U–Pb and Hf isotopic compositions of detrital zircons from the paragneisses of the Quanji Massif, NW China: Implications for its early tectonic evolutionary history

Chen, Nengsong; Lü, Zeng; Sun, Min; Wang, Qinyan; Kusky, Timothy

doi:10.1016/j.jseaes.2012.04.006

Cited by 99 publications

(42 citation statements)

References 96 publications

(130 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is bounded by the Qinghai Lake fault in the north and by the Early Paleozoic north Qaidam high-to ultrahigh-pressure belt in the south, respectively (Fig. 1) Chen et al 2013aChen et al , 2012Lu, 2002), unconformably overlain with a cover of Nanhua-Sinian to Mesozoic strata (Lu, 2002).…”

Section: Geological Backgroundmentioning

confidence: 99%

“…The medium-P/T type metamorphism at ~1.82 Ga, with regard to the LA-ICPMS U-Pb age of 1 816±19 Ma of metamorphic zircons from a small lens that transformed from the ~1.83-1.85 Ga metamafic dyke swarms (Chen et al, 2013a). The precursor sediments of the paragneiss suite were formed later than ~2.17 Ga as constrained by the detrital zircon LA-ICPMS U-Pb dating (e.g., Zhang et al, 2014;Chen et al, 2013aChen et al, , 2012Huang et al, 2011). The paragneiss suite was subjected to two metamorphisms.…”

Section: Geology and Petrography Of The Meta-mafic Dykesmentioning

confidence: 99%

See 1 more Smart Citation

Geochemistry of metamafic dykes from the Quanji massif: Petrogenesis and further evidence for oceanic subduction, Late Paleoproterozoic, NW China

et al. 2016

Self Cite

View full text Add to dashboard Cite

A suite of ~1.84-1.92 Ga metamafic dykes within the paragneiss suite (khondalite) of the Quanji massif in NW China, has been chosen in this study for further understanding the tectonic evolution and possible links to the global Columbia supercontinent. Occurrence and field relations suggest that they were formed coevally with a previous studied ~1.83-1.85 Ga metamafic dyke swarms. Whole-rock major and trace elemental geochemistry suggests precursor magma of the amphibolites being generated from a volcanic arc-related tectonic setting rather than a back-arc environment where the metamafic dyke swarms were emplaced. The metamafic dykes show enrichment of LREE and strongly negative anomalies for Ta-Nb, Zr-Hf and Ti, have high SiO 2 (49.3 wt.%-52.5 wt.%) but low MgO (6.40 wt.%-7.76 wt.%) contents and Mg # (Mg # =[100×(MgO/40.3)]/[MgO/40.3+FeO/71.8]) values (45.7-52.1), suggesting evolved precursor magma. The high values of La/Ta (22.2-42.8) and La/Nb (1.71-2.47), mildly negative ε Nd(t) values (-2.51-0.15), with depleted mantle model ages (T DM ) of 2.45-2.84 Ga, suggest that their precursor magmas were possibly derived from a subduction-related fluid metasomatized Archean sub-continental lithospheric mantle. This study provides further evidence for oceanic plate subduction prevailing before or around ~1.85 Ga, which confirms a prolonged subduction-accretion-collision history in the NW China which is possibly linked to the assembly of the Columbia supercontinent. KEY WORDS: metamafic dyke, geochemistry, petrogenesis, tectonic setting, Quanji massif, NW China. INTRODUCTIONRecent investigations on supercontinents suggest that the first coherent supercontinent on the Earth, termed Columbia was gradually assembled during 2.

show abstract

Section: Geological Backgroundmentioning

confidence: 99%

Section: Geology and Petrography Of The Meta-mafic Dykesmentioning

confidence: 99%

Geochemistry of metamafic dykes from the Quanji massif: Petrogenesis and further evidence for oceanic subduction, Late Paleoproterozoic, NW China

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…Some authors suggested that it is similar to the SCC (Wan et al, 2001;Wang et al, 2008). However, others considered it to be part of the NCC (Xiao et al, 2004;Lu et al, 2006;Chen et al, 2012;Gong et al, 2012;Zhang et al, 2012;Chen et al, 2013). The recognition of the Yingfeng rapakivi granites as being similar to those in the NCC, clearly indicates that the basement of the North Qaidam orogen and the NCC experienced contemporaneous magmatism at~1700 Ma.…”

Section: Basement Attribution and Implicationsmentioning

confidence: 99%

“…The Delingha Complex consists of Paleoproterozoic orthogneiss with zircon ages of~2390 to 2200 Ma and some of 2830 to 2570 Ma (Wan et al, 2001;Lu et al, 2002;Gong et al, 2012). The Dakedaban Group consists of paragneisses with zircon ages of~2200 to 1950 Ma (Hao et al, 2004;Huang et al, 2011;Chen et al, 2012), and the Wandonggou Group comprises Mesoproterozoic schists N.S. Chen et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Proterozoic rapakivi granites from the North Qaidam orogen, NW China: Implications for basement attribution

Wang

Castro

et al. 2015

Gondwana Research

View full text Add to dashboard Cite

“…I = Zongwulong Orogen; II = Oulongbuluke Micro‐Block; III = Shaliuhe‐Yuka high‐pressure metamorphic zone; IV = Qaidam Block; ① = South Qilian Southern Margin Fault; ② = Zongwulong Southern Margin Fault; ③ = Yuka‐Wulan Fault; ④ = Caledonian Tectonic Belt; ⑤ = North Qaidam Southern Margin Fault; ⑥ = Mengbei‐Lingjian‐Dahuo Fault; ⑦ = Golmud‐Xitie Mountain Fault. (modified after Chen, Xu, & Peng, ; Xu et al, ; Chen et al, ; Chen, Zhang, Sun, Wang, & Kusky, ; Song et al, ; Song et al, ; Peng, ; Peng et al, ; Zhang, Yu, & Mattinson, ; Li et al, ; Liu et al, )…”

Section: Introductionmentioning

confidence: 99%

Jurassic sedimentary provenances of the Hongshan and Huobuxun sags in the eastern segment of the northern Qaidam Basin: Basin–Mountain coupling

Shu

et al. 2017

Geological Journal

View full text Add to dashboard Cite

The Hongshan and Huobuxun sags are located in the eastern segment of the northern Qaidam Basin, and the provenances of Jurassic deposits in the two sags are unclear. Based on the tectonic setting of the northern Qaidam Basin before the Jurassic, this paper discusses provenances of the two sags by field geological survey, analysis of detritus, and heavy minerals of the Jurassic strata. The Jurassic sedimentation in the Hongshan Sag mainly came from the Zongwulong Orogen and the Oulongbuluke and Kuerleike mountains, and the Xitie Mountain was the secondary provenance. The Jurassic deposits of the Houbuxun Sag mainly came from the Xitie and Aimunike and Dadakenwula mountains. Because of the barrier of the Zongwulong Orogen, the sources of Jurassic deposits from the South Qilian Caledonian Orogen were much fewer. Four Jurassic provenance systems of the Hongshan and Huobuxun sags are recognized through heavy mineral assemblages: Kuerleike–Zongwulong, Zongwulong–Oulongbuluke, Xitie, and Aimunike–Dadakenwula mountains provenance systems. Based on the provenance analysis of the two sags, the paper further discusses the basin–mountain system in the eastern segment of the northern Qaidam Basin during the Jurassic. The two sags were not an open connected basin as considered by some geologists but two isolated sags. The Kuerleike, Oulongbuluke, and Zongwulong mountains together constituted the northern sedimentary boundary of the Hongshan Sag, and the southern sedimentary boundary was the Xitie Mountain. The northern boundary of the Huobuxun Sag was the Xitie, Aimunike, and Dadakenwula mountains, which separated the Hongshan Sag from the Huobuxun Sag, resulting in the two sags to evolve independently into the faulted basins during the Jurassic.

show abstract

U–Pb and Hf isotopic compositions of detrital zircons from the paragneisses of the Quanji Massif, NW China: Implications for its early tectonic evolutionary history

Cited by 99 publications

References 96 publications

Geochemistry of metamafic dykes from the Quanji massif: Petrogenesis and further evidence for oceanic subduction, Late Paleoproterozoic, NW China

Geochemistry of metamafic dykes from the Quanji massif: Petrogenesis and further evidence for oceanic subduction, Late Paleoproterozoic, NW China

Proterozoic rapakivi granites from the North Qaidam orogen, NW China: Implications for basement attribution

Jurassic sedimentary provenances of the Hongshan and Huobuxun sags in the eastern segment of the northern Qaidam Basin: Basin–Mountain coupling

Contact Info

Product

Resources

About