Precambrian tectonic attribution and evolution of the Songliao terrane revealed by zircon xenocrysts from Cenozoic alkali basalts, Xilinhot region, NE China

Pan, Shaokui; Zheng, Jianping; Griffin, William L.; Chu, Linlin; Xu, Yixian; Li, Yilong; Ma, Qiang; Wang, Dan

doi:10.1016/j.precamres.2014.05.022

Cited by 12 publications

(6 citation statements)

References 107 publications

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“…Zircon grains have been found in a variety of basaltic rocks (Pan et al, ; Wang, Li, Xie, Xu, & Li, ; Yang, Chen, Hou, Liu, & Liu, ; Zhang et al, ). However, SiO 2 and ZrO 2 are normally unsaturated in basaltic rocks.…”

Section: Discussionmentioning

confidence: 99%

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The basement and volcanic activities of the Xisha Islands: Evidence from the kilometre‐scale drilling in the northwestern South China Sea

Zhang

Qian

et al. 2019

Geological Journal

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As one of the microcontinents dispersed in the South China Sea (SCS), the Xisha microcontinent lacks the petrological evidence of the Cenozoic magmatic activity and basement. Well CK-2, as a full-coring kilometre-scale major scientific drilling in Xisha Islands in the northwestern SCS, drilled through the thick reefal limestone and into the underlying basaltic pyroclastic rocks basement. This paper presents zircon U-Pb age and mineral chemistry of clinopyroxenes from the basaltic pyroclastic rocks. Mineral composition of the clinopyroxenes suggests that most of the clinopyroxenes are composed of diopside, which contains relatively high Al(w (Al 2 O 3 ) = 5.03%-10.25%) and Ti(w (TiO 2 ) = 2.2%-4.95%). The clinopyroxene discrimination diagrams show that the primary magma is alkaline basalt and likely generated in an intraplate tectonic setting. U-Pb dating of zircons by LA-ICP-MS yielded a wide range of ages: 36-33, 116-104, 148-140, 207-196, 255-236, 440, 808-749, and 2,440-1185 Ma. The youngest group has an average age of 35.5 ± 0.9 Ma, which is considered as the maximum age of the basalt eruption. The 2440 ± 19 Ma, which is the oldest zircons in the SCS, are firstly found in the basaltic pyroclastic rocks from the SCS, suggesting that the SCS may contain very old materials. The ages of the inherited zircons are comparable to magmatic activities that occurred around the SCS, implying that they were probably once linked and an integrated part of Gondwana. The ancient continental basement has experienced multistages magmatic events.

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Section: Discussionmentioning

confidence: 99%

“…Generally, most of the zircon grains from basaltic rocks are considered as inherited zircons, which were derived from the crustal section and traversed by the host lava (Pan et al, ). Thus, inherited zircons can be used to indicate the concealed magma event (Condie, Belousova, Griffin, & Sircombe, ; Pereira et al, ).…”

Section: Discussionmentioning

confidence: 99%

The basement and volcanic activities of the Xisha Islands: Evidence from the kilometre‐scale drilling in the northwestern South China Sea

Zhang

Qian

et al. 2019

Geological Journal

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“…The Erguna, Xing'an, and Songliao continents (Fig. 2) have yielded Archean-Paleoproterozoic zircons (Wang et al, 2006;Zhou et al, 2012) and have minor confirmed components of Archean-Proterozoic basement (e.g., Wang et al, 2006;Han et al, 2011;Sun et al, 2013;Pan et al, 2014;Shao et al, 2015;Zhou et al, 2017). Further to the east, the Bureya-Jiamusi-Khanka microcontinents represent the easternmost boundary of the CAOS (e.g., Şengör et al, 1993;Jahn et al, 2004).…”

Section: Caosmentioning

confidence: 99%

Balkatach hypothesis: A new model for the evolution of the Pacific, Tethyan, and Paleo-Asian oceanic domains

Zuza

Yin

2017

Geosphere

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The Phanerozoic history of the Paleo-Asian, Tethyan, and Pacific oceanic domains is important for unraveling the tectonic evolution of the Eurasian and Laurentian continents. The validity of existing models that account for the development and closure of the Paleo-Asian and Tethyan Oceans critically depends on the assumed initial configuration and relative positions of the Precambrian cratons that separate the two oceanic domains, including the North China, Tarim, Karakum, Turan, and southern Baltica cratons. Existing studies largely neglect the Phanerozoic tectonic modification of these Precambrian cratons (e.g., the effects of India-Arabia-Eurasia convergence and post-Rodinia rifting). In this work we systematically restore these effects and evaluate the tectonic relationships among these cratons to test the hypothesis that the Baltica, Turan, Karakum, Tarim, and North China cratons were linked in the Neoproterozoic as a single continental strip, with variable along-strike widths. Because most of the tectonic boundaries currently separating these cratons postdate the closure of the Paleo-Asian and Tethyan Oceans, we are able to establish a >6000-km-long Neoproterozoic contiguous continent referred to here as Balkatach (named from the Baltica-Karakum-Tarim-North China connection). By focusing on the regional geologic history of Balkatach's continental margins, we propose the following tectonic model for the initiation and evolution of the Paleo-Asian, Tethyan, and Pacific oceanic domains and the protracted amalgamation and growth history of the Eurasian continent. (1) The early Neoproterozoic collision of the combined Baltica-Turan-Karakum-South Tarim continents with the linked North Tarim-North China cratons led to the formation of a coherent Balkatach continent. (2) Rifting along Balkatach's margins in the late Neoproterozoic resulted in the opening of the Tethyan Ocean to the south and unified Paleo-Asian and Pacific Oceans to the north (present-day coordinates). This process led to the detachment of Balkatach-derived microcontinents that drifted into the newly formed Paleo-Asian Ocean. (3) The rifted microcontinents acted as nuclei for subduction systems whose development led to the eventual demise of the Paleo-Asian Ocean during the formation of the Central Asian Orogenic System (CAOS). Closure of this ocean within an archipelago-arc subduction system was accommodated by counterclockwise rotation of the Balkatach continental strip around the CAOS. (4) Initial collision of central Balkatach and the amalgamated arcs and microcontinents of the CAOS in the mid-Carboniferous was followed by a bidirectional propagation of westward and eastward suturing. (5) The closure of the Paleo-Asian Ocean in the early Permian was accompanied by a widespread magmatic flare up, which may have been related to the avalanche of the subducted oceanic slabs of the Paleo-Asian Ocean across the 660 km phase boundary in the mantle. (6) The closure of the Paleo-Tethys against the southern margin of Balkatach proceeded diachronously, fr...

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“…The Songliao Block has a basement with affinities to both Mongolia and NE Gondwana, evidenced by the inherited zircon age spectra in Cenozoic basalts ranging from ~550 Ma and ~0.8, 1.8, and 2.5 Ga (Pan et al, ). It is mainly covered by the Cretaceous Songliao Basin (Feng et al, ) with terrestrial clastic sedimentary rocks and also Yingcheng Formation volcanic rocks (Zhang et al, ).…”

Section: Geological Backgroundmentioning

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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Precambrian tectonic attribution and evolution of the Songliao terrane revealed by zircon xenocrysts from Cenozoic alkali basalts, Xilinhot region, NE China

Cited by 12 publications

References 107 publications

The basement and volcanic activities of the Xisha Islands: Evidence from the kilometre‐scale drilling in the northwestern South China Sea

The basement and volcanic activities of the Xisha Islands: Evidence from the kilometre‐scale drilling in the northwestern South China Sea

Balkatach hypothesis: A new model for the evolution of the Pacific, Tethyan, and Paleo-Asian oceanic domains

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

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