The Paleoproterozoic bimodal magmatism in the SW Yangtze block: Implications for initial breakup of the Columbia supercontinent

Liu, Kang; Lu, Gui-Mei; Wang, Zizheng; Huang, Si-Fang; Xue, Er-Kun; Wang, Wei

doi:10.1016/j.lithos.2019.02.021

Cited by 30 publications

(4 citation statements)

References 72 publications

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“…(a–c) Rock classification diagrams of studied mafic rocks (after Irvine & Baragar, 1971; Miyashiro, 1974; Winchester & Floyd, 1977). Note: The data of 1.74, 1.70, and 1.66 Ga mafic rocks and 1.50 Ga Zhuqing gabbro are from Chen et al (2013), Liu et al (2019), Lu et al (2019a), and Yang et al (2015). …”

Section: Analytical Methods and Resultsmentioning

confidence: 99%

“…There are two contrasting views of the driving force for supercontinent breakup, involving either the development of encircling subduction zones along the supercontinent margins or by mantle plumes within the supercontinent (Cawood et al, 2016; Ernst et al, 2008; Li et al, 2019). Massive late Paleoproterozoic to early Mesoproterozoic mafic igneous rocks, which were considered to be produced in intracontinental rift setting, are exposed in the southwestern Yangtze Block (e.g., Chen et al, 2013; Liu et al, 2019; Lu et al, 2019; Zhao, Zhou, & Zheng, 2010; Zhao, Zhou, Li, et al, 2010). We conclude that this mafic magmatism is related to the early breakup of the Nuna supercontinent, triggered by mantle plumes within crustal blocks.…”

Section: Discussionmentioning

confidence: 99%

“…Paleoproterozoic rock units in the Yangtze Block are tentatively incorporated within Nuna (e.g., Cawood et al, 2020, 2018; Furlanetto et al, 2016; Han et al, 2017; Wang et al, 2016; Yin et al, 2013; Zhao et al, 2004), but the absence of precise paleomagnetic data has resulted in a number of contrasting and, in some cases, mutually exclusive models (e.g., Cawood et al, 2018; Chen et al, 2013; Furlanetto et al, 2016; Wang et al, 2014, 2016; Zhao, Zhou, & Zheng, 2010; Zhao, Zhou, Li, et al, 2010; Zhou et al, 2014). Voluminous late Paleoproterozoic to early Mesoproterozoic mafic igneous rocks, which were deemed to be produced in an intracontinental rift environment, are exposed in the southwestern Yangtze Block and correspond to the early breakup (or attempted breakup) of the Nuna supercontinent (e.g., Chen et al, 2013; Liu et al, 2019; Lu et al, 2019; Zhao, Zhou, & Zheng, 2010; Zhao, Zhou, Li, et al, 2010). However, the geodynamic driving force for this magmatism is poorly constrained.…”

Section: Introductionmentioning

confidence: 99%

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Late Paleoproterozoic to Early Mesoproterozoic Mafic Magmatism in the SW Yangtze Block: Mantle Plumes Associated With Nuna Breakup?

Wang

Cawood

et al. 2020

JGR Solid Earth

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Numerous late Paleoproterozoic to early Mesoproterozoic mafic magmatic rocks are exposed in the southwestern Yangtze Block, corresponding to early breakup of the Nuna supercontinent. Geochronological data reveal three episodes of mafic magmatism at ~1,740, 1,700, and 1,500 Ma. The two older generations have MORB‐like Nb/Ta ratios and superchondritic Nd‐Hf isotopes, indicating that they were likely derived from partial melting of asthenospheric mantle. In contrast, the ~1,500 Ma mafic rocks possess OIB‐like Nb/Ta (16.7–19.1) and Zr/Hf (41.0–45.1) ratios, εNd (t) values (−0.8 to +0.1), and εHf (t) values (−3.3 to +8.4), suggesting that they originated from a mantle plume. These three pulses of mafic magmatic activity in the Yangtze Block have geochemical features (such as TiO2 contents, Nb/Y, and La/Yb values), similar to coeval mafic rocks in Siberia and Laurentia, consistent with detrital zircon provenance studies, which show a spatial linkage of the Yangtze Block with northern Laurentia in the Nuna configuration. Taking all synchronous mafic magmatism into account, a mantle plume beneath southern Siberia was considered to be initiated at ~1,750 Ma forming a broad region of mafic magmatism that extended into the Yangtze Block as well as beneath northern Laurentia and resulted in lithospheric extension. The Yangtze Block was possibly the nearest neighbor to northwestern Siberia at ~1,500 Ma and subsequently drifted from the Nuna supercontinent induced by the ~1,500 Ma Kuonamka mantle plume, heralding a period of limited magmatic activity and tectonic quiescence in the Yangtze Block that extended throughout the remainder of the Mesoproterozoic.

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Section: Analytical Methods and Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Late Paleoproterozoic to Early Mesoproterozoic Mafic Magmatism in the SW Yangtze Block: Mantle Plumes Associated With Nuna Breakup?

Wang

Cawood

et al. 2020

JGR Solid Earth

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“…(c) ε Hf (t) versus crystallization ages for the Statherian granitoids in the eastern NCC (data collected from [8,10,11], and references therein). (d) ε Hf (t) versus crystallization ages for the Statherian granitoids in the southwestern part of the Yangtze Block (data collected from [39,40]).…”

Section: Zircon U-pb and Lu-hf Analysesmentioning

confidence: 99%

Statherian (ca. 1714–1680 Ma) Extension-Related Magmatism and Deformation in the Southwestern Korean Peninsula and Its Geological Significance: Constraints from the Petrological, Structural, Geochemical and Geochronological Studies of Newly Identified Granitoids

et al. 2021

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In this study, petrological, structural, geochemical, and geochronological analyses of the Statherian alkali feldspar granite and porphyritic alkali feldspar granite in the southwestern part of the Korean Peninsula were conducted to examine petrogenesis of the granitoids and their tectonic setting. Zircon U-Pb dating revealed that the two granites formed around 1.71 Ga and 1.70–1.68 Ga, respectively. The results of the geochemical analyses showed that both of the granites have a high content of K2O, Nb, Ta, and Y, as well as high FeOt/MgO and Ga/Al ratios. Both granites have alkali-calcic characteristics with a ferroan composition, indicating an A-type affinity. Zircon Lu-Hf isotopic compositions yielded negative εHf(t) values (−3.5 to −10.6), indicating a derivation from ancient crustal materials. Both granite types underwent ductile deformation and exhibited a dextral sense of shear with a minor extension component. Based on field relationships and zircon U-Pb dating, it was considered that the deformation event postdated the emplacement of the alkali feldspar granite and terminated soon after the emplacement of the porphyritic alkali feldspar granite in an extensional setting. These data indicated that there were extension-related magmatic activities accompanying ductile deformation in the southwestern part of the Korean Peninsula during 1.71–1.68 Ga. The Statherian extension-related events are well correlated with those in the midwestern part of the Korean and eastern parts of the North China Craton.

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Late Mesoproterozoic to Early Neoproterozoic Tectonic Evolution of the SW Yangtze Block, South China: Evidence from U-Pb Geochronology and Lu-Hf Isotopes of Detrital Zircons from Sedimentary Rocks

Liu,

Ding,

Liu

et al. 2024

J. Earth Sci.

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The Paleoproterozoic bimodal magmatism in the SW Yangtze block: Implications for initial breakup of the Columbia supercontinent

Cited by 30 publications

References 72 publications

Late Paleoproterozoic to Early Mesoproterozoic Mafic Magmatism in the SW Yangtze Block: Mantle Plumes Associated With Nuna Breakup?

Late Paleoproterozoic to Early Mesoproterozoic Mafic Magmatism in the SW Yangtze Block: Mantle Plumes Associated With Nuna Breakup?

Statherian (ca. 1714–1680 Ma) Extension-Related Magmatism and Deformation in the Southwestern Korean Peninsula and Its Geological Significance: Constraints from the Petrological, Structural, Geochemical and Geochronological Studies of Newly Identified Granitoids

Late Mesoproterozoic to Early Neoproterozoic Tectonic Evolution of the SW Yangtze Block, South China: Evidence from U-Pb Geochronology and Lu-Hf Isotopes of Detrital Zircons from Sedimentary Rocks

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