Petrogenesis of the 2115  Ma Haicheng mafic sills from the Eastern North China Craton: Implications for an intra-continental rifting

Wang, Xinping; Peng, Peng; Wang, Chong; Yang, Songbai

doi:10.1016/j.gr.2016.01.009

Cited by 86 publications

(16 citation statements)

References 128 publications

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“…Traditionally, the JLJB has been regarded as an intracontinental rift that underwent a simple opening-and-closing process [8,[10][11][12][13][14][15][16][17][18]. The major lines of evidence for the intracontinental rift model include the occurrences of bimodal volcanic rocks, rift-related boron deposits, A-type granites, and early extensional deformation, as well as metamorphism with an anticlockwise P-T path [8,10,11].…”

Section: Introductionmentioning

confidence: 99%

Geochronology and Zircon Hf Isotope of the Paleoproterozoic Gaixian Formation in the Southeastern Liaodong Peninsula: Implication for the Tectonic Evolution of the Jiao-Liao-Ji Belt

Liu

et al. 2022

Minerals

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The Jiao-Liao-Ji belt (JLJB), in the Eastern Block of the North China Craton, is a major Paleoproterozoic orogen and underwent a complicated tectonic evolution during 2.2–1.8 Ga. The Liaohe Group, an important stratigraphic unit in the JLJB, is key to understanding the complex evolution of this belt. In this paper, we present new detrital zircon U–Pb ages and Hf isotope data for meta-sedimentary rocks from the Gaixian Formation in different areas of the JLJB, in addition to compiled data for other formations of the Liaohe Group, to establish the depositional age and source of detrital materials of the group. U–Pb age results show that the age ranges of zircons from the different samples are broadly similar. The youngest zircon group is ca. 2.06 Ga, and the youngest single-grain age is ca. 2.0 Ga, constraining the depositional age of the Gaixian Formation to between 2.0 Ga and the metamorphic age of ca. 1.9 Ga. The zircon age data indicate that the provenance was primarily Archaean basement of the Nangrim Block and Paleoproterozoic volcanic rocks of the Li’eryu Formation. On the basis of the new geochronological data and results from previous studies, it is inferred that the JLJB underwent a successive process of rifting–subduction–collision, with the different formations of the Liaohe Group being deposited in different stages from rift to passive continental margin and then to active continental margin. Zircon Hf isotope data from the JLJB and adjoining Longgang and Nangrim blocks indicate that a major crustal growth event occurred at 2.9–2.5 Ga, followed by crustal growth and intense recycling of ancient crust at ca. 2.2 Ga.

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Section: Introductionmentioning

confidence: 99%

Geochronology and Zircon Hf Isotope of the Paleoproterozoic Gaixian Formation in the Southeastern Liaodong Peninsula: Implication for the Tectonic Evolution of the Jiao-Liao-Ji Belt

Liu

et al. 2022

Minerals

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“…Nb/La versus Th/Nb plot and (b) Ba/Zr versus Ti/Y ratio variation diagrams for determining crustal contamination. Symbols used are plus sign for average lower crust (Weaver & Tarney, 1984), half-filled square for N-MORB (Humphris et al, 1985), fullfilled square for E-MORB (Humphris et al, 1985), triangle for OIB (Sun, 1980) and cross for primordial mantle (McDonough et al, 1992) [Colour figure can be viewed at wileyonlinelibrary.com] crustal contamination, as these elements are crucial components of the continental crust (Pearce, 2008;Rollinson, 1993;Saunders et al, 1992;Wang et al, 2016). Nb/La versus Th/Nb diagram was used to assess wall-rock and basement contamination, as continental crustal rocks have low concentrations of Nb but high abundances of La and Th (Figure 11a, Baker et al, 2010;Ghatak & Basu, 2013;Stepanova et al, 2015).…”

Section: Crustal Contaminationmentioning

confidence: 99%

Geochemistry of 2.21 Ga giant radiating dyke swarm from the Western Dharwar Craton, India: Implications for petrogenesis and tectonic evolution

Yadav

Sarma

2021

Geological Journal

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The Western Dharwar Craton (WDC) exhibits numerous exposures of NNW-SSE to NW-SE trending mafic dykes. Geochemistry of four 2.21 Ga NNW-NW trending dykes and 21 other similar trending dykes provides new insights into the geochemical behaviour, mantle source characteristics, and tectonic history of mafic magmatic event, which have also affected the Eastern Dharwar Craton (EDC). Based on modal mineralogy and texture, these dykes can be classified into dolerite, olivine dolerite, gabbro, and olivine gabbro. They show basaltic to basaltic-andesitic composition and have sub-alkaline tholeiitic nature. La N /Lu N ratio classifies the dykes into two groups: Group I, with values close to 2, shows relatively flat REE patterns while, Group II, with values 4-6, has inclined REE patterns. In general, both groups show LREE enrichment and most of the samples exhibit negative Nb-Ta and Ti anomalies, indicating crustal contamination. However, negative Zr-Hf anomaly and low Th/Nb values (0.14-0.73) noticed within the samples preclude significant crustal inputs. Petrogenetic modelling using batch melting equation suggests that the dykes fractionated from two distinct mantle melts and had slightly different sources, both within the spinel-garnet transition zone. The overall composition of these 2.21 Ga dykes is consistent with a mantle plume-induced heterogeneous source that was previously modified by some ancient subduction event. Coeval dykes from EDC exhibit similar geochemical behaviour, mantle source characteristics, and tectonic history. These and other synchronous dykes from distant cratons, viz. Superior, Slave, Greenland, represent a 2.21 Ga large igneous province event, which is linked with the Sclavia/ Superia supercraton.

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“…After decades of arguments and studies on the process of tectonic evolution of JLJB, three major models were proposed, the rift opening and closing model (Li et al, 2005, 2006; Li & Zhao, 2007; Wang et al, 2016; Yang et al, 1988; Zhai & Santosh, 2013; Zhang & Yang, 1988), the arc‐continent collisional model (Bai, 1993; Faure et al, 2004; Li et al, 2017; Li, Chen, & Yan, 2018; Wang et al, 2015) and a complex rifting model involving a subducting and colliding process (Li, Chen, & Yan, 2018; Li, Li, & Chen, 2018; Liu et al, 2018; Zhao et al, 2012). The widespread A‐type Liaoji granites consisted of monzogranitic gneiss and biotite monzogranitic gneiss in the Kuandian area intruded at ~2.15 Ga under an extension setting.…”

Section: Discussionmentioning

confidence: 99%

“…As one of the three orogenic belts in the North China Craton (NCC) recognized in Zhao, Wilde, Cawood, & Lu, (1999), the Jiao‐Liao‐Ji Belt (JLJB) in Liaodong Peninsula comprises of voluminous Palaeoproterozoic meta‐sedimentary rocks and granites (Figure 1(a), (b)). Several studies have focused on the tectonic evolution of JLJB and suggested two different models, one being an arc–continent collision model (Bai, 1993; Faure, Lin, Monie, & Bruguier, 2004; Li, Chen, & Wei, 2017; Li, Chen, & Yan, 2018; Wang et al, 2015), and the other as an intra‐continental rift opening and closing model (Li et al, 2005, 2006; Li & Zhao, 2007; Wang, Peng, Wang, & Yang, 2016; Yang, Li, Yu, Gao, & Gao, 1988; Zhai & Santosh, 2013; Zhang & Yang, 1988). They are both popular but in contrast with each other (Zhao & Zhai, 2013).…”

Section: Introductionmentioning

confidence: 99%

Geochemistry of two types of Palaeoproterozoic granites, and zircon U–Pb dating, and Lu–Hf isotopic characteristics in the Kuandian area within the Jiao‐Liao‐Ji Belt: Implications for regional tectonic setting

Zhao

Zhang

et al. 2020

Geological Journal

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Palaeoproterozoic granites accompanied with granulite‐facies gneisses can be recognized in the Kuandian area, northern Jiao‐Liao‐Ji Belt (JLJB). This study highlights two episodes of Palaeoproterozoic magmatism, identified by granites and biotite monzogranitic gneisses herein. Zircon grains from biotite monzogranitic gneiss with homogeneous oscillatory zoning yielded a U–Pb age of 2,153 ± 16 Ma, in accordance with the age of zircon cores from the monzogranitic gneiss. Zircon grains from the two granites yielded upper intercept ages of 1,892 ± 38 Ma and 1,859 ± 36 Ma respectively. Monzogranitic gneiss samples are enriched in Th, Rb, Pb, U, and REE, but depleted in Sr and P. They have high 1,000 × Ga/Al ratios versus Zr, Ce, Nb, Y contents, which are usually interpreted as the features of classical A‐type granite that originated in a lithospheric extension setting. The ~1.89–1.86 Ga granite samples have relatively high Al, Rb, Th, U and low Sr, Zr, and Hf contents. These features, combined with the observation of minor apatite grains under the microscope are similar with the I‐type granites. In situ zircon Lu–Hf isotopic analyses revealed that ~1.89–1.86 Ga granite had a similar range and TDM2 ages with the monzogranitic gneiss, but with much lower εHf(t) values. The monzogranitic gneiss may have originated from an Archean crust, while the later granite may be derived from melting of the partial melting of the monzogranitic gneiss or the Archean crust that generated the monzogranitic gneiss. The ~1.89–1.86 Ga granites, together with the coeval S‐type granites in the JLJB, represent an orogeny process that may involve a Palaeoproterozoic subduction.

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Petrogenesis of the 2115 Ma Haicheng mafic sills from the Eastern North China Craton: Implications for an intra-continental rifting

Cited by 86 publications

References 128 publications

Geochronology and Zircon Hf Isotope of the Paleoproterozoic Gaixian Formation in the Southeastern Liaodong Peninsula: Implication for the Tectonic Evolution of the Jiao-Liao-Ji Belt

Geochronology and Zircon Hf Isotope of the Paleoproterozoic Gaixian Formation in the Southeastern Liaodong Peninsula: Implication for the Tectonic Evolution of the Jiao-Liao-Ji Belt

Geochemistry of 2.21 Ga giant radiating dyke swarm from the Western Dharwar Craton, India: Implications for petrogenesis and tectonic evolution

Geochemistry of two types of Palaeoproterozoic granites, and zircon U–Pb dating, and Lu–Hf isotopic characteristics in the Kuandian area within the Jiao‐Liao‐Ji Belt: Implications for regional tectonic setting

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