Geochemistry of primary-carbonate bearing K-rich igneous rocks in the Awulale Mountains, western Tianshan: Implications for carbon-recycling in subduction zone

Yang, Wu-Bin; Niu, He-Cai; Shan, Qiang; Chen, Hong‐Yuan; Hollings, Pete; Li, Ningbo; Yan, Shiguang; Zartman, Robert E.

doi:10.1016/j.gca.2014.04.033

Cited by 30 publications

(16 citation statements)

References 132 publications

(180 reference statements)

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“…Many studies have documented that the metasomatism of mantle source by subduction is predominantly constrained slab melting and/or slab devolatization (Turner and Hawkesworth, 1997;Gorman et al, 2006;Labanieh et al, 2012;Yang et al, 2014a). The presented chemical compositions of the calc-alkaline and shoshonitic rocks from the southern GXM are consistent with a mantle source affected by slab dehydration rather than melting of subducted sediments.…”

Section: Subduction-modified Mantle Sourcementioning

confidence: 63%

“…LOI values of the volcanic rocks usually reflect the presence of hydrous mineral phases (e.g., amphiboles), carbonates and/or secondary minerals (e.g., chlorites). The elevated LOI values of 0.68-2.77 wt.% for both intermediate and felsic volcanic rocks show no correlation with La/ Sm ratios, suggesting that alteration did not create significant changes of REE distribution patterns (e.g., Labanieh et al, 2012;Yang et al, 2014a). Chondrite-normalized REE patterns (Fig.…”

Section: Geochemistry Of the Mesozoic Volcanic Rocksmentioning

confidence: 94%

“…(2010)). Yang et al, 2014a). Amphiboles from mantle xenoliths display relatively high abundances of K, Sr, LREE, HFSE, and Ba in some cases, but very low abundances of Rb and Th (Ionov and Hofmann, 1995;Chazot et al, 1996).…”

Section: Subduction-modified Mantle Sourcementioning

confidence: 99%

“…6b). The mantlenormalized incompatible trace element patterns are distinguished by negative Nb-Ta-Ti and positive Pb anomalies, which are features of magma derived from suprasubduction zones (e.g., Boari et al, 2009;Yang et al, 2014a (Table 4), with e Nd (t) values ranging from 0.30 to 2.08. Compared with previous Sr-Nd isotopic data of the Mesozoic volcanic rocks from both southern and northern GXM, most of the Mesozoic volcanic rocks show the trend of lithospheric mantle melting, except the initial 87 Sr/ 86 Sr value of sample H13 that was affected by the mixing of old crustal components (Fig.…”

Section: Geochemistry Of the Mesozoic Volcanic Rocksmentioning

confidence: 99%

“…It has been proposed that partial melting of subducted sediments could modify the nature of the subcontinental lithospheric mantle (SCLM) and produce vein networks of clinopyroxene/ amphibole/phlogopite minerals within the mantle wedge (Pilet et al, 2008;Hermann and Rubatto, 2009;Skora and Blundy, 2010;Yang et al, 2014a). Partial melting of those pure vein minerals will generate ultrapotassic magmas, whereas increasing interaction between these veins and the surrounding mantle will decrease the alkaline component and result in relatively low-K http://dx.doi.org/10.1016/j.jseaes.2014.12.002 1367-9120/Ó 2015 Elsevier Ltd. All rights reserved.…”

Section: Introductionmentioning

confidence: 99%

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Geochronology, geochemistry and geodynamic implications of the Late Mesozoic volcanic rocks in the southern Great Xing’an Mountains, NE China

Yang

Niu

Cheng

et al. 2015

Journal of Asian Earth Sciences

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Section: Subduction-modified Mantle Sourcementioning

confidence: 63%

Section: Geochemistry Of the Mesozoic Volcanic Rocksmentioning

confidence: 94%

Section: Subduction-modified Mantle Sourcementioning

confidence: 99%

Section: Geochemistry Of the Mesozoic Volcanic Rocksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Geochronology, geochemistry and geodynamic implications of the Late Mesozoic volcanic rocks in the southern Great Xing’an Mountains, NE China

Yang

Niu

Cheng

et al. 2015

Journal of Asian Earth Sciences

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Geochemical heterogeneity along the Vema Fracture Zone, Indian Ocean: Mixing of melts from the Reunion plume and the Central Indian Ridge

et al. 2018

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We present here a scenario of magmatic and tectonic processes associated with the interaction between the Reunion mantle plume and the mantle beneath Central Indian Ridge (CIR) at the Vema Trench (VT) along the Vema Fracture Zone (VMFZ) in the Indian Ocean. The VMFZ offsets the CIR by about 300 km between 8°S and 10°S latitudes and holds probably the deepest point in the Indian Ocean, the Vema Trench, reaching to a depth in excess of 6,500 m. The trench has a width of about 5 km and extends for about 12 km in a NE-SW direction. Petrography and major and trace element concentrations collectively suggest that the rocks recovered from the VT are largely basaltic (pillow, columnar, dikes), composed of plagioclase and clinopyroxene, much evolved, and tholeiitic to calc-alkaline in composition. The REE signatures ([Sm/Yb vs. Sm] and [Ce/Sm] N vs. [Yb/Sm] N ) hint its source to a spinel lherzolite mantle with additional input from enriched mantle (EM-1). This EM-1 signature generally indicates presence of recycled ancient subducted oceanic crust in the mantle domain wherefrom the plume originates. The detailed petrological and geochemical studies of these rocks suggest dynamic processes involved in transfer of deep mantle-sourced material to mid-ocean ridges leading to geochemical heterogeneity. Trace element ratios (Hf/3-Th-Ta and Thn vs. Nbn) also suggest that the VMFZ basalt preserves the signature of mixing of ridge melt and plume melt.

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The genesis of high Ba‐Sr adakitic rocks: Insights from an Early Cretaceous volcanic suite in the central North China Craton

et al. 2020

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The origin of high Ba‐Sr magmatic suites with adakitic features has remained controversial, although they provide important clues on the evolution of continental lithosphere. Here, we present petrological, geochemical, zircon U–Pb and Lu‐Hf data from an Early Cretaceous volcanic suite of andesitic‐dacitic composition in the Laiyuan complex of the central North China Craton, with a view to gain insights on the magma source, petrogenesis, and tectonic implications. The volcanic suite represented by rocks of andesitic‐dacitic composition shows enrichment in light rare earth elements (LREE) and large‐ion lithophile elements (LILE), and depletion in high‐field‐strength elements (HFSE) with no obvious Eu anomalies. They also show typical adakitic features such as high Sr/Y and La/Yb ratios, as well as high Ba‐Sr concentrations. Zircon U–Pb geochronology indicates that these rocks were formed in Early Cretaceous during 131 to 127 Ma, with εHf(t) values ranging from −23.5 to −19.4, suggesting enriched lithospheric mantle source. The geochemical and isotopic data show that the enriched lithospheric mantle source experienced fluid‐related subduction metasomatism. The distinct geochemical features of these identified in our study including high Ba‐Sr concentrations and adakitic affinities were not only inherited from their magma source, but are also a result of fractional crystallization during magma evolution including amphibole‐dominated fractional crystallization at depth and limited plagioclase removal. The volcanism in the Taihang Mountains occurred under extensional regime triggered by the subduction and rollback of the Paleo‐Pacific slab during Late Jurassic to Early Cretaceous and consequent thermal‐mechanical erosion of the lithospheric mantle.

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Geochemistry of primary-carbonate bearing K-rich igneous rocks in the Awulale Mountains, western Tianshan: Implications for carbon-recycling in subduction zone

Cited by 30 publications

References 132 publications

Geochronology, geochemistry and geodynamic implications of the Late Mesozoic volcanic rocks in the southern Great Xing’an Mountains, NE China

Geochronology, geochemistry and geodynamic implications of the Late Mesozoic volcanic rocks in the southern Great Xing’an Mountains, NE China

Geochemical heterogeneity along the Vema Fracture Zone, Indian Ocean: Mixing of melts from the Reunion plume and the Central Indian Ridge

The genesis of high Ba‐Sr adakitic rocks: Insights from an Early Cretaceous volcanic suite in the central North China Craton

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