Age and geochemistry of the early Mesoproterozoic A-type granites in the southern margin of the North China Craton: Constraints on their petrogenesis and tectonic implications

Deng, Xiaoqin; Zhao, Taiping; Peng, Touping

doi:10.1016/j.precamres.2016.07.018

Cited by 47 publications

(18 citation statements)

References 105 publications

(225 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During Middle–Late Triassic, magmatism was followed to formed alkaline granitoids, A – type granites and rhyolites, and mafic–ultramafic rocks, as well as the deposition of widespread coeval sedimentary rocks with bidirectional provenances, indicating that this region and adjacent areas were dominated by an extensional tectonic setting after the final closure of the ocean basin (Deng et al, ; Du et al, ; Shi et al, ; Sun et al, ; Wang, Xu, Xu, Gao, & Ge, ; Wang, Xu, Pei, Wang, et al, ; Wu et al, ; Wu et al, ; Wu et al, ; Wu et al, 2007; Xiao et al, ). The presence of widespread unmetamorphosed Late Triassic sedimentary rocks in both the eastern CAOB to the north and the northern margin of the NCC contrasts sharply with the metamorphosed Late Permian to Early Triassic sedimentary units in central Jilin Province and has an unconformable contact with underlying Late Permian to Early Triassic strata and intrusions (Cao et al, ; Dong et al, ; Du et al, ; Lin et al, ; Wang, Xu, Pei, Wang, et al, ; Xiao et al, ; Zhou et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…The southwards subduction of the Paleo‐Asian Ocean plate should be responsible for the presence of the late Carboniferous to early Permian calc‐alkaline igneous rocks in the northern margin of the NCC (Cao et al, ). The northern margin of the NCC is known as the “granite ocean”, and contains voluminous Late Palaeozoic to Mesozoic granitoids and sedimentary rocks, minor amounts of Early Palaeozoic (Deng, Zhao, & Peng, ; Du et al, ; Shi et al, ; Sun, Wu, Li, & Lin, ; Wang, Xu, Xu, Gao, & Ge, ; Wang, Xu, Pei, Wang, et al, ; Wu et al, ; Wu et al, ; Wu, Sun, Li, & Wang, Xu, Pei, Wang, Li, & Cao, ; Wu et al, 2007; Xiao et al, ). In this area, Permian strata are widely distributed (Figure ).…”

Section: Geological Background and Samplingmentioning

confidence: 99%

“…The northern margin of the NCC is known as the "granite ocean", and contains voluminous Late Palaeozoic to Mesozoic granitoids and sedimentary rocks, minor amounts of Early Palaeozoic (Deng, Zhao, & Peng, 2016;Du et al, 2016;Shi et al, 2016;Sun, Wu, Li, & Lin, 2001;Wang, Xu, Xu, Gao, & Ge, 2015;Wu et al, 2011;Wu et al, 2002;Wu, Sun, Li, & Wang, Xu, Pei, Wang, Li, & Cao, 2001;Xiao et al, 2015). In this area, Permian strata are widely distributed ( Figure 2).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Detrital zircon U–Pb dating and Hf isotope study of late Palaeozoic sedimentary rocks in central–eastern Jilin Province, NE China: Constraints for tectonic evolution of the eastern segment of the Paleo‐Asian Ocean

et al. 2019

View full text Add to dashboard Cite

This paper reports in situ U–Pb ages and Hf isotopic data on detrital zircons from Palaeozoic strata in central‐eastern Jilin Province, NE China, with the aim of constraining the timing of final closure of the Paleo‐Asian Ocean and the tectonic evolution of the eastern segment of the Central Asian Orogenic Belt (CAOB). Zircons from Middle to Late Permian Fanjiatun and Yangjiagou formations in central Jilin Province are characterized by four major groups of age populations (2.5–2.3 Ga, 1.9–1.7 Ga, 1.3–1.0 Ga, and Late Palaeozoic ages). The Paleo‐Mesoproterozoic and Cambrian zircons have positive εHf(t) values, suggesting that the source was mainly locally derived from the CAOB, whereas a lesser amount of Archean zircons with positive εHf(t) values, indicating that source from the North China Craton (NCC). The Phanerozoic zircons have both positive and negative εHf(t) values indicates that material from bidirectional provenances in the CAOB and the NCC. However, Late Permian Kaishantun Formation in eastern Jilin Province contain a single group of Phanerozoic zircons with positive εHf(t) values, distinct from known igneous zircons in the NCC, suggesting a local source. These observations, along with the results of previous studies on Middle–Late Permian igneous rocks in Jilin Province, indicate that the eastern segment of the Paleo‐Asian Ocean underwent the initial closure in central Jilin Province during the Middle Permian and the final closure in eastern Jilin Province in the Late Permian–Early Triassic. The detrital zircon geochronological data clearly record two stages of tectonic evolution and the scissor‐like closure model of the Paleo‐Asian Ocean in the eastern segment of the CAOB.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Geological Background and Samplingmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Detrital zircon U–Pb dating and Hf isotope study of late Palaeozoic sedimentary rocks in central–eastern Jilin Province, NE China: Constraints for tectonic evolution of the eastern segment of the Paleo‐Asian Ocean

et al. 2019

View full text Add to dashboard Cite

show abstract

“…A substantial amount of late Paleoproterozoic to Mesoproterozoic magmatism also developed along the southern margin of the NCC, including mafic dyke swarms 3,4,11 , volcanic rocks 9,11 , and granite rocks 12,[15][16][17][22][23][24] . Notably, some of these rocks show an affinity to A-type granite (Fig.…”

Section: Geological Backgroundmentioning

confidence: 99%

Geochemistry and tectonic significance of late Paleoproterozoic A-type granites along the southern margin of the North China Craton

Wang

Yang

Siebel

et al. 2020

Sci Rep

View full text Add to dashboard Cite

The Longwangzhuang pluton is a typical example of Paleoproterozoic A-type granite intrusions at the southern margin of the North China Craton. This pluton is composed of arfvedsonite granite and minor aegirine-augite granites. Samples from both granite types display similar zircon U-Pb ages with 207 U-206 Pb ages of 1612 ± 19 Ma [mean square weighted deviation (MSWD) = 0.66] and 1609 ± 24 Ma (MSWD = 0.5), respectively. The granites exhibit similar high silica (SiO 2 = 71.1-73.4 wt.%), high alkaline (Na 2 o + K 2 o = 8.10-9.26 wt.%, K 2 o/na 2 o > 1), and low Al 2 o 3 (11.8-12.8 wt. %) contents and metaluminous to weakly peraluminous bulk chemistry. The chemical variations of the Longwangzhuang pluton suggest the effects of mineral fractionation. In addition, all samples show typical characteristics of A-type granites, such as high 10000Ga/Al ratios (4.10-7.28), high FeO tot /(FeO tot + MgO) ratios (0.88-0.99), and high Zr (484-1082 ppm), Ce (201-560 ppm), and Y (78-156 ppm) contents. The ε nd (t) values and the (206 pb/ 204 Pb) t , (207 pb/ 204 Pb) t , and (208 pb/ 204 Pb) t ratios of the arfvedsonite granite samples vary from −4.6 to-5.3, 15.021 to 17.349, 15.241 to 15.472, and 33.206 to 36.905, respectively, and those for the aegirine-augite granite sample amount at −0.2, 14.421, 15.175, and 33.706. The distinct and variable Nd and Pb isotope values indicate the presence of heterogeneous protoliths. Based on its geochemistry, its low initial Pb isotope ratios, and its enrichment in Nd isotopes, we infer that the Longwangzhuang A-type granite is the partial melting product of basement rocks such as the Taihua Group gneisses accompanied by some involvement of juvenile material from the mantle. Together with published data from other Paleoproterozoic A-type granite plutons exposed at the southern margin of the craton, our findings suggest that these granites had a similar origin. Furthermore, geochemically, they can be divided into two groups: A 2-type, which formed earlier (~1.8-1.6 Ga), and A 1-type, which formed later (~1.6-1.5 Ga). Combining this information with the variations in whole-rock Nd and zircon Hf isotopic composition at ca. 1.6 Ga, we propose that tectonic transformation from post-orogenic to anorogenic magmatism occurred at the southern margin of the North China Craton at that time.

show abstract

“…The Luoquan Formation, and its equivalents, extend over 2,000 km across the Central China Orogen and its type section was established at Luoquan village in 1961 (34° 00.27′ N, 112° 44.73′ E) (Guan et al., ; Mou, ; Mu, ; Yin et al., ). The southern NCC includes a range of Archean to early Palaeoproterozoic basement rocks that are mantled by late Palaeoproterozoic to Phanerozoic cover sequences (Deng, Zhao, & Peng, ; Yin et al., ). The basement mostly comprises Neoarchean‐Palaeoproterozoic metamorphic rocks that include graphite‐bearing gneisses, greenstones, biotite gneisses, marbles and banded iron formations (Yin et al., ).…”

Section: Introductionmentioning

confidence: 99%

New perspectives on the Luoquan Glaciation (Ediacaran‐Cambrian) of North China

Heron

Vandyk

et al. 2018

The Depositional Record

View full text Add to dashboard Cite

The Luoquan Formation provides a record of the Ediacaran-Cambrian glaciation in the North China Craton. The sedimentary record is well expressed in the Henan Province along the central China orogen, and includes a rich archive of striated pavements, diamictites, and dropstone-bearing laminites. A reappraisal of the sedimentological evolution of the Luoquan Formation notes the following features. First, striated pavements with crosscutting striations do not necessarily record multiple phases of glacial (re)advance, but more likely originate through the development of sticky spots in a palaeo-ice stream setting. The development of obstacles, basal adfreezing, or porosity variations in the subglacial substrate resulted in curvilinear and bifurcating striae, which can superficially be mistaken for crosscutting striae in isolated sections. Second, "massive" diamictites as previously described are in fact commonly weakly stratified, and there is a continuum from dropstone-bearing rhythmically bedded shales and siltstones, through stratified diamictites to massive diamictites. This continuum is believed indicative of deposition by rain out from debris rich ice for those diamictites with less pronounced stratification, in contrast to the mass flow hypothesis previously suggested. Third, the presence of large-scale, recumbent folds with associated thrusts is described at the type section. The suite of large-scale deformation structures, measuring >30 m in amplitude, is sealed by undeformed diamictites. The deformation structures are interpreted to reflect soft-sediment deformation produced through ice bulldozing. Integrating these observations, it is proposed that the Luoquan Formation was deposited in a large proglacial lake setting, with a range of ice contact to ice distal environments recognized. K E Y W O R D Scambrian, China, Ediacaran, glacial, glaciation

show abstract

Age and geochemistry of the early Mesoproterozoic A-type granites in the southern margin of the North China Craton: Constraints on their petrogenesis and tectonic implications

Cited by 47 publications

References 105 publications

Detrital zircon U–Pb dating and Hf isotope study of late Palaeozoic sedimentary rocks in central–eastern Jilin Province, NE China: Constraints for tectonic evolution of the eastern segment of the Paleo‐Asian Ocean

Detrital zircon U–Pb dating and Hf isotope study of late Palaeozoic sedimentary rocks in central–eastern Jilin Province, NE China: Constraints for tectonic evolution of the eastern segment of the Paleo‐Asian Ocean

Geochemistry and tectonic significance of late Paleoproterozoic A-type granites along the southern margin of the North China Craton

New perspectives on the Luoquan Glaciation (Ediacaran‐Cambrian) of North China

Contact Info

Product

Resources

About