Geochronology and geochemistry of Late Cretaceous igneous intrusions and Mo–Cu–(W) mineralization in the southern Yidun Arc, SW China: Implications for metallogenesis and geodynamic setting

Wang, Xinsong; Bi, Xian‐Wu; Chen, Leng; Zhong, Hong; Tang, Huili; Chen, You‐Wei; Yin, Guojun; Huang, Ding-Zhu; Zhou, Mei‐Fu

doi:10.1016/j.oregeorev.2014.01.006

Cited by 80 publications

(49 citation statements)

References 108 publications

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“…The petrogenesis of the Late Cretaceous granites associated with the Mo-Cu polymetallic deposits in the Zhongdian arc remains debated, and several genetic models have been proposed: (1) partial melting of the middle-lower crust (Huang, 2013); (2) derivation of the adakitic rocks mainly from a thickened lower continental crust (X. S. Wang et al, 2014a); and (3) re-melting of a residual oceanic slab (H. J. .…”

Section: Late Cretaceous Granitesmentioning

confidence: 99%

“…On the basis of this regional intracontinental extensional tectonic model, Huang (2013) suggested that the Late Cretaceous granites are related to the delamination of the lithospheric mantle during the arc-continent collision stage. However, post-collisional extension took place during the Early Jurassic in the Yidun arc (X. S. Wang et al, 2014a), as intraplate felsic volcanic rocks and A-type granites formed in both the SongpanGanzi terrane and the Yidun arc at 189-182 Ma (Qu et al, 2003;Hu et al, 2005;Zhao et al, 2007). Furthermore, there is no evidence that delamination of the lithosphere occurred in the Zhongdian arc during the Late Cretaceous (evidence such as widespread Late Cretaceous basalt magmatism).…”

Section: Geodynamic Settingmentioning

confidence: 99%

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Double-layer structure of the crust beneath the Zhongdian arc, SW China: U–Pb geochronology and Hf isotope evidence

Cao

Chen

et al. 2016

Journal of Asian Earth Sciences

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Section: Late Cretaceous Granitesmentioning

confidence: 99%

Section: Geodynamic Settingmentioning

confidence: 99%

Double-layer structure of the crust beneath the Zhongdian arc, SW China: U–Pb geochronology and Hf isotope evidence

Cao

Chen

et al. 2016

Journal of Asian Earth Sciences

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“…The samples also have very high Sr (552-1295 ppm), and low Y (11.9-14.5 ppm,) and Yb (1.09-1.32 ppm) contents, with high Sr/Y (38-90) and La/Yb (26-54) ratios. Therefore, they have an adakitic affinity, as indicated by previous studies (Wang et al, 2014a). The Laba granite also has very low Cr (5.86-9.00 ppm) and Ni (5.05-8.13 ppm) contents.…”

Section: Geochemistrymentioning

confidence: 51%

“…The Queershan (103 Ma;Li et al, 2014), Haizishan (98 Ma;Wang et al, 2016Wang et al, 2014b), Relin (83-81 Ma;Gao et al, 2017) and Hongshan (79-76 Ma;Yang et al, 2016) granites developed in the Zhongza block, intruding the Late Trassic Yidun arc volcanics. The Tongchangou (86-85 Ma;Wang et al, 2014a;Yu et al, 2015;Yang et al, 2017a) and Laba (89-87 Ma; this study) granite are located in the Yangtze block. To the southwest, the Caojian (73 Ma;Yu et al, 2014) and Houqiao (76 Ma;Qi et al, 2015) granites occur in the Baoshan and Tengchong blocks, respectively.…”

Section: Geological Settingsmentioning

confidence: 78%

“…However, the petrogenesis and tectonic setting of the widespread Cretaceous granitoids in the southeastern Tibetan Plateau remain debated(e.g., Liu et al, 2006;Ying et al, 2006;Reid et al, 2007;Li et al, 2014;Wang et al, 2014a, b;Yang et al, 2016Yang et al, , 2017aGao et al, 2017). These issues are of particular significance because the Cretaceous granitoids of the southeastern Tibetan Plateau host numerous largescale Cu-Mo-W-Sn-Ag deposits (Hou et al, 2001;Qu et al, 2002;Liu et al, 2006;Ying et al, 2006;Wang et al, 2014a;Yang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Late Cretaceous Adakitic Granites of the Southeastern Tibetan Plateau: Garnet Fractional Crystallization of Arc‐Like Magmas at the Thickened Neo‐Tethyan Continental Margin

Xiang

Xue

Yang

et al. 2019

Acta Geologica Sinica (Eng)

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The tectonic setting of Cretaceous granitoids in the southeastern Tibet Plateau, east of the Eastern Himalaya Syntax, is debated. Exploration and mining of the Laba Mo-Cu porphyry-type deposit in the area has revealed Late Cretaceous granites. New and previously published zircon U-Pb dating indicate that the Laba granite crystallized at 89-85 Ma. Bulk-rock geochemistry, Sr-Nd isotopic data and in situ zircon Hf isotopic data indicate that the granite is adakitic and was formed by partial melting of thickened lower crust. The Ca, Fe, and Al contents decrease with increasing SiO 2 content.These and other geochemical characteristics indicate that fractional crystallization of garnet under high-pressure conditions resulted in the adakitic nature of the Laba granite. Cretaceous granitoids are widespread throughout the Tibetan Plateau including its southeastern area, forming an intact curved belt along the southern margin of Eurasia. This belt is curved due to indenting by the Indian continent during Cenozoic, but strikes parallel to both the Indus-Yarlung suture zone and the Main Frontal Thrust belt. It is therefore likely that Cretaceous granitoids in both the Gangdese and southeastern Tibetan Plateau areas resulted from subduction of Neo-Tethyan lithosphere.

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Zircon U–Pb geochronology, geochemistry and Hf isotopes of the Late Cretaceous Hongshan intrusion, western Yunnan, SW China

et al. 2015

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The Hongshan quartz monzonite porphyry is one of the Yanshanian intrusions in the southern part of the Yudun Arc. Detailed zircon U-Pb data of four samples yielded ages of 78.8-80.7 Ma, indicating that the Hongshan intrusion was emplaced during the late stage of Late Cretaceous. The Hongshan intrusion shows shoshonitic and high-K calc-alkaline, with A/CNK = 0.64-1.14. The rocks show an obvious fractionation between light and heavy rare-earth elements (average [La/Yb] N = 38.85), with negative Eu anomalies (Eu/Eu* = 0.60-0.87), enrichment in large-ion lithophile elements (Rb, Th, U and K) and depletion in high field-strength elements (Nb, Ta and P). Rocks have high Sr and low Y content which are characteristics of adakitic rocks, suggesting magma derivation from thickened lower crust. In order to evaluate the nature of the source region, Hf isotope data of zircons were acquired through LA-MC-ICPMS. The negative and variable ε Hf (t) values demonstrate that the Hongshan intrusion was derived from ancient crust, without mantle-derived components and is significantly different from the Triassic intrusions in the southern part of the Yudun Arc. The three Yanshanian intrusions in Hongshan, Relin and Tongchangou are remarkably similar in terms of geochronology, geochemistry and Hf isotopes. We therefore infer that these intrusions had the same magmatic source and we correlate the tectonics with northward subduction of Tethys underneath the Asian continent.

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Geochronology and geochemistry of Late Cretaceous igneous intrusions and Mo–Cu–(W) mineralization in the southern Yidun Arc, SW China: Implications for metallogenesis and geodynamic setting

Cited by 80 publications

References 108 publications

Double-layer structure of the crust beneath the Zhongdian arc, SW China: U–Pb geochronology and Hf isotope evidence

Double-layer structure of the crust beneath the Zhongdian arc, SW China: U–Pb geochronology and Hf isotope evidence

Late Cretaceous Adakitic Granites of the Southeastern Tibetan Plateau: Garnet Fractional Crystallization of Arc‐Like Magmas at the Thickened Neo‐Tethyan Continental Margin

Zircon U–Pb geochronology, geochemistry and Hf isotopes of the Late Cretaceous Hongshan intrusion, western Yunnan, SW China

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