Recycling of sediment into the mantle source of K-rich mafic rocks: Sr–Nd–Hf–O isotopic evidence from the Fushui complex in the Qinling orogen

Wang, Hao; Wu, Ya‐Pan; Li, Chao Ran; Zhao, Tian; Qin, Zheng Wei; Zhu, Liu Qin; Gao, Shan; Zheng, Jian Ping; Liu, Xiao Ming; Zhou, Lian; Yang, Zhen; Yang, Shaoming

doi:10.1007/s00410-014-1062-y

Cited by 66 publications

(24 citation statements)

References 71 publications

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“…6c) is further support for a mantle source compositionally modified by subducted sediments (e.g. Feldstein and Lange, 1999;Wang et al, 2006Wang et al, , 2014.…”

Section: Evolution From Eocene Normal Arc Calc-alkaline Magmatism Tomentioning

confidence: 99%

Long-lived, stationary magmatism and pulsed porphyry systems during Tethyan subduction to post-collision evolution in the southernmost Lesser Caucasus, Armenia and Nakhitchevan

et al. 2016

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“…6c) is further support for a mantle source compositionally modified by subducted sediments (e.g. Feldstein and Lange, 1999;Wang et al, 2006Wang et al, , 2014.…”

Section: Evolution From Eocene Normal Arc Calc-alkaline Magmatism Tomentioning

confidence: 99%

Long-lived, stationary magmatism and pulsed porphyry systems during Tethyan subduction to post-collision evolution in the southernmost Lesser Caucasus, Armenia and Nakhitchevan

et al. 2016

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“…3.10b are calculated in ppm. From Müller et al (1992a) et al 2014; Liu et al 2014;Wang et al 2014;Aghazadeh et al 2015). However, there is a general consensus that potassic magmas cannot be derived by partial melting of normal mantle peridotite, but require heterogeneous mantle sources which have been metasomatically enriched in LILE and LREE (Edgar 1987;Foley and Peccerillo 1992;Guo et al 2013;Kuritani et al 2013;Tan et al 2013b;Bucholz et al 2014;Aghazadeh et al 2015;Yang et al 2015).…”

Section: Theoretical Basis For Discrimination Between Potassic Igneoumentioning

confidence: 95%

“…3.6). This might be explained by a greater role for the alkali meltinduced metasomatism of the mantle wedge, which is believed to yield stronger enrichments in these particular elements than fluid-induced metasomatism (Bailey et al 1989;Zhang et al 1995;Sajona et al 2000;Ishimaru et al 2007;Wang et al 2014). Partial melts derived from subducted sediments are characterized by relatively high LREE contents (Guo et al 2013).…”

Section: Theoretical Basis For Discrimination Between Potassic Igneoumentioning

confidence: 96%

“…In arc settings, the partial melting may be achieved by modification of mantle geotherms in proximity to the cold subducted slab (Taylor et al 1994), while the metasomatic enrichment may be achieved by overprinting and veining of the mantle wedge by either volatile-and LILE-enriched fluids (Saunders et al 1980(Saunders et al , 1991Grove et al 2002;Till et al 2012) and/or by actual alkali, low-temperature, LILEand LREE-enriched partial melts (i.e. adakites) derived during dehydration of the subducted oceanic slab (Pearce 1983;Bailey et al 1989;Sun and McDonough 1989;Zhang et al 1995;Sajona et al 2000;Vigouroux et al 2008;Campbell et al 2014;Wang et al 2014). It is still debated whether these metasomatizing fluids or melts are derived from subducted sediments (Rogers and Setterfield 1994;Prelevic et al 2010;Mallik et al 2015) or from altered oceanic crust (Nowell et al 2004;Gaffney et al 2007).…”

Section: Theoretical Basis For Discrimination Between Potassic Igneoumentioning

confidence: 98%

“…2. Subducted marine sediment, characterized by low Sr/Nd (<7), Ce/Pb (<5), Ba/La (<50), and Nb/La ratios (<0.5), but high Th/Ta (>100), Th/La (>1.5), Th/Yb (>100), and Ba/Nb ratios (>130) (Rogers et al 1985;Miller et al 1999;Woodhead et al 2001;Liu et al 2014;Mallik et al 2015), high Pb, Ba, and La contents (Sun and McDonough 1989;Wang et al 2014), and by negative Eu anomalies in chondritenormalized REE spidergram plots (McLennan and Taylor 1981;Guo et al 2013;Liu et al 2014) that are unrelated to plagioclase fractionation (Miller et al 1999). 3.…”

Section: Theoretical Basis For Discrimination Between Potassic Igneoumentioning

confidence: 99%

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Tectonic Settings of Potassic Igneous Rocks

Müller

Groves

2015

Potassic Igneous Rocks and Associated Gold-Copper Mineralization

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Petrogenesis and tectonic implications of Maoniushan monzogranites in the western margin of the Yangtze Block, Southwest China: Constraints from geochemistry, zircon U–Pb geochronology, and Hf–Nd–Sr isotopes

Liu

et al. 2022

Geological Journal

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The Neoproterozoic granites along the western margin of the Yangtze Block are crucial for understanding the evolution of the Rodinia supercontinent and crust–mantle interaction. Based on a regional geological survey, this study analyses the zircon U–Pb geochronology, Lu–Hf isotope, whole‐rock Sr–Nd isotopes, and geochemistry of the Maoniushan granites along the western margin of the Yangtze Block and discusses the Neoproterozoic tectonic evolution history of the Mianning–Maoniushan belt. The results show that the Maoniushan granites belong to calc‐alkaline weak peraluminous monzogranite. The granites are enriched in large‐ion lithophile elements (i.e., Rb, Sr, Cs, and Ba) but relatively depleted in high‐field‐ strength elements (i.e., Nb, Ta, U, and Th). The zircon saturation temperature (TZr) ranges from 628 to 766°C, and the weighted average 206Pb/238U ages of zircon range from 771 ± 30 to 759 ± 26 Ma. The εHf(t) values range from −2.0 to +7.2, with TDM2 model ages ranging from 1,797 to 1,208 Ma. The whole‐rock Sr–Nd isotopic data show (87Sr/86Sr)i ratios of 0.7039–0.7093, and the εNd(t) values range from +1.25 to +1.76 with TDM2 model ages ranging from 1,303 to 1,344 Ma. These findings indicate the presence of deep Mesoproterozoic crustal materials in the source area. The Maoniushan monzogranites belong to I‐type granite, which is formed by the partial melting of the basic rocks and pelites in the ancient lower crust due to the metasomatism of fluids from the subducted oceanic crust. The Maoniushan monzogranites may be formed in the process of transformation from regional thickening to thinning under the oceanic crust subduction setting.

show abstract

Recycling of sediment into the mantle source of K-rich mafic rocks: Sr–Nd–Hf–O isotopic evidence from the Fushui complex in the Qinling orogen

Cited by 66 publications

References 71 publications

Long-lived, stationary magmatism and pulsed porphyry systems during Tethyan subduction to post-collision evolution in the southernmost Lesser Caucasus, Armenia and Nakhitchevan

Long-lived, stationary magmatism and pulsed porphyry systems during Tethyan subduction to post-collision evolution in the southernmost Lesser Caucasus, Armenia and Nakhitchevan

Tectonic Settings of Potassic Igneous Rocks

Petrogenesis and tectonic implications of Maoniushan monzogranites in the western margin of the Yangtze Block, Southwest China: Constraints from geochemistry, zircon U–Pb geochronology, and Hf–Nd–Sr isotopes

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