The Early Cretaceous evolution of SE China: Insights from the Changle–Nan'ao Metamorphic Belt

Li, Ye; Ma, Changqian; Xing, Guangfu; Zhou, Hanwen

doi:10.1016/j.lithos.2015.05.014

Cited by 26 publications

(16 citation statements)

References 90 publications

(40 reference statements)

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“…(a) TAS classification diagram (Na 2 O + K 2 O vs. SiO 2 ; after Maitre et al, ) and (b) K 2 O vs. SiO 2 diagram (after Peccerillo & Taylor, ) for Late Mesozoic volcanic rocks in East Mongolia. Data of the Great Xing'an Range are taken from literatures of Fan et al (); Meng et al (); Dong et al (2014); and Li, Ma, Xing, and Zhou ()…”

Section: Resultsmentioning

confidence: 99%

Petrogenesis and tectonic implication of the Late Mesozoic volcanic rocks in East Mongolia

et al. 2018

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This paper presents new geochemical and geochronological data of the Late Mesozoic volcanic rocks in East Mongolia. These volcanic rocks belong to high‐K calc‐alkaline and shoshonitic series and exhibit features of bimodal rocks. The mafic rocks have elevated incompatible trace element concentrations and significantly negative Nb, Ta, and Ti anomalies, with 87Sr/86Sr(i) and ƐNd(t) values of 0.70502–0.70572 and −1.72459 to +1.720736, respectively, which suggest that the mafic magma was derived from a lithospheric mantle source that might have been metasomatized by subduction‐derived fluids, experienced fractional crystallization, and was contaminated by crustal materials. The felsic rocks have similar rare earth element patterns to the mafic rocks but show much more significantly negative Eu and Sr anomalies. The felsic rocks have higher 87Sr/86Sr(i) values of 0.706496–0.71104 than the mafic rocks but similar ƐNd(t) values (−0.28003 to +2.928506) to the mafic ones. These data indicate that the felsic rocks originated from partial melting of a crustal source that is dominated by juvenile mafic rocks. Our new K‐Ar dating, together with previous data, shows that the Late Mesozoic volcanism in East Mongolia took place during the Late Jurassic‐Early Cretaceous between ca. 155 and 99 Ma. The model of back‐arc extension, possibly induced by slab rollback of the westward subducted Pacific Plate and the subduction zone retreat, can explain the geodynamic setting and the eastward younging trend of the Late Mesozoic volcanism in East Mongolia and in adjacent NE China.

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Section: Resultsmentioning

confidence: 99%

Petrogenesis and tectonic implication of the Late Mesozoic volcanic rocks in East Mongolia

et al. 2018

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“…100 Ma dextral displacement (D 5 ) are also recognized in our study area. The structural evolution within the CNSZ from 129 Ma toward 100 Ma was generally considered to be formed under collisional setting (Li et al, 2015;Wei et al, 2015). Our data from the Kinmen Island reveals the opposite.…”

Section: Correlation To the Structural Evolution Of The Changle-nanao Shear Zonementioning

confidence: 62%

“…Such study was uncommonly applied for the structural evolution of Cretaceous batholiths along the coast of SE Asia (Wang and Lu, 2000;Chen et al, 2002). One major reason is that the deformation events were interpreted as syn-magmatism, hence zircon U-Pb geochronology was dominantly employed to decipher the structural evolution (Tong and Tobisch, 1996;Shi, 2011;Li et al, 2015). To better constrain the timing of our reconstructed deformation events of the Kinmen Island, the available 40 Ar/ 39 Ar geochronology data are compiled and discussed below (Figure 12).…”

Section: Discussion Thermochronological Constraints On the Reconstructed Structural Evolutionmentioning

confidence: 99%

“…Other than the diachronous distribution of Cretaceous magmatism, the NE-SW striking CNSZ is another major structural feature along the coastal region of SE Asia (Chen et al, 2002;Li et al, 2015;Wei et al, 2015). By integrating data and observations in previous studies (Wang and Lu, 2000; Shi, 2011;Wei et al, 2015), six deformation events were identified within the CNSZ based on their structural styles, metamorphic conditions and proposed relative timing.…”

Section: Correlation To the Structural Evolution Of The Changle-nanao Shear Zonementioning

confidence: 97%

“…Three major magmatic periods of: ∼187 Ma, 147-130 Ma, and 125-90 Ma were noted, but the Cretaceous magmatism mostly affected areas along the southeast coast (e.g., Liu et al, 2016 and references within). The Cretaceous geological features resulted from the tectono-magmatic events induced by the subduction and retreat of the Paleo-Pacific plate beneath the South China Block (Liu et al, 2012;Zhang et al, 2012;Wang et al, 2013;Li Z. et al, 2014;Li et al, 2015;Mao et al, 2014). These Cretaceous rocks consist of high-K calcalkaline I-type granites with minor A-type granites and gabbros as well as acidic to basaltic volcanic rocks (Li, 2000;Zhou et al, 2006;Li Z. et al, 2014).…”

Section: Geological Backgroundmentioning

confidence: 99%

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Structural Evolution of Extended Continental Crust Deciphered From the Cretaceous Batholith in SE China, a Kinmen Island Perspective

Huang

Yeh

2020

Front. Earth Sci.

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The continental crust of southeast Asia underwent from thickening, thinning to almost rifting during the Mesozoic era as the active continental margin transformed into a passive one. Such crustal thinning history is well-preserved in the Kinmen Island, as the lower crustal granitoids retrograded and rapidly exhumed to surface that were crosscutted by mafic dike swarm. Kinmen Island is situated on the SE coast of Asia, featured by the widespread Cretaceous magmatism as the Paleo-Pacific plate subducted and rollbacked underneath the South China block. Although these complex magmatism are well reported and studied, their associated structural evolution and plate kinematics have not been clearly deciphered. Detailed field mapping, structural measurement, and petrographic analysis of the Kinmen Island were conducted. Up to five deformation events accompanied with five relevant magmatic episodes as well as their corresponding kinematic setting are reconstructed. The ∼129 Ma Chenggong Tonalite (G 1 ) preserved all deformation events identified in this study, which marks the lower bound timing of all reported events. D 1 formed a gneiss dome with the Taiwushan Granite (∼139 Ma) at the core bounded by moderately dipping gneissic foliation (S 1 ) as crust extended. D 2 formed subhorizontal S-tectonite (S 2 ) with further exhumation of D 1 gneiss dome due to middle-to-lower crustal flow associated with further crustal thinning. D 3 formed a sinistral ENE-WSW striking steeply S dipping shear belts with well-developed S/C/C' fabrics. The moderately E-plunging lineation on C surface indicates its transtensional nature. Widespread garnet-bearing leucogranite (G 2 ) associated with decompressional melting showed long lasting intrusion prior to D 2 until post D 3 . D 4 was the intrusion of biotite-bearing Tienpu Granite (∼100 Ma; G 3 ) that truncated G 1 , G 2 , and all fabrics, which was followed by the intrusion of E-W striking, steeply dipping biotite-bearing pegmatite (G 4 ) as the crust further extended. The youngest deformation event (D 5 ) was NE-SW striking subvertical mafic dike swarm (G 5 ; 90-76 Ma) due to mantle upwelling through significantly thinned crust. By integrating the structural evolution and the previously reported strain pattern, we delineate the slab rollback direction of the Paleo-pacific plate, which changed from northeastward (129∼114 Ma) to southeastward (107∼76 Ma). This plate kinematic movement switched during 114-107 Ma.

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Provenance of sediments in western Foothills and Hsuehshan Range (Taiwan): A new view based on the EMP monazite versus LA-ICPMS zircon geochronology of detrital grains

Chen

Lee

Lin

et al. 2019

Earth-Science Reviews

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The Early Cretaceous evolution of SE China: Insights from the Changle–Nan'ao Metamorphic Belt

Cited by 26 publications

References 90 publications

Petrogenesis and tectonic implication of the Late Mesozoic volcanic rocks in East Mongolia

Petrogenesis and tectonic implication of the Late Mesozoic volcanic rocks in East Mongolia

Structural Evolution of Extended Continental Crust Deciphered From the Cretaceous Batholith in SE China, a Kinmen Island Perspective

Provenance of sediments in western Foothills and Hsuehshan Range (Taiwan): A new view based on the EMP monazite versus LA-ICPMS zircon geochronology of detrital grains

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