Geochemistry and tectonomagmatic affinity of the Yungbwa ophiolite, SW Tibet

Miller, Christine; Thöni, Martin; Frank, Wolfgang; Schuster, Ralf; Melcher, Frank; Meisel, Thomas; Zanetti, A.

doi:10.1016/s0024-4937(02)00217-7

Cited by 130 publications

(87 citation statements)

References 61 publications

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“…IS-0000 from GIGCAS. (Hou et al, 2004b;Qin et al, 2014) and this study, Gangdese Miocene adakites (Gao et al, 2010a;Hou et al, 2004bHou et al, , 2012Wang et al, 2010;Xu et al, 2010), Yarlung Tsangpo ophiolite (Miller et al, 2003;Niu et al, 2006;Xu and Castillo, 2004;Zhang et al, 2005), Linzizong volcanic rocks (Gao et al, 2008;Mo et al, 2007), Indian Ocean pelagic sediment (Benothman et al, 1989), Himalayan basement (Vidal et al, 1982). Cretaceous adakites: Zhu et al (2009);Jurassic porphyries: Yang et al (2011); Miocene adakites: Gao et al (2010b), Hou et al (2013), Hou et al (2004b) and Wang et al (2010).…”

Section: Acknowledgmentsmentioning

confidence: 59%

The formation of Qulong adakites and their relationship with porphyry copper deposit: Geochemical constraints

Liu

Ling

et al. 2015

Lithos

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Section: Acknowledgmentsmentioning

confidence: 59%

The formation of Qulong adakites and their relationship with porphyry copper deposit: Geochemical constraints

Liu

Ling

et al. 2015

Lithos

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“…6). This feature is a likely artifact of significant depletion as a result of high degrees of partial melting (Miller et al, 2003). In chondrite-normalized plots, the analyzed samples display similar depleted patterns (Fig.…”

Section: Trace Elementsmentioning

confidence: 68%

Multiple episodes of melting, depletion, and enrichment of the Tethyan mantle: Petrogenesis of the peridotites and chromitites in the Jurassic Skenderbeu massif, Mirdita ophiolite, Albania

Yang

Dilek

et al. 2017

Lithosphere

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The Jurassic Mirdita ophiolite in Albania displays a structural-geochemical transition from a mid-ocean ridge-type (MOR) oceanic lithosphere in the west to a suprasubduction zone (SSZ) type in the east across an ~30-km-wide fossil Tethyan oceanic domain. We investigated the upper mantle peridotites of the Skenderbeu massif, situated at this transition within the ophiolite, to document the geochemical fingerprint of the inferred tectonic switch. The peridotites comprise harzburgites and dunites with podiform chromitite deposits. We present new whole-rock major element, trace element, rare earth element (REE), and platinum group element chemistry to evaluate their mantle melt evolution and petrogenesis. Harzburgites have high average CaO, Al 2 O 3 , and REE contents, and contain Al-rich pyroxene and spinel with lower Cr contents. Dunites have low average CaO, Al 2 O 3 , and REE values, and contain Al-poor clinopyroxene and high-Cr spinel. Modeling of trace element compositions of the harzburgites suggests as much as ~10%-15% melting, whereas the trace element compositions of the dunites indicate ~20%-25% melting. The harzburgites and dunites and chromitites represent, respectively, the products of low-degree partial melting in a MOR setting, and the products of high-degree partial melting and refertilization in a forearc mantle. The harzburgites resulted from rock-melt interactions between ascending melts and residual peridotites beneath a MOR, whereas the dunites and the high-Cr chromitites formed as a result of interactions between boninitic melts and mantle peridotites in a mantle wedge. The Skenderbeu mantle units thus constitute a geochemical-petrological archive of a transition from MOR to SSZ melt evolution in space and time within the same ocean basin.

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“…Chung et al (2009) suggested that the Kuday dykes were derived from the lower crust. As discussed above, the Kuday and Mayum rocks have geochemical characteristics similar to the adakitic (2008) and Yue and Ding (2006); Yarlung MORB is from Miller et al (2003), Mahoney et al (1998), Xu and Castillo (2004), and Zhang et al (2005); lower crust in the western Lhasa terrane is from Miller et al (1999); Shoshonitic dykes are from Zhao et al (2009); adakites related to slab melting are from Kay (1978), Kay et al (1993), and Stern and Kilian (1996); Early Cretaceous granite and rhyolites in the western Lhasa terrane are from Zhu et al (2009); Northern Himalayan gneiss and granites are from Zhang et al (2004); High Himalayan Crystalline Series is from Harris et al (1988); mafic granulite in the east Himalayan syntaxis is from Xu et al (2010) (other data sources and symbols are as in Figs. 1 and 3).…”

Section: Origin Of Adakitic Rocks On the South Side Of The Iysmentioning

confidence: 89%

Geochemical variations in Miocene adakitic rocks from the western and eastern Lhasa terrane: Implications for lower crustal flow beneath the Southern Tibetan Plateau

Chen

Zhao

et al. 2011

Lithos

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Geochemistry and tectonomagmatic affinity of the Yungbwa ophiolite, SW Tibet

Cited by 130 publications

References 61 publications

The formation of Qulong adakites and their relationship with porphyry copper deposit: Geochemical constraints

The formation of Qulong adakites and their relationship with porphyry copper deposit: Geochemical constraints

Multiple episodes of melting, depletion, and enrichment of the Tethyan mantle: Petrogenesis of the peridotites and chromitites in the Jurassic Skenderbeu massif, Mirdita ophiolite, Albania

Geochemical variations in Miocene adakitic rocks from the western and eastern Lhasa terrane: Implications for lower crustal flow beneath the Southern Tibetan Plateau

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