Geochronological and geochemical implications of Early to Middle Jurassic continental adakitic arc magmatism in the Korean Peninsula

Kim, Sung Won; Kwon, Sanghoon; Ko, Kyoungtae; Yi, Keewook; Cho, Deung Lyong; Kee, Weon Seo; Kim, Bok Chul

doi:10.1016/j.lithos.2015.04.012

Cited by 59 publications

(12 citation statements)

References 56 publications

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“…Similarly, Early Jurassic magmatic event in central Jilin Province are supported by the other studies that reported widespread Early Jurassic igneous rocks throughout the eastern NE China as well as the in Korean Peninsula (Kim et al, , and references therein; Liu, Zhang, et al, ; Tang et al, , and references therein; Wu, Han, et al, , Wu et al, ; Xu, Pei, et al, ; Xu, Wang, et al, ; Zhang et al, , and references therein). In addition, Early Jurassic igneous rocks occur within the NCC, mainly in the Yanshan belt (Zhang et al, , and references therein) and, to a lesser extent, in northeastern Liaoning Province (Wu et al, ; Yang, Wu, Liu, et al, ).…”

Section: Discussionsupporting

confidence: 64%

“…Spatially, Early Jurassic bimodal igneous rocks constitute a NE–SW trending belt, far away and subparallel to the eastern margin of Eurasia, different to the E‐W trending of the Late Triassic magmatism (Yang et al, ; Yang, Wu, Liu, et al, ; Yang, Wu, Wilde, et al, ; Tang et al, ; Zhang et al, ). The coeval calk‐alkaline igneous rocks with the NE–SW trending are identified throughout the Northeast Asia (Kim et al, ; Kiminami & Imaoka, ; Tang et al, ; Wang et al, ; Wu, Han, et al, ; Xu, Pei, et al, ; Xu, Wang, et al, ). The above spatial variation of Early Jurassic igneous rocks is best explained by westward subduction of the Paleo‐Pacific Plate beneath Eurasia.…”

Section: Discussionmentioning

confidence: 99%

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Final Closure of the Paleo‐Asian Ocean and Onset of Subduction of Paleo‐Pacific Ocean: Constraints From Early Mesozoic Magmatism in Central Southern Jilin Province, NE China

Wang

Xing

et al. 2019

JGR Solid Earth

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When the Paleo‐Asian Ocean closed and the Paleo‐Pacific subduction started in NE China remains controversial. To constrain these key issues, we carried out zircon U‐Pb‐Hf isotopic and whole‐rock geochemical studies of Early Mesozoic igneous rocks in central southern Jilin Province, NE China. Early Mesozoic igneous rocks in region were formed at three stages: the middle Triassic (246 Ma), the late Triassic (219–220 Ma), and the early Jurassic (172–194 Ma). Middle Triassic trachyandesites in southern Jilin Province were solely generated through partial melting of ancient lower crust of the North China Craton (NCC), implying ongoing southward subduction of Paleo‐Asian Ocean Plate beneath the NCC at this time. Late Triassic trachyandesites in southern Jilin Province were derived from the magma mixing/mingling of the NCC lithospheric mantle and juvenile eastern Central Asian Orogenic Belt crustal sources. Late Triassic hornblende gabbros in central Jilin Province were derived from depleted lithospheric mantle previously metasomatized by subduction‐related fluids. Coeval adakitic granodiorites were likely produced through the partial melting of thickened juvenile lower crust. Spatially, these rocks occurred on both sides of the Solonker‐Xra‐Moron‐Changchun Suture Zone and record N–S directed extension accompanied by the final closure of the Paleo‐Asian Ocean. Early Jurassic andesites were produced through mixing/mingling between partial melts derived from eastern Central Asian Orogenic Belt lithospheric mantle and ancient NCC crust. In contrast, Early Jurassic felsic rocks, including A‐type granites, were derived from the partial melting of Neoproterozoic accreted lower crust, jointly implying an extensional setting as the result of the initial subduction from Paleo‐Pacific Plate at this time.

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Section: Discussionsupporting

confidence: 64%

Section: Discussionmentioning

confidence: 99%

Final Closure of the Paleo‐Asian Ocean and Onset of Subduction of Paleo‐Pacific Ocean: Constraints From Early Mesozoic Magmatism in Central Southern Jilin Province, NE China

Wang

Xing

et al. 2019

JGR Solid Earth

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“…Based on our new geological observations, geochronological and geochemical data, and combined with previous research, we can summarize the tectonic history of the continental margin of Northeast China in the Late Mesozoic (Figure ). The earliest known subduction in the NW Paleo‐Pacific occurred in Late Carboniferous to Early Permian times (Bi et al, ; Li & Li, ; Sun et al, ), whereas the continental arc of East Asia has been formed since the Early Jurassic (Guo et al, ; Kim et al, ; Li et al, ; Yu et al, ).…”

Section: Discussionmentioning

confidence: 99%

Continental Arc and Back‐Arc Migration in Eastern NE China: New Constraints on Cretaceous Paleo‐Pacific Subduction and Rollback

et al. 2018

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Tectonic evolution models for the Cretaceous Russia Sikhote-Alin and eastern NE China continental margin and interior remain controversial. To understand the magmatic evolution over time and assess regional geodynamic processes, we sampled a diverse array of igneous rocks and employed zircon U-Pb dating, hornblende and plagioclase 40 Ar-39 Ar dating, whole-rock major and trace element analysis, and 87 Sr/ 86 Sr and 143 Nd/ 144 Nd isotopic analysis. The west Sikhote-Alin Pikeshan Formation volcanics and associated granites occurred at a peak of~118 Ma and are hosted by the Triassic-Jurassic accretionary complex. Their whole rock geochemistry shows that SiO 2 increased in a linear trend, Eu/Eu* values decreased from 0.91 to 0.38, and ε Nd (t) values decreased from +0.6 to À2.9, indicating magma mixing of a juvenile mantle wedge source and continental crust, consistent with a continental arc. The arc thickened over time with a felsic dike hosted in the Pikeshan granites showing depletion in heavy rare earth elements. The termination of the arc front is documented by the~107-Ma intermediate lamprophyre and felsic dikes with ε Nd (t) values of +4.5 to +1.1, indicating an increased mantle contribution over time. Lithospheric extension of the Jiamusi Block to the west occurred at~100 Ma, characterized by bimodal volcanism and composite dike emplacement, suggestive of asthenosphere upwelling. Based on the spatial and temporal distribution of these igneous rocks, the continental arc and intraplate magmatism migrated eastward contemporaneously. We favor a model invoking rollback of the subducting Paleo-Pacific slab affecting a long-lived continental arc.In the Early Cretaceous, the Russian Far East and NE China, Korea, and Japan, as well as the Chinese continental shelf, collectively constituted the eastern Asian continental margin before the opening of the marginal seas (Tang et al., 2016). The integrated continental margin was formed by Paleo-Pacific subduction SUN ET AL. 3893

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“…Most of the Sulu orogen is covered by the sea in the SYS area. As a result, most studies of the high‐pressure and ultrahigh‐pressure belts of Sulu orogen have been conducted using the limited onshore data in the east coast of Chinese mainland and the Korea Peninsula (Li et al, 2014a, b; Kim et al, ). In this study, we intend to construct a model of the upper crustal structure of the SYS that will fill the gap between these regional onshore tectonic studies.…”

Section: Geological Settingmentioning

confidence: 99%

Upper crustal structure beneath the northern South Yellow Sea revealed by wide‐angle seismic tomography and joint interpretation of geophysical data

et al. 2016

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Mapping the crustal structure beneath the South Yellow Sea (SYS), which includes the collision zone between the North China Block and the South China Block, will help to reveal the geologic history and relationship between these geologic blocks. Previous interpretations of the crustal structure of the SYS did not use detailed seismic velocity structure as a constraint. We produced an upper crustal velocity model of the northern SYS using a new wide‐angle seismic dataset. Velocity anomalies resolved by our models correlate well with known features such as sedimentary basins and the tectonic uplifts in the SYS as low‐ and high‐velocity anomalies, respectively. As might be expected, not only major faults and/or lithologic boundaries were found to be associated with large velocity gradients, but also our models exhibited resolvable deeply penetrating vertical low‐velocity anomalies associated with the locations of strike‐slip faults that were poorly resolved in an older seismic reflection profile. Our interpretations of the locations of major faults were based on the stacked seismic reflection profile and velocity modelling of wide‐angle seismic array data and were extended to neighbouring regions by following trends in gravity, magnetic and earthquake location data. Faults traversing the North Basin of the SYS converged with the onshore Jia‐Xiang Fault (JXF), suggesting that the branching of the JXF fault system controlled the formation of the North Basin. The distribution of the strike‐slip faults resolved by our modelling of the JXF leads us to propose a model for the North Basin as a strike‐slip stress regime that is consistent with the known tectonic framework. These models will be useful for future analysis of the regional tectonic evolution of the SYS region. Copyright © 2016 John Wiley & Sons, Ltd.

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Geochronological and geochemical implications of Early to Middle Jurassic continental adakitic arc magmatism in the Korean Peninsula

Cited by 59 publications

References 56 publications

Final Closure of the Paleo‐Asian Ocean and Onset of Subduction of Paleo‐Pacific Ocean: Constraints From Early Mesozoic Magmatism in Central Southern Jilin Province, NE China

Final Closure of the Paleo‐Asian Ocean and Onset of Subduction of Paleo‐Pacific Ocean: Constraints From Early Mesozoic Magmatism in Central Southern Jilin Province, NE China

Continental Arc and Back‐Arc Migration in Eastern NE China: New Constraints on Cretaceous Paleo‐Pacific Subduction and Rollback

Upper crustal structure beneath the northern South Yellow Sea revealed by wide‐angle seismic tomography and joint interpretation of geophysical data

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