Timing of formation and origin of the Tongchanggou porphyry–skarn deposit: Implications for Late Cretaceous Mo–Cu metallogenesis in the southern Yidun Terrane, SE Tibetan Plateau

Yang, Liqiang; Deng, Jun; Xue, Gang; He, Wenjun; Meng, Jianghui; Santosh, M.; Yu, Hao‐Cheng; Yang, Zhen; Wang, Da

doi:10.1016/j.oregeorev.2016.03.015

Cited by 48 publications

(34 citation statements)

References 67 publications

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“…Our geochronological and geochemical data reveal that the Laba pluton is an adakitic I-type granite with zircon U -Pb age of 89-87 Ma, consistent with previous published results (Wang et al, 2014a, b;Yang et al, 2017a;Fig. 8a).…”

Section: Discussionsupporting

confidence: 93%

“…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%

“…8a). In addition to the Laba granite, there are several coeval plutons with adakitic affinity in adjacent regions, including Relin (83-81Ma; Gao et al, 2017), Hongshan (79-76Ma;Yang et al, 2016), Tongchuanggou (83-81Ma; Wang et al, 2014a;Yu et al, 2015;Yang et al, 2017a) granites. Here we discuss the petrogenesis and tectonic implications of these adakitic rocks, using all available geochemical data.…”

Section: Discussionmentioning

confidence: 99%

“…BB, Baoshan Block; ICB, Indochina Block; TB, Tengchong Block; ZB, Zhongza Block. Geochronological data are from: Wen et al (2008), Zhao et al (2008), Guan et al (2010), Ma and Yue (2010), Lü et al (2011), Yu et al (2011), Zhu et al (2011), Huang et al (2013, Li et al (2013), Wang et al (2013), Yao et al (2013), Liu et al (2014), Meng et al (2014), Wang et al (2014), Wang et al (2014a, b), Yu et al (2014), Chen et al (2015), Qi et al (2015), Sun et al (2015), Yu et al (2015), Yang et al, (2016Yang et al, ( , 2017a, Gao et al (2017) and G.M. although the various trends in geochemistry of these rocks do not support this interpretation (discussed below).…”

Section: Geological Settingsmentioning

confidence: 99%

“…The Gangdese arc belt is commonly interpreted as being the result of Neo-Tethyan subduction despite the debate concerning subduction polarity (e.g., Zhu et al, 2011). 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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Section: Discussionsupporting

confidence: 93%

Section: Geological Settingsmentioning

confidence: 78%

Section: Discussionmentioning

confidence: 99%

Section: Geological Settingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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Geochronology, mineralogy, and geochemistry of the Late Triassic Xiuwacu biotite granite in the southern Yidun Terrane, southwest China: Insights into the petrogenesis and magmatic fertility

et al. 2019

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The southern Yidun Terrane formed in response to the westward subduction of the Garzê-Litang oceanic lithosphere. The Xiuwacu pluton, consisting of the Late Triassic biotite granite and Late Cretaceous monzogranite porphyry, is located in the northern portion of the southern Yidun Terrane. It hosts the Late Cretaceous quartz-vein-type Mo-W deposit genetically related to the intraplate monzogranite porphyry. However, the petrogenesis and magmatic fertility of the biotite granite remain unclear. Sixteen zircons from the biotite granite yield a weighted mean 206 Pb/ 238 U age of 217 ± 1.2 Ma, indicating that the biotite granite emplaced synchronously with the arc-related andesites and porphyries in the southern Yidun Terrane. Unlike these slab melt-derived adakitic rocks, the Xiuwacu biotite granites show typical I-type granite affinities, with relatively high SiO 2 contents, low Sr/Y ratios, and high Y contents. These granites display depleted zircon Hf isotopic signatures (ƐHf(t) = 0.6-3.8) but enriched whole-rock Sr-Nd and zircon O isotopic signatures, suggesting that the mixing between juvenile materials and external enriched melts might have contributed to the generation of biotite granite. Moreover, they show relatively high Al 2 O 3 / (FeO T + MgO + TiO 2 ), Th/Yb, and Th/Nb ratios, which are collectively indicative of the input of sediment melts extracted from subducting slab into the melt source of biotite granite. The high MgO, TiO 2 , F, and Cl contents of biotite and the excess Al of plagioclase suggest that the Xiuwacu biotite granites formed under high oxygen fugacities, magmatic water contents, and volatiles components and they might have Cu prospecting potentials.

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Geochronology and geochemistry of the Tongjige granodiorites in the Jinshajiang suture zone, SW China: Constraints on petrogenesis and tectonic evolution of the Palaeo‐Tethys Ocean

Zhang

Yang

et al. 2020

Geological Journal

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The Jinshajiang suture zone (JSZ) is one of the most significant tectonic zones in the eastern Tethys area. A large number of plutons are regarded as the result of tectono‐magmatic activities associated with the evolution of the Palaeo‐Tethys Ocean. The Tongjige pluton in the central part of JSZ can indicate the magmatism and its geodynamic evolution. The Tongjige pluton (225.6 Ma) consists mainly of granodiorite with abundant coeval mafic microgranular enclaves (MMEs) (226.1 Ma). The host granodiorite is calc‐alkaline and typical I‐type, with SiO2 contents ranging from 65.75 to 66.91 wt%. The MMEs have relatively high MgO (4.00–4.07 wt%) and Fe2O3T (9.27–9.40 wt%) abundances and low SiO2 (53.59–53.87 wt%). Both MMEs and host granodiorites are characterized by the enrichment of light rare earth elements and depletion of heavy rare earth elements. They are also negative in Eu and enriched in Th and U, which are consistent with the trace element characteristics of typical island‐arc magmatite. The zircon Hf(t) values (−3.48 to −0.31) are negative, with the model ages of 1.3–1.2 Ga. These petrographic and geochemical characteristics indicated that the Tongjige pluton was derived from the melting of an ancient lower crust and underwent the process of mafic‐felsic magmatic mixing in the post‐collision background. The Triassic granitoids in the JSZ show a temporal–spatial relationship with the subduction zone, which constrain the evolution of the Palaeo‐Tethys Ocean. The mixing mechanism of the Tongjige pluton is associated with the break‐off of a subducted slab, which triggered subsequent upwelling of asthenosphere beneath accreted arc fragments and induced underplate of lithospheric mantle‐derived magmas and mixed with the lower crust‐derived felsic magma. In general, the Late Triassic pluton recorded significant crustal growth and continental development, marking the final stage of subduction‐related magmatism in the JSZ region, after which the region entered into a stage of post‐collision evolution.

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Timing of formation and origin of the Tongchanggou porphyry–skarn deposit: Implications for Late Cretaceous Mo–Cu metallogenesis in the southern Yidun Terrane, SE Tibetan Plateau

Cited by 48 publications

References 67 publications

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

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

Geochronology, mineralogy, and geochemistry of the Late Triassic Xiuwacu biotite granite in the southern Yidun Terrane, southwest China: Insights into the petrogenesis and magmatic fertility

Geochronology and geochemistry of the Tongjige granodiorites in the Jinshajiang suture zone, SW China: Constraints on petrogenesis and tectonic evolution of the Palaeo‐Tethys Ocean

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