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• W2014789152 endingPage "250" @default.
• W2014789152 startingPage "237" @default.
• W2014789152 abstract "Ultrapotassic lavas are widespread throughout southern Tibet and are generally thought to have formed from magmas generated by partial melting of an enriched mantle source that was metasomatized during earlier subduction events. Here, we report new geochemical and Sr–Nd–Pb–Os isotope data for Miocene ultrapotassic rocks within the Sailipu area of the western Lhasa terrane, southern Tibet. The Sailipu ultrapotassic rocks are enriched in the large ion lithophile elements relative to the high field strength elements, and have extremely radiogenic Sr (87Sr/86Sr(i) = 0.714480–0.727323), Pb (206Pb/204Pb = 18.414–18.787, 207Pb/204Pb = 15.693–15.749, 208Pb/204Pb = 39.439–39.765), and Os isotopic signatures (187Os/188Os(i) = 0.1095–0.37454), and unradiogenic Nd (εNd(t) = − 11.5 to − 15.2) isotopic compositions. These geochemical and isotopic characteristics, coupled with high K2O (> 5 wt.%) and MgO (5.20–13.70 wt.%) concentrations, Mg# values of 68–76, high Rb/Sr (0.13–0.95) and low Ba/Rb (3.33–12.3) ratios, and the relatively low Os contents and radiogenic Os isotopic compositions of the Sailipu ultrapotassic rocks, do not support any significant crustal contamination. Instead, we consider these rocks to be analogous to the Cenozoic ultrapotassic rocks from Italy and the Balkans, suggesting that they were produced by interaction between melts derived from phlogopite-rich clinopyroxene veins and surrounding peridotitic mantle material. The Sailipu ultrapotassic rocks can be divided into type-1 and type-2 suites based on differences in major and trace element concentrations, and isotopic compositions. Type-1 ultrapotassic rocks are relatively enriched in the heavy rare earth elements, most likely as a result of interaction between melts derived from phlogopite-rich clinopyroxene veins and the surrounding spinel-bearing peridotite material, whereas the type-2 rocks are enriched in rare earth elements and have high (Gd/Yb)N values (8.3–12.2), both of which are indicative of interaction between melts derived from phlogopite-rich clinopyroxene veins and surrounding garnet-bearing peridotite material that also contained carbonates. Although both the existing convective removal and oblique subduction models can explain some of the geological observations associated with the formation of the Tibetan Plateau, we suggest that the former more accurately explains the spatial and temporal distributions of ultrapotassic rocks and other Cenozoic lavas in this area and the associated topographic uplift recorded in southern Tibet." @default.
• W2014789152 created "2016-06-24" @default.
• W2014789152 creator A5012743553 @default.
• W2014789152 creator A5035557906 @default.
• W2014789152 creator A5042209114 @default.
• W2014789152 creator A5074842570 @default.
• W2014789152 date "2014-11-01" @default.
• W2014789152 modified "2023-10-11" @default.
• W2014789152 title "Geochemical and Sr–Nd–Pb–Os isotopic compositions of Miocene ultrapotassic rocks in southern Tibet: Petrogenesis and implications for the regional tectonic history" @default.
• W2014789152 cites W1498344923 @default.
• W2014789152 cites W1521156282 @default.
• W2014789152 cites W1597063492 @default.
• W2014789152 cites W1654280627 @default.
• W2014789152 cites W1877095307 @default.
• W2014789152 cites W1964718972 @default.
• W2014789152 cites W1967248360 @default.
• W2014789152 cites W1968646608 @default.
• W2014789152 cites W1968839333 @default.
• W2014789152 cites W1973692153 @default.
• W2014789152 cites W1979696967 @default.
• W2014789152 cites W1987112298 @default.
• W2014789152 cites W1988309237 @default.
• W2014789152 cites W2002042565 @default.
• W2014789152 cites W2002318496 @default.
• W2014789152 cites W2003584455 @default.
• W2014789152 cites W2003668476 @default.
• W2014789152 cites W2004469872 @default.
• W2014789152 cites W2004780129 @default.
• W2014789152 cites W2005769501 @default.
• W2014789152 cites W2005807431 @default.
• W2014789152 cites W2006396228 @default.
• W2014789152 cites W2011584645 @default.
• W2014789152 cites W2012367671 @default.
• W2014789152 cites W2019748000 @default.
• W2014789152 cites W2020152301 @default.
• W2014789152 cites W2021987309 @default.
• W2014789152 cites W2023273750 @default.
• W2014789152 cites W2024005564 @default.
• W2014789152 cites W2026165858 @default.
• W2014789152 cites W2026397963 @default.
• W2014789152 cites W2028477514 @default.
• W2014789152 cites W2030432301 @default.
• W2014789152 cites W2030661236 @default.
• W2014789152 cites W2032701794 @default.
• W2014789152 cites W2035415466 @default.
• W2014789152 cites W2038979071 @default.
• W2014789152 cites W2041774199 @default.
• W2014789152 cites W2041837766 @default.
• W2014789152 cites W2044550173 @default.
• W2014789152 cites W2049451277 @default.
• W2014789152 cites W2049652180 @default.
• W2014789152 cites W2049946327 @default.
• W2014789152 cites W2050682386 @default.
• W2014789152 cites W2051336362 @default.
• W2014789152 cites W2054368497 @default.
• W2014789152 cites W2054486238 @default.
• W2014789152 cites W2059199405 @default.
• W2014789152 cites W2059891335 @default.
• W2014789152 cites W2060440932 @default.
• W2014789152 cites W2063215451 @default.
• W2014789152 cites W2065581078 @default.
• W2014789152 cites W2068464003 @default.
• W2014789152 cites W2068910589 @default.
• W2014789152 cites W2074193293 @default.
• W2014789152 cites W2074324100 @default.
• W2014789152 cites W2075165389 @default.
• W2014789152 cites W2075422652 @default.
• W2014789152 cites W2078383588 @default.
• W2014789152 cites W2081865852 @default.
• W2014789152 cites W2082270291 @default.
• W2014789152 cites W2085292995 @default.
• W2014789152 cites W2085465539 @default.
• W2014789152 cites W2086227631 @default.
• W2014789152 cites W2090640707 @default.
• W2014789152 cites W2091245008 @default.
• W2014789152 cites W2093114941 @default.
• W2014789152 cites W2096276260 @default.
• W2014789152 cites W2096562031 @default.
• W2014789152 cites W2096663118 @default.
• W2014789152 cites W2097312591 @default.
• W2014789152 cites W2097503740 @default.
• W2014789152 cites W2098960611 @default.
• W2014789152 cites W2099566118 @default.
• W2014789152 cites W2101425832 @default.
• W2014789152 cites W2102276752 @default.
• W2014789152 cites W2105488103 @default.
• W2014789152 cites W2110129020 @default.
• W2014789152 cites W2115054621 @default.
• W2014789152 cites W2115518283 @default.
• W2014789152 cites W2116346512 @default.
• W2014789152 cites W2116527388 @default.
• W2014789152 cites W2120577061 @default.
• W2014789152 cites W2122966356 @default.
• W2014789152 cites W2128209044 @default.
• W2014789152 cites W2131793330 @default.
• W2014789152 cites W2135830789 @default.
• W2014789152 cites W2136388350 @default.
• W2014789152 cites W2137478736 @default.

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