping Ocean and the accurate northern boundary of the NQB. Zircon U–Pb dating indicates that the protoliths of the two metasedimentary rocks from the upper and lower parts of th...
Published on Jul 1, 2016in Gondwana Research 6.48
Zhen-Ju Zhou6
Estimated H-index: 6
(PKU: Peking University),
Shi-Dong Mao1
Estimated H-index: 1
(CAS: Chinese Academy of Sciences)
+ 1 AuthorsM. Santosh82
Estimated H-index: 82
Abstract The Qinling Orogen, central China, was constructed during the Mesozoic collision between the North China and Yangtze continental plates. The orogen includes four tectonic units, from north to south, the Huaxiong Block (reactivated southern margin of the North China Craton), North Qinling Accretion Belt, South Qinling Fold Belt (or block) and Songpan Fold Belt, evolved from the northernmost Paleo-Tethys Ocean separating the Gondwana and Laurentia supercontinents. Here we employ detrital ...
Cited By7
Newest
Published on Nov 1, 2019in Gondwana Research 6.48
Shaohao Zou3
Estimated H-index: 3
(CAS: Chinese Academy of Sciences),
Deru Xu11
Estimated H-index: 11
(CAS: Chinese Academy of Sciences)
+ 4 AuthorsTingwei Ye3
Estimated H-index: 3
(CAS: Chinese Academy of Sciences)
Abstract The composition of the continental crust of the North China Craton (NCC) is more felsic than that of the average bulk crust, which is regarded to be the result of the delamination of the thickened lower crust during Mesozoic. However, whether the thickened continental crust existed and when the delamination event happened along the southern margin of the NCC are still debated. Here, we report geochronological, geochemical and Sr-Nd-Hf-Pb isotopic evidence that granitoids from the Late J...
Published on Mar 1, 2019in Geoscience frontiers 4.16
Fan Yang4
Estimated H-index: 4
(China University of Geosciences),
Fei Xue2
Estimated H-index: 2
(China University of Geosciences)
+ 5 AuthorsXuhuang Zhang2
Estimated H-index: 2
Abstract The Qinling Orogen in Central China records the history of a complex geological evolution and tectonic transition from compression to extension during the Late Mesozoic, with concomitant voluminous granitoids formation. In this study, we present results from petrological, geochemical, zircon U-Pb-Lu-Hf isotopic studies on the Lengshui felsic dykes from Luanchuan region in the East Qinling Orogen. We also compile published geochronological, geochemical, and Hf isotopic data from Luanchua...
Published on Jul 1, 2019in Lithos 3.91
Yuan-Shuo Zhang2
Estimated H-index: 2
(USTC: University of Science and Technology of China),
Wolfgang Siebel40
Estimated H-index: 40
(University of Freiburg)
+ 2 AuthorsCHENFukun39
Estimated H-index: 39
(USTC: University of Science and Technology of China)
Abstract The geochemical compositions and zircon U-Pb ages of the Muhuguan and Mangling plutons of the North Qinling Terrane (NQT), China, provide insights into the basement rocks involved in magma genesis and the Mesozoic tectonic evolution of the NQT. Monzogranites from the two plutons are characterized by high SiO 2 contents (69.3–77.0 wt%), low Mg numbers (0.21–0.38), enriched light rare-earth elements, Th, U, and Pb, depleted high-field-strength elements, and negative Eu anomalies. The sour...
Published on Jun 1, 2019in Journal of Asian Earth Sciences 2.76
Feifei Zhang14
Estimated H-index: 14
(Northwest University (United States)),
Yuejun Wang48
Estimated H-index: 48
(SYSU: Sun Yat-sen University)
+ 2 AuthorsWeiming Fan57
Estimated H-index: 57
(CAS: Chinese Academy of Sciences)
Abstract New geochronological, geochemical and Sr-Nd-Hf isotopic data for the early Cretaceous Daying volcanic sequence, eastern Qinling Orogen, provides a probe into the nature of, and tectonic process operating in, the underlying Mesozoic mantle. The volcanic rocks in the sequence are composed of basaltic trachyandesite, pyroxene-andesite, trachyandesite and trachyte. They yield zircon U-Pb and whole-rock 40 Ar/ 39 Ar plateau ages of 134–124 Ma, roughly synchronous with the Cretaceous igneous ...
Published on Apr 24, 2019in PLOS ONE 2.78
Yiu-Kang Hsu , Benjamin Sabatini1
Estimated H-index: 1
(MIT: Massachusetts Institute of Technology)
A well reasoned lead (Pb) isotope-driven provenance study lies in concert with a comprehensively evaluated database of geological ore sources and accompanying archaeological and contextual information. In this paper we have compiled and evaluated all currently available Pb isotope data for galena and K-feldspars in China, and provided geological interpretations for how their ore-forming substances evolved across relevant tectonic terrains. We pay particular attention to the geological settings o...
Published on Dec 1, 2018in Lithos 3.91
Di Hong1
Estimated H-index: 1
(CAS: Chinese Academy of Sciences),
Yaoling Niu63
Estimated H-index: 63
+ 9 AuthorsQiqi Xue3
Estimated H-index: 3
(China University of Geosciences)
Abstract Jurassic-Cretaceous granitoids are widespread in eastern continental China and have been considered by many as resulting from paleo-Pacific subduction. However, the actual mechanism of their petrogenesis remains speculative. In order to address this important problem and on the basis of our regional study, we hypothesized that the coastal granitoids may result directly from the paleo-Pacific plate subduction, whereas the widespread granitoids in the continental interiors ultimately resu...
Published on Aug 1, 2018in Ore Geology Reviews 3.39
Xiao Xiong1
Estimated H-index: 1
(Northwest University (United States)),
Laimin Zhu9
Estimated H-index: 9
(Northwest University (United States))
+ 5 AuthorsAnlin Guo2
Estimated H-index: 2
(Northwest University (United States))
Abstract The Wenquan Mo deposit in Gansu Province, China, is one of the large porphyry Mo deposits in the Western Qinling Orogen that associated with the Triassic continental collision between the North China Block and South China Block. In this study, detailed fluid inclusions (FIs) analyses were performed on early stage quartz–biotite–K-feldspar veins, middle stage quartz–polymetallic sulfide veins and late stage sulfide–calcite veins. Four compositional types of FIs are observed, including pu...