Post-collisional potassic granitoids from the southern and northwestern parts of the Late Neoproterozoic East African Orogen: a review

Küster, D.; Harms, U.

doi:10.1016/s0024-4937(98)00031-0

Cited by 113 publications

(51 citation statements)

References 64 publications

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“…Therefore, the felsic shoshonitic magma in the southern GXM is plausibly crustal derived. It is consistent with some previous documentation that felsic shoshonite can be derived by partial melting of the lower crust, following underplating by mantle-derived magma, e.g., post-collisional shoshonitic rocks from the East African Orogen (Kuster and Harms, 1998) and the Kunlun Orogenic Belt (Jiang et al, 2002).…”

Section: Origin Of the Felsic Shoshonitic Magmasupporting

confidence: 92%

“…This genetic model has been applied to shoshonitic series rocks associated with ultrapotassic rocks, high-K calc-alkaline rocks, or even to calc-alkaline rocks (e.g., Duggen et al, 2005;Altherr et al, 2008;Avanzinelli et al, 2009;Conticelli et al, 2009a;Yang et al, 2012). On the other hand, K-rich shoshonitic magma also can be derived from partial melting of the thickened lower crust, following underplating by mantlederived magma in a post-collisional extension setting (Kuster and Harms, 1998;Jiang et al, 2002;Campbell et al, 2014;Liu et al, 2014).…”

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: Origin Of the Felsic Shoshonitic Magmasupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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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“…They include subduction of continental crust (Deng, 1998), convective removal of the mantle lithosphere (Turner et al, 1996;Miller et al, 1999;Küster et al, 1998), extension along strike-slip faults (Yin et al, 1995), slab breakoff (Miller et al, 1999;Mahéo et al, 2009), and melting of a crustal block that has been thrusted into the upper mantle (Campbell et al, 2014). However, based on our results, the KIC volcanics are more likely…”

Section: Other Hypotheses Also Exist To Explain the Origin Of The Tibmentioning

confidence: 74%

Pamir Plateau formation and crustal thickening before the India-Asia collision inferred from dating and petrology of the 110–92 Ma Southern Pamir volcanic sequence

et al. 2017

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The formation of the Pamir is a key component of the India-Asia collision with major implications for lithospheric processes, plateau formation, land-sea configurations and associated climate changes. Although the formation of the Pamir is traditionally linked to Cenozoic processes associated with the IndiaAsia collision, the contribution of the Mesozoic tectonic evolution remains poorly understood. The Pamir was formed by the suturing of Gondwanan terranes to the south margin of Eurasia, however, the timing and tectonic mechanisms associated with this Mesozoic accretion remains poorly constrained. These processes are recorded by several igneous belts within these terranes, which are not well studied. Within the Southern Pamir, the Albian-

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“…Kröner et al 1987;Stern 1994;Küster and Harms 1998;Küster and Liégeois 2001;Stoeser and Frost 2006). The basement comprises reworked older crust of the cratons and juvenile crust.…”

Section: Geological Setting and Age Relationsmentioning

confidence: 99%

Nd, Pb, and Sr isotope composition of Late Mesozoic to Quaternary intra-plate magmatism in NE-Africa (Sudan, Egypt): high-μ signatures from the mantle lithosphere

Lucassen

Franz

Romer

et al. 2008

Contrib Mineral Petrol

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The isotopic composition of mafic small-volume intra-plate magmatism constrains the compositions of the sub-continental mantle sources. The Nd, Pb, and Sr isotope signatures of widespread late Mesozoic to Quaternary intra-plate magmatism in NE Africa (Sudan, South Egypt) are surprisingly uniform and indicate the presence of a high-µ (µ= 238 U/ 204 Pb) source in the mantle. The rocks are characterized by small ranges in the initial isotopic composition of Nd, Pb, and Sr and most samples fall within ε Nd ca 3 to 6, 206 Sr/ 86 Sr ca. 0.7028 to 0.7034. We interpret this reservoir as lithospheric mantle that formed beneath the Pan-African orogens and magmatic arcs from asthenospheric mantle, which was enriched in trace elements (U, Th, and light REE). Combining our new data set with published data of intra-plate magmatic rocks from the Arabian plate indicates two compositionally different domains of lithospheric mantle in NE-Africa -Arabia. The two domains are spatially related to the subdivision of the Pan-African orogen into a western section dominated by reworked cratonic basement (NEAfrica; high-µ lithospheric mantle) and an eastern section dominated by juvenile Pan-African basement (easternmost NE-Africa and Arabia; moderate µ lithospheric mantle). The compositions of the Pan-African lithospheric mantle and the MORB-type mantle of the Red Sea and Gulf of Aden spreading centers could explain the Nd-Pb-Sr isotopic compositions of the most pristine Afar flood basalts in Yemen and Ethiopia by mixtures of the isotopic composition of regional lithospheric and asthenospheric sources.

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Post-collisional potassic granitoids from the southern and northwestern parts of the Late Neoproterozoic East African Orogen: a review

Cited by 113 publications

References 64 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

Pamir Plateau formation and crustal thickening before the India-Asia collision inferred from dating and petrology of the 110–92 Ma Southern Pamir volcanic sequence

Nd, Pb, and Sr isotope composition of Late Mesozoic to Quaternary intra-plate magmatism in NE-Africa (Sudan, Egypt): high-μ signatures from the mantle lithosphere

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