Geochemistry of 1.78 Ga A-type granites along the southern margin of the North China Craton: implications for Xiong'er magmatism during the break-up of the supercontinent Columbia

Cui, Minli; Zhang, Lianchang; Zhang, Baolin; Zhu, Mingtian

doi:10.1080/00206814.2012.736709

Cited by 38 publications

(14 citation statements)

References 67 publications

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“…As shown in Fig. 9, the zircon ε Hf (t) values and the whole-rock ε Nd (t) values of A-type granites at the southern NCC mostly plot in the evolution field of the Taihua Group, indicating that they were most likely derived from partial melting of basement rocks like those of the Taihua Group 12,[14][15][16]34 . The zircon ε Hf (t) values of the LWZ pluton vary between -6.4 and -1.1, and the Hf model ages fall within the range of 2.4-2.6 Ga 17,24 .…”

Section: Discussionmentioning

confidence: 92%

“…1.8 Ga and ca. 1.5 Ga 12, [14][15][16]34 . Moreover, several typical A-type granites at the northern NCC are also considered here, such as the Miyun A-type granite and the Shachang rapakivi granite 2,[6][7][8] .…”

Section: Discussionmentioning

confidence: 99%

“…The older A-type granites of the Motianzhai, Guijiayu, Shicheng, and Luoning plutons (>1.74 Ga) have low ε Hf (t) values of -13.9 to -5.3 12,14,15 . A-type granites younger than ca.…”

Section: Geological Setting and Implicationsmentioning

confidence: 99%

“…12. Summary data for early Proterozoic A-type granties of the NCC are from the literature 2,[6][7][8]12,[14][15][16][17]24,34 and are listed in Table SA.…”

Section: Geological Setting and Implicationsmentioning

confidence: 99%

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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

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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.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

“…The older A-type granites of the Motianzhai, Guijiayu, Shicheng, and Luoning plutons (>1.74 Ga) have low ε Hf (t) values of -13.9 to -5.3 12,14,15 . A-type granites younger than ca.…”

Section: Geological Setting and Implicationsmentioning

confidence: 99%

“…12. Summary data for early Proterozoic A-type granties of the NCC are from the literature 2,[6][7][8]12,[14][15][16][17]24,34 and are listed in Table SA.…”

Section: Geological Setting and Implicationsmentioning

confidence: 99%

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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

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“…The metamorphic rocks of Taihua Group include amphibolite, gneiss and marbles, which are the wall-rocks of the orebodies. Some neutral-mafic volcanic rocks are also distributed sporadically within the metamorphic rocks of Taihua Group, but belong to the Early Proterozoic Xiong'er Group of (Zhao et al, 2004;Cui et al, 2013). Limited strata of the Middle Proterozoic Ruyang Group, composed of marine debris and marble, may occur.…”

Section: Geological Settingmentioning

confidence: 96%

Mineralogical and microfabric characteristics of magnetite in the Wuyang Precambrian BIFs, southern North China Craton: Implications for genesis and depositional processes of the associated BIFs

Zhai

Zhang

et al. 2014

Journal of Asian Earth Sciences

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Geochemistry of Late Palaeoproterozoic (1.69 Ga) A‐type Mayong granitoids in Shillong Plateau, north‐east India: Implication for anorogenic magmatism during Columbia Supercontinent cycle

et al. 2021

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The Late Palaeoproterozoic Mayong granitoids of Assam constitute an important component of the continental crust and the Basement Gneissic Complex in the northern extension of the Shillong Plateau, north‐east India. The basement rocks of Shillong Plateau are considered as a continuation of the Central Indian Tectonic Zone. In this study, emphasis is given on the new zircon U–Pb age, Hf isotopic composition, and the tectonic implication of Late Palaeoproterozoic Mayong granitoids. The Mayong granitoids are essentially composed of quartz—K‐feldspar—plagioclase—biotite—hornblende as major minerals and titanite—zircon—allanite—bastnaesite—apatite—ilmenite as the accessory mineral phase. They show typical geochemical characteristics of A‐type granites, such as high silica (average 71.86 wt%), alkalies (average 8.01 wt%), Rb, Zr, Nb, Ga, and rare earth elements (except Eu); high FeOt/MgO and Ga/Al ratios, and low CaO, MgO, Ba, Sr, P, Eu, and Ti concentrations. Laser ablation inductively coupled plasma mass spectrometry zircon U–Pb dating indicates that they were emplaced at ~1,687 ± 35 Ma during the large‐scale magmatism of Late Palaeoproterozoic to Early Mesoproterozoic periods. Their zircon Hf model (TDM2) ages (1,833–2,257 Ma) in conjunction with trace elemental characteristics suggest that they were generated by the reworking/recycling of Early Palaeoproterozoic crust in an intraplate extensional tectonic environment. Thus, we conclude that these A‐type Late Palaeoproterozoic Mayong granitoids of the Shillong Plateau probably have a close genetic linkage with the magmatic event of the Columbia Supercontinent cycle during 1,687 ± 35 Ma.

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Geochemistry of 1.78 Ga A-type granites along the southern margin of the North China Craton: implications for Xiong'er magmatism during the break-up of the supercontinent Columbia

Cited by 38 publications

References 67 publications

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

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

Mineralogical and microfabric characteristics of magnetite in the Wuyang Precambrian BIFs, southern North China Craton: Implications for genesis and depositional processes of the associated BIFs

Geochemistry of Late Palaeoproterozoic (1.69 Ga) A‐type Mayong granitoids in Shillong Plateau, north‐east India: Implication for anorogenic magmatism during Columbia Supercontinent cycle

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