Petrogenesis of early Yanshanian highly evolved granites in the Longyuanba area, southern Jiangxi Province: Evidence from zircon U-Pb dating, Hf-O isotope and whole-rock geochemistry

Tao, Jihua; Li, Wu‐Xian; Li, Xian‐Hua; Cen, Tao

doi:10.1007/s11430-013-4593-6

Cited by 50 publications

(16 citation statements)

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“…The quartz diorite has initial 87 Sr/ 86 Sr ratios of 0.7049–0.7051 and ε Nd ( t ) of −10.0 to −11.4, whereas the Xishuiquan granite has lower ( 87 Sr/ 86 Sr) i ratios of 0.7032–0.7035, and higher ε Nd ( t ) values of −6.5 to −7.1 (Table ). The ( 87 Sr/ 86 Sr) i ratios of the Xishuiquan granite are too low to be diagnostic, but the ε Nd ( t ) values allow us to determine the magmatic origin of these rocks (Tao, Li, Li, & Cen, ; Wu, Li, Yang, & Zheng, ; Wu, Zhao, Sun, Wilde, & Yang, ).…”

Section: Resultsmentioning

confidence: 99%

Geochronology, geochemistry, and tectonic significance of Permian intrusive rocks from the Shaolanghe region, northern margin of the North China Craton

et al. 2017

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In situ zircon U–Pb ages and Hf isotopic data, whole‐rock major and trace element contents, and Sr–Nd isotopic compositions are reported for Permian intrusive rocks at Shaolanghe in Eastern Inner Mongolia in order to explore the magmatic origin and tectonic significance of these rocks for the evolution of the northern margin of the North China Craton. Three intrusive rocks, quartz diorite, Xishuiquan granite, and Xinglong granite, yield zircon U–Pb ages of 285.9 ± 3.1, 274.2 ± 2.9, and 260.0 ± 8.4 Ma, respectively. The quartz diorite and Xishuiquan granite belong to the high‐K calc‐alkaline series, enriched in large ion lithophile elements (e.g., Rb) and depleted in high field strength elements (e.g., Nb and Ti). They are defined as I‐type granites. The quartz diorite has initial 87Sr/86Sr ratios of 0.7049–0.7051, εNd(t) values of −10.0 to −11.4, and εHf(t) values of −15.2 to −9.9. The εHf(t) values of the Xishuiquan granite (−4.8 to 4.0) vary in discrete segments, whereas the εNd(t) values (−12.9 to −13.3) are consistent with those of the quartz diorites (−10.0 to −11.4). A magma mixing model is proposed for the formation of the quartz diorites of the Shaolanghe region, and the Xishuiquan granite was likely derived from partial melting of the Paleoproterozoic crust with involvement of mantle components. Geochemical analyses show that the tectonic setting of the northern margin of the North China Craton during the late Palaeozoic was an Andes‐type active continental margin associated with subduction of the Paleo‐Asian Ocean plate.

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Section: Resultsmentioning

confidence: 99%

Geochronology, geochemistry, and tectonic significance of Permian intrusive rocks from the Shaolanghe region, northern margin of the North China Craton

et al. 2017

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“…It is interesting that all studied Yanshanian two-mica granites show tetrad effects with their REE patterns. Our previous studies suggested that granites with Lanthanide tetrad effects were probably subjected to the hydrothermal alteration by magmatic fluids (Tao et al, 2013). Therefore, muscovites from the Yanshanian two-mica granites are most likely secondary.…”

Section: Discrimination Between Primary and Secondary Muscovitesmentioning

confidence: 95%

“…The Yanshanian granites are highly evolved I-type granites (Tao et al, 2013). Biotite granite and two-mica granite are the major rock types.…”

Section: Granite Complex Descriptionmentioning

confidence: 99%

Mineralogical feature and geological significance of muscovites from the Longyuanba Indosinian and Yanshannian two-mica granites in the eastern Nanling Range

Tao

Cai

et al. 2014

Sci. China Earth Sci.

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Emplacement P-T condition estimations using granites are important for understanding metamorphic and erosional processes of orogenic belt. Granites are widespread in South China and a majority of them are peraluminous. Particularly, over 91% of the Indosinian granites exposed in the region are peraluminous in composition. It is extremely hard to determine the pressure of intrusion of these peraluminous granites due to the absence of amphibole, a good mineral barometer commonly identified in metaluminous granites. Muscovite is a common mineral in peraluminous granites, certain kind of it could be used as a mineral barometer to constrain the emplacement pressure of peraluminous granites. In this paper, results of petrographic and geochemical studies of muscovites from the Indosinian and early Yanshanian two-mica granites at the Longyuanba in the eastern Nanling Range are reported. Based on petrographic studies, the primary muscovite can be discriminated from the secondary muscovites. Muscovites from the Indosinian two-mica granites are enriched in Ti, Al, Mg, and Na, and depleted in Fe and Mn. Geochemically, these muscovites were considered as primary, whereas those from the Yanshanian two-mica granites fall into the area of secondary muscovite on discrimination diagrams. Barometer estimations show that pressures calculated for primary muscovites are accurate, but those calculated for secondary muscovites are overestimated. The average pressure of emplacement of the Longyuanba Indosinian two-mica granites is 5.9 kbar, corresponding to ~19 km in depth, suggesting that the Indosinian granitic magmas were probably generated by partial melting of a thickened crust root in a compressional tectonic setting. emplacement depth, muscovite, peraluminous granites, Longyuanba complex, Nanling Range Citation:Tao J H, Li W X, Cai Y F, et al. 2014. Mineralogical feature and geological significance of muscovites from the Longyuanba Indosinian and

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“…To account for the petrogenesis of these highly fractionated I-type granites, several processes can be envisaged: (a) differentiation of mantle-derived mafic magma (e.g. Han et al, 1997); (b) partial melting of a mixed source rock produced by intercalation of underplated mafic magma in lower crustal rocks (Wu et al, 2003;, and (c) mixing of mantle-and crustally derived magmas, which, in turn, underwent fractional crystallization (Chen et al, 2000;Qiu et al, 2008;Zhu et al, 2009;Tao et al, 2013). On the other hand, many petrogenetic models have been proposed for the origins of high-K calc-alkaline felsic I-type magmas, including: (1) crustal assimilation and fractional crystallization (AFC) of mantle-derived basaltic magma (Chen and Arakawa, 2005;Cribb and Barton, 1996;DePaolo,1981;Moghazi, 2003); (2) mixing of mantle derived magmas with crustal-derived materials (Clemens et al, 2009;Hildreth and Moorbath, 1988;Küster and Harms, 1998;Rottura et al,1998;Yang et al, 2012).…”

Section: Petrogenesismentioning

confidence: 99%

Carboniferous Highly Fractionated I‐type Granites from the Kalamaili Fault Zone, Eastern Xinjiang, NW China: Petrogenesis and Tectonic Implications

Song

Wang

Tong

et al. 2019

Acta Geologica Sinica (Eng)

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Carboniferous magmatism is one of the most important tectonothermal events in the Central Asian Orogenic Belt (CAOB). However, the final closure time of the Kalamaili Ocean between East Junggar and Harlik Mountain is still debated. Early Carboniferous (332 Ma) and late Carboniferous (307-298 Ma) granitic magmatism from Kalamaili fault zone have been recognized by LA-ICP-MS zircon U-Pb dating. They are both metaluminous highly fractionated I-type and belong to the high-K calc-alkaline. The granitoids for early Carboniferous have zircon ε Hf (t) values of −5.1 to +8.5 with Hf model ages (T DM2 ) of 1.78-0.83Ga, suggesting a mixed magma source of juvenile material with old continental crust. Furthermore, those for late Carboniferous have much younger heterogeneous zircon ε Hf (t) values (+5.1 to +13.6) with Hf model ages (T DM2 =1.03-0.45 Ga) that are also indicative of juvenile components with a small involvement of old continental crust. Based on whole-rock geochemical and zircon isotopic features, these high-K granitoids were derived from melting of heterogeneous crustal sources or through mixing of old continental crust with juvenile components and minor AFC (assimilation and fractional crystallization). The juvenile components probably originated from underplated basaltic magmas in response to asthenospheric upwelling. These Carboniferous highly fractionated granites in the Kalamaili fault zone were probably emplaced in a post-collisional extensional setting and suggested vertical continental crustal growth in the southern CAOB, which is the same or like most granitoids in CAOB. This study provides new evidence for determining the post-accretionary evolution of the southern CAOB. In combination with data from other granitoids in these two terranes, the Early Carboniferous Heiguniangshan pluton represents the initial record of post-collisional environment, suggesting that the final collision between the East Junggar and Harlik Mountain might have occurred before 332 Ma.

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Petrogenesis of early Yanshanian highly evolved granites in the Longyuanba area, southern Jiangxi Province: Evidence from zircon U-Pb dating, Hf-O isotope and whole-rock geochemistry

Cited by 50 publications

References 49 publications

Geochronology, geochemistry, and tectonic significance of Permian intrusive rocks from the Shaolanghe region, northern margin of the North China Craton

Geochronology, geochemistry, and tectonic significance of Permian intrusive rocks from the Shaolanghe region, northern margin of the North China Craton

Mineralogical feature and geological significance of muscovites from the Longyuanba Indosinian and Yanshannian two-mica granites in the eastern Nanling Range

Carboniferous Highly Fractionated I‐type Granites from the Kalamaili Fault Zone, Eastern Xinjiang, NW China: Petrogenesis and Tectonic Implications

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