Melt source and evolution of I-type granitoids in the SE Tibetan Plateau: Late Cretaceous magmatism and mineralization driven by collision-induced transtensional tectonics

Yang, Liqiang; Deng, Jun; Dilek, Yıldırım; Meng, Jianghui; Xue, Gang; Santosh, M.; Wang, Da; Yan, Han

doi:10.1016/j.lithos.2015.10.005

Cited by 68 publications

(59 citation statements)

References 68 publications

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“…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%

“…Besides, several Cretaceous plutons have been identified in other blocks. 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.…”

Section: Geological Settingsmentioning

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: Discussionmentioning

confidence: 99%

Section: Geological Settingsmentioning

confidence: 99%

Section: Geological Settingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 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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“…These bottom‐up mantle upwelling through plume ascent and top‐down oceanic slab subduction processes are the key drivers for arc and non‐arc‐style magmatism, crustal growth, lithospheric evolution, and continental reconfigurations (Cawood, Strachan, Pisarevsky, Gladkochub, & Murphy, ; Nance, Murphy, & Santosh, ). A change from primordial anorthosite‐KREEP basalt to modern granitic‐granodioritic crustal composition, double‐layered mantle convection, remelting of primitive magmatic protoliths to form protocontinental nuclei, gradual thickening of lithosphere and cooling of mantle by recycling and mixing of hydrated, oxidized subducted materials and melt extraction spanning several billion years collectively contributed towards the Precambrian crustal growth (Zhai & Santosh, ; Yang et al, ; Ichikawa, Greaux, & Azuma, ; Manikyamba et al, ; Stern & Miller, ).…”

Section: Introductionmentioning

confidence: 99%

An appraisal of geochemical signatures of komatiites from the greenstone belts of Dharwar Craton, India: Implications for temporal transition and Archean upper mantle hydration

2019

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Archean ultramafic–mafic magmatism associated with dynamic mantle melting processes represents an integral part of crustal evolution and continental growth. Archean mantle plumes and their high temperature derivatives in komatiitic magmas provide a cornerstone in understanding the thermal and chemical evolution of the early Earth and its mantle. In this study, we evaluate the geochemical characteristics of the temporally distinct Sargur Group and Dharwar Supergroup greenstone belts of Dharwar Craton in southern India. The komatiites associated with these greenstone belts are characterized by Al‐depleted and Al‐undepleted compositions. Their MgO, Ni, Co, and Cr concentrations reflect primitive, undifferentiated nature of precursor melts, whereas the HFSE and REE chemistry corroborates high‐degree (30–50%) partial melting of mantle with prominent role of majorite garnet and perovskite in the generation of komatiitic melts. The Al‐depleted komatiites were formed at a greater depth (~13 GPa) by equilibrium melting leaving a garnet‐bearing residue. The resultant komatiitic melt retained buoyancy under extreme pressure and high temperature conditions, segregated and accumulated in the ambient peridotite mantle source and subsequently escaped with progressive decrease in pressure in the ascending plume. The Al‐undepleted and relatively rare Al‐enriched komatiites were derived by fractional melting at intermediate to shallow depths after the discharge of a large proportion of melt ensued by the collapse and entrance of residual garnet into the melt phase. The Mesoarchean–Neoarchean Dharwar komatiites provide evidence for heterogeneous, hydrated Archean upper mantle trapped by ascending mantle plumes. The non‐plume, arc‐related signatures invoke contributions from (a) sub‐cratonic lithospheric mantle roots influenced by ancient subduction events and (b) hydrated Archean upper mantle. The Sargur Group and Dharwar Supergroup komatiites record a distinct temporal transition and geochemical heterogeneity in the Archean mantle beneath the Dharwar Craton and can be attributed to Archean upper mantle hydration by flat slab subduction of >3.3 Ga oceanic crust at shallow level with vestiges of primordial oceanic crust forming deep cratonic mantle roots beneath the Dharwar Craton. The temporal transition towards mantle hydration beneath Dharwar Craton during the Mesoarchean can be correlated with the onset of subduction‐driven plate tectonics and ocean–crust–mantle interactions.

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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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Melt source and evolution of I-type granitoids in the SE Tibetan Plateau: Late Cretaceous magmatism and mineralization driven by collision-induced transtensional tectonics

Cited by 68 publications

References 68 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

An appraisal of geochemical signatures of komatiites from the greenstone belts of Dharwar Craton, India: Implications for temporal transition and Archean upper mantle hydration

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

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