Magmatic response to the interplay of collisional and accretionary orogenies in the Korean Peninsula: Geochronological, geochemical, and O-Hf isotopic perspectives from Triassic plutons

Cheong, Albert Chang-sik; Jo, Hui Je; Jeong, Youn-Joong; Li, Xian‐Hua

doi:10.1130/b32021.1

Cited by 26 publications

(7 citation statements)

References 171 publications

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“…Other “A‐type granites” reported from South China and the Korean peninsula (Cheong et al, 2019; Gao et al, 2019; Lee et al, 2021) appear slightly different in geochemistry from typical A‐type examples and from the Hida boulders. The 224 Ma Wengshan and 215 Ma Jingju granitoid bodies in South China are characterized by slightly high Sr abundance and Sr/Y ratio (Li et al, 2012; Sun et al, 2011) (Figure 6a).…”

Section: Discussionmentioning

confidence: 84%

“…Triassic A‐type granite is extremely rare even in the entire Far East Asia; nevertheless, they indeed occur sporadically in NE China (Sun et al, 2004; Wu et al, 2002), Korean peninsula (Cheong et al, 2019; Kim et al, 1998; Lee et al, 2021), and South China (Gao et al, 2019; Li et al, 2012; Sun et al, 2011). Among them, the most promising candidate for correlative granitoid bodies to the Hida boulders occur in the Lesser Xing'an‐Zhangguangcai ranges in Heilongjian, NE China.…”

Section: Discussionmentioning

confidence: 99%

“…In this regard, the claimed “A‐type granites” in South China differ from the Hida boulders. Also from the southern Korean peninsula, three “A‐type granites” were reported, that is, the 220 Ma Daegang, 217–227 Ma Hapcheon, and 219 Ma Sancheong bodies (Cheong et al, 2019). Among them, the Hapcheon and Sancheong bodies have clearly lower Nb contents (<20 μg/g) than those of the deep‐red Hida boulders (Figure 6b).…”

Section: Discussionmentioning

confidence: 99%

“…Other "A-type granites" reported from South China and the Korean peninsula (Cheong et al, 2019;Gao et al, 2019;Lee et al, 2021) (Li et al, 2012;Sun et al, 2011) (Figure 6a). In this regard, the claimed "A-type granites" in South China differ from the Hida boulders.…”

Section: Correlative A-type Granite In Far East Asiamentioning

confidence: 98%

“…In this regard, the claimed "A-type granites" in South China differ from the Hida boulders. Also from the southern Korean peninsula, three "A-type granites" were reported, that is, the 220 Ma Daegang, 217-227 Ma Hapcheon, and 219 Ma Sancheong bodies (Cheong et al, 2019). Among them, the Hapcheon and San- F I G U R E 6 Elemental crossplots of (a) Y versus Sr/Y (modified after Martin, 1986) and (b) Zr versus Nb of Ta content is unavailable at present owing to the absence of Ta measurement (Kim et al, 1998).…”

Section: Correlative A-type Granite In Far East Asiamentioning

confidence: 99%

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Late Triassic A‐type granite boulders in Lower Cretaceous conglomerate of the Hida belt, Japan: Their origin and bearing on the Yamato tectonic line in Far East Asia

et al. 2023

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To identify the origin of the Hida belt in central Japan, geochemistry and U–Pb age of zircons were analyzed for the extra‐large granitoid boulders in the Lower Cretaceous fluvial conglomerate of the Jinzu Group. This study clarified that the boulders of granitoids have geochemistry of typical A‐type granite, as characterized by high Nb + Y and high Ta + Yb values. U–Pb ages of igneous zircons from three individual granite boulders are concentrated at ca. 220 Ma (Late Triassic). As to Late Triassic A‐type granites, there is no corresponding body previously recognized within Japan, whereas identical A‐type granites occur in the eastern Songliao block on the immediate west of the Jiamusi block in NE China. The large size of boulders and the fluvial facies of the hosting conglomerate indicate their origin in the Hida belt per se, suggesting the cryptic and/or past occurrence of A‐type granite, rather than in NE China. Together with the eastern Songliao block (China), Laoelin‐Grodekov (LG) belt (Primorye, Russia), and Yamato Ridge (Japan Sea), the Hida belt forms a unique domain on the immediate west of GSC in Far East Asia, which is characterized commonly by the co‐occurrence of Permo‐Triassic and Jurassic granitoids, and probably with Late Triassic A‐type granite. These confirm that Hida belt represents an allochthonous unit tectonically emplaced onto the rest of Japan, which is composed of the Phanerozoic subduction‐related orogenic belt (Nipponides) developed along the Pacific side of Greater South China (GSC) since the Cambrian. For emphasizing a major geotectonic boundary of the Mesozoic granitoid provinces in Far East Asia, we propose the Yamato tectonic line between the easternmost Central Asian orogenic belt and GSC/Nipponides, which is traced for up to 3000 km from the Russia/China/North Korea border to SW Japan.

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Section: Discussionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Correlative A-type Granite In Far East Asiamentioning

confidence: 98%

Section: Correlative A-type Granite In Far East Asiamentioning

confidence: 99%

See 3 more Smart Citations

Late Triassic A‐type granite boulders in Lower Cretaceous conglomerate of the Hida belt, Japan: Their origin and bearing on the Yamato tectonic line in Far East Asia

et al. 2023

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Post‐collisional sedimentation of the Early Mesozoic Munamdong Formation in South Korea

Choi

Gihm

2022

Geological Journal

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Post-collisional processes cause uplift and exhumation of the overthickened crust together with the formation of sedimentary basins. To determine the influence of post-collisional processes on sedimentation, we investigated the Early Mesozoic Munamdong Formation of the Yuljeon Basin in the Korean Peninsula, deposited immediately after the orogenic events caused by the collision of the North China Block and South China Block. Facies analysis shows that the Munamdong Formation was deposited in a streamflow-dominated alluvial fan under tropical/subtropical climatic conditions. Vertically, the Munamdong Formation exhibits a fining-upward trend with changes in stacking patterns, from highly amalgamated channel conglomerates to floodplain fines, indicating a progressive increase in the creation of accommodation space exceeding sediment supply. Moreover, the types of gravels in the conglomerate beds and the petrographic characteristics of the sandstones suggest that the sediments were supplied rapidly from nearby Precambrian high-grade metamorphic rocks and Triassic post-collisional plutons. These results indicate the supply of sediment from restricted sources, implying that the drainage basins did not widen even during intermittent quiescence of basin subsidence. We interpret the finingupward trend and uniform composition of sediments to have resulted from rapid uplift and exhumation of the orogenic crust, together with rapid tectonic subsidence, possibly aided by post-collisional magmatism. This study shows that the Munamdong Formation reflects a close connection between surficial sedimentation and postcollisional tectonic processes. This study will help to fill the gap of understanding between deep crustal processes and post-collision sedimentation with insight into the Early Mesozoic tectonic environment of the East Asian continental margins.

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Petrogenesis of the Palaeoproterozoic (1.87 Ga) Damyang amphibolites in the north‐western margin of the Yeongnam Massif and tectonic implications of the Korean Peninsula

Wang

Lee

2023

Geological Journal

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The Yeongnam Massif is located in the southern part of the Korean Peninsula and holds key elements in understanding the Palaeoproterozoic tectonic evolution of north‐east Asia during the amalgamation of the Columbia supercontinent. In this study, we have conducted geochronological and geochemical studies on the mafic intrusive along the northern margin of the Yeongnam Massif. Sensitive high‐resolution ion microprobe (SHRIMP) U–Pb zircon dating on two amphibolite and one gabbro samples in the Damyang area show that the amphibolites crystallized at ~1.87 Ga and the gabbro crystallized at ~87.6 Ma. The 1.87 Ga Damyang amphibolites are simultaneous with the Muju and Okbang amphibolites along the northern margin of the Yeongnam Massif. They also show similar geochemical characteristics, including tholeiitic basalt composition, enriched Light Rare Earth Elements (LREE) and large ion lithosphile elements (LILEs), depleted high field strength elements (HFSEs), and slightly enriched but various Hf isotopes, indicating that they originated from an enriched but heterogeneous mantle source with fluid addition. Thus, the 1.87 Ga amphibolites along the northern margin of the Yeongnam Massif were probably emplaced in an arc‐related setting. Combined with the 2.02–1.96 Ga magmatism, it is proposed that the subduction might have lasted during the 2.02–1.85 Ga interval and mantle‐derived magma rose up due to the roll‐back process between 1.88–1.85 Ga.

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Magmatic response to the interplay of collisional and accretionary orogenies in the Korean Peninsula: Geochronological, geochemical, and O-Hf isotopic perspectives from Triassic plutons

Cited by 26 publications

References 171 publications

Late Triassic A‐type granite boulders in Lower Cretaceous conglomerate of the Hida belt, Japan: Their origin and bearing on the Yamato tectonic line in Far East Asia

Late Triassic A‐type granite boulders in Lower Cretaceous conglomerate of the Hida belt, Japan: Their origin and bearing on the Yamato tectonic line in Far East Asia

Post‐collisional sedimentation of the Early Mesozoic Munamdong Formation in South Korea

Petrogenesis of the Palaeoproterozoic (1.87 Ga) Damyang amphibolites in the north‐western margin of the Yeongnam Massif and tectonic implications of the Korean Peninsula

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