Paleomagnetism of late Mesozoic rocks from northeastern China: the role of the Tan-Lu fault in the North China Block

Uchimura, H.; Kono, Michikata; Tsunakawa, Hideo; Kimura, Gaku; Wei, Q.; Hao, Tianyao; Liu, H.

doi:10.1016/0040-1951(96)00016-9

Cited by 41 publications

(35 citation statements)

References 25 publications

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“…Diminishing clockwise motion since the Jurassic fits well with the period of active motion of the Tan-Lu fault (Klimetz 1983). It should be noted that similar clockwise rotations of paleomagnetic poles were also observed in Benxi area, China (Uchimura et al 1996).…”

Section: Discussionsupporting

confidence: 49%

Paleomagnetism and U-Pb geochronology of the late Cretaceous Chisulryoung Volcanic Formation, Korea: tectonic evolution of the Korean Peninsula

Jeong

Doh

et al. 2015

Earth Planet Sp

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Late Cretaceous Chisulryoung Volcanic Formation (CVF) in southeastern Korea contains four ash-flow ignimbrite units (A1, A2, A3, and A4) and three intervening volcano-sedimentary layers (S1, S2, and S3). Reliable U-Pb ages obtained for zircons from the base and top of the CVF were 72.8 ± 1.7 Ma and 67.7 ± 2.1 Ma, respectively. Paleomagnetic analysis on pyroclastic units yielded mean magnetic directions and virtual geomagnetic poles (VGPs) Our best estimates of the paleopoles for A1, A3, and A4 are in remarkable agreement with the reference apparent polar wander path of China in late Cretaceous to early Paleogene, confirming that Korea has been rigidly attached to China (by implication to Eurasia) at least since the Cretaceous. The compiled paleomagnetic data of the Korean Peninsula suggest that the mode of clockwise rotations weakened since the mid-Jurassic. Such interesting variation of vertical rotations in the Korean Peninsula might result from the strike-slip motions of major faults developed in East Asia (the Tancheng-Lujiang fault to the northwest and the Korea-Taiwan strait fault to the southeast), near-field tectonic forcing of the subducting Pacific Plate beneath the Eurasian Plate, and far-field expressions of the India-Asia collision.

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Section: Discussionsupporting

confidence: 49%

Paleomagnetism and U-Pb geochronology of the late Cretaceous Chisulryoung Volcanic Formation, Korea: tectonic evolution of the Korean Peninsula

Jeong

Doh

et al. 2015

Earth Planet Sp

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“…from compressive to extensive) as shown by controversy on Tan-Lu fault timing (e.g. Uchimura et al, 1996;Lin et al, 2003;Zhu et al, 2005) or tectonic setting in Yanshan belt (e.g. Dong et al, 2008;Zhang et al, 2008;Davis et al, 2009;Hu et al, 2009).…”

Section: Timing and Tectonic Historymentioning

confidence: 97%

Metamorphic Core Complexes vs. synkinematic plutons in continental extension setting: Insights from key structures (Shandong Province, eastern China)

Charles

Gumiaux

Augier

et al. 2011

Journal of Asian Earth Sciences

141

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a b s t r a c tContinental extension is an important geodynamical process mostly diagnostic of a peculiar behaviour of the crust accommodated by geological structures that highlight these specific conditions in the crust. Though a Metamorphic Core Complex (MCC) reveals a much stronger crustal extension than a synkinematic pluton, the nature of those two structures implies different implications in terms of crustal extension mechanisms and geodynamic significations. In eastern Asia, a major continental extensional event occurred during Mesozoic and early Cenozoic times. The resulting various extensional events described in previous studies consist in large intracontinental basins, important volcanism, emplacement of plutons in the upper crust and exhumation of MCCs. An efficient description of MCCs and plutons in eastern Asia is essential to discriminate important differences of those two structures in terms of strain amount undergone by continental crust and geodynamic significations. In that way, an integrated structural and geophysical study has been realized to precisely discriminate the structure in the Jiaodong Peninsula (Shandong Province, eastern China), previously regarded as simple sheared plutons. A succession of three main stages have been identified all pertaining to a NW-SE extensional setting: (1) the exhumation of the Late Jurassic-Early Cretaceous Linglong MCC below the SE-dipping Linglong detachment fault, (2) the emplacement of the Guojialing syntectonic pluton below the N-dipping extensional Guojialing intracrustal shear zone (130-124 Ma) and (3) a penetrative brittle normal faulting associated with gold mineralizations ($120 Ma). As a result, the maximum amount of extension in Jiaodong Peninsula, characterized by partially-melted lower to middle crust upward into the Linglong MCC should be revised to Late Jurassic-Early Cretaceous period.

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“… Doh and Piper [1994] reported 30° post‐Cretaceous clockwise rotation of the Baekunsan syncline outside the northern Gyeongsang Basin, but Kang and Kim [2000a] suggested that this clockwise rotation could be correct if it ended before emplacement of the Bulguksa granitic rocks. Recent paleomagnetic studies report that clockwise rotation of the Korean Peninsula may be associated with post‐Cretaceous clockwise rotation of the eastern block of the Tan‐Lu fault with respected to the North China block [ Ma et al , 1993; Uchimura et al , 1996; Zhao et al , 1999; Uno , 2002; Itoh et al , 2006]; the rotation event seems to have affected the entire Korean Peninsula [ Uno and Chang , 2000; Uno , 2000]. Therefore, our model is not only able to interpret clearly the complexity of geological phenomena in the Gyeongsang Basin but also contributes to constrain the tectonic evolution of East Asia quantitatively.…”

Section: Discussionmentioning

confidence: 99%

Geometric model of conjugate faulting in the Gyeongsang Basin, southeast Korea

et al. 2008

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The NNE trending dextral Yangsan fault system and the WNW trending sinistral Gaum fault system comprise a conjugate set that cuts the Cretaceous Gyeongsang Basin along the SE margin of the Korean Peninsula. These faults evidently formed under compressional stress accompanied by a progressive 12° block rotation, calculated from a geometric model incorporating angles between conjugate fault sets, widths of fault domains, and measured fault displacements. The angle between paleomagnetic declinations in the set of conjugate fault domains increases with age, suggesting incremental block rotation that included overall rotation of the entire Gyeongsang Basin (or the Korean Peninsula) with respect to Eurasia. The model accounts for Yucheon Group volcanism, subsequent caldera subsidence in the Uiseong subbasin, and volcanism in the Miryang subbasin, all produced by regional tension. The tectonic regime of the Gyeongsang Basin apparently evolved from compression to extension at ∼50 Ma, reflecting India‐Eurasia collision and opening of the Sea of Japan (East Sea).

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Paleomagnetism of late Mesozoic rocks from northeastern China: the role of the Tan-Lu fault in the North China Block

Cited by 41 publications

References 25 publications

Paleomagnetism and U-Pb geochronology of the late Cretaceous Chisulryoung Volcanic Formation, Korea: tectonic evolution of the Korean Peninsula

Paleomagnetism and U-Pb geochronology of the late Cretaceous Chisulryoung Volcanic Formation, Korea: tectonic evolution of the Korean Peninsula

Metamorphic Core Complexes vs. synkinematic plutons in continental extension setting: Insights from key structures (Shandong Province, eastern China)

Geometric model of conjugate faulting in the Gyeongsang Basin, southeast Korea

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