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• W2069883471 abstract "The time of termination of orogenesis for the southern Altaids has been controversial. Systematic investigations of field geology, geochronology and geochemistry on newly discriminated mafic–ultramafic rocks from northern Alxa in the southern Altaids were conducted to address the termination problem. The mafic–ultramafic rocks are located in the Bijiertai, Honggueryulin, and Qinggele areas, stretching from west to east for about 100 km. All rocks occur high-grade gneisses as tectonic lenses that are composed of peridotite, pyroxenite, gabbro, and serpentinite, most of which have undergone pronounced alteration, i.e., serpentinization and chloritization. Geochemically, the rocks are characterized by uniform compositional trends, i.e., with low SiO2-contents (42.51–52.21 wt.%) and alkalinity (Na2O + K2O) (0.01–5.45 wt.%, mostly less than 0.8 wt.%), and enrichments in MgO (7.37–43.36 wt.%), with Mg# = 52.75–91.87. As the rocks have been strongly altered and have a wide range of loss-on-ignition (LOI: 0.44–14.07 wt.%) values, they may have been subjected to considerable alteration by either seawater or metamorphic fluids. The REE and trace element patterns show a relatively fractionated trend with LILE enrichment and HFSE depletion, similar to that of T-MORB between N-MORB and E-MORB, indicating that the parental melt resulted from the partial melting of oceanic lithospheric mantle overprinted by fluid alteration of island-arc origin. The ultramafic rocks are relics derived from the magma after a large degree of partial melting of oceanic lithospheric mantle with superposed island arc processes under the influence of mid-ocean-ridge magmatism. LA-ICP MS U–Pb zircon ages of gabbros from three spots are 274 ± 3 Ma (MSWD = 0.35), 306 ± 3 Ma (MSWD = 0.49), 262 ± 5 Ma (MSWD = 1.2), respectively, representing the formation ages of the mafic–ultramafic rocks. Therefore, considering other previously published data, we suggest that the mafic–ultramafic rocks were products of south-dipping subduction, most probably with a slab window caused by ridge subduction, of the Paleo-Asian Ocean plate beneath the Alxa block in the Late Carboniferous to Late Permian before the Ocean completely closed. This sheds light on the controversial tectonic history of the southern Altaids and supports the concept that the termination of orogenesis was in the end-Permian to Triassic." @default.
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• W2069883471 date "2013-12-01" @default.
• W2069883471 modified "2023-09-29" @default.
• W2069883471 title "Field geology, geochronology and geochemistry of mafic–ultramafic rocks from Alxa, China: Implications for Late Permian accretionary tectonics in the southern Altaids" @default.
• W2069883471 cites W1518712899 @default.
• W2069883471 cites W1530423453 @default.
• W2069883471 cites W1556157592 @default.
• W2069883471 cites W1937144719 @default.
• W2069883471 cites W1974796447 @default.
• W2069883471 cites W1976060475 @default.
• W2069883471 cites W1978488084 @default.
• W2069883471 cites W1980800177 @default.
• W2069883471 cites W1981677666 @default.
• W2069883471 cites W1981689436 @default.
• W2069883471 cites W1984923148 @default.
• W2069883471 cites W1987197182 @default.
• W2069883471 cites W1989945922 @default.
• W2069883471 cites W1990100525 @default.
• W2069883471 cites W1990701109 @default.
• W2069883471 cites W1992903525 @default.
• W2069883471 cites W1996553891 @default.
• W2069883471 cites W1996728434 @default.
• W2069883471 cites W1999326497 @default.
• W2069883471 cites W1999448338 @default.
• W2069883471 cites W1999623014 @default.
• W2069883471 cites W2000148870 @default.
• W2069883471 cites W2001552374 @default.
• W2069883471 cites W2002380569 @default.
• W2069883471 cites W2003323528 @default.
• W2069883471 cites W2004934899 @default.
• W2069883471 cites W2005400639 @default.
• W2069883471 cites W2008633415 @default.
• W2069883471 cites W2009251618 @default.
• W2069883471 cites W2009637151 @default.
• W2069883471 cites W2014935809 @default.
• W2069883471 cites W2015115766 @default.
• W2069883471 cites W2016690501 @default.
• W2069883471 cites W2019259962 @default.
• W2069883471 cites W2019621021 @default.
• W2069883471 cites W2019695435 @default.
• W2069883471 cites W2020973699 @default.
• W2069883471 cites W2022859730 @default.
• W2069883471 cites W2023621032 @default.
• W2069883471 cites W2037498963 @default.
• W2069883471 cites W2042266298 @default.
• W2069883471 cites W2043003723 @default.
• W2069883471 cites W2043021600 @default.
• W2069883471 cites W2046954615 @default.
• W2069883471 cites W2054782085 @default.
• W2069883471 cites W2057971422 @default.
• W2069883471 cites W2061359484 @default.
• W2069883471 cites W2063734888 @default.
• W2069883471 cites W2064834605 @default.
• W2069883471 cites W2065473183 @default.
• W2069883471 cites W2068328265 @default.
• W2069883471 cites W2075655861 @default.
• W2069883471 cites W2078816109 @default.
• W2069883471 cites W2080674984 @default.
• W2069883471 cites W2084163522 @default.
• W2069883471 cites W2085431448 @default.
• W2069883471 cites W2086222978 @default.
• W2069883471 cites W2088377459 @default.
• W2069883471 cites W2089096123 @default.
• W2069883471 cites W2089426009 @default.
• W2069883471 cites W2089668366 @default.
• W2069883471 cites W2093642217 @default.
• W2069883471 cites W2094117407 @default.
• W2069883471 cites W2112435406 @default.
• W2069883471 cites W2119695127 @default.
• W2069883471 cites W2120451076 @default.
• W2069883471 cites W2121699310 @default.
• W2069883471 cites W2124389830 @default.
• W2069883471 cites W2126127241 @default.
• W2069883471 cites W2130869872 @default.
• W2069883471 cites W2138522501 @default.
• W2069883471 cites W2139590166 @default.
• W2069883471 cites W2143470322 @default.
• W2069883471 cites W2145532484 @default.
• W2069883471 cites W2153500334 @default.
• W2069883471 cites W2154954711 @default.
• W2069883471 cites W2387543009 @default.
• W2069883471 cites W2394687692 @default.
• W2069883471 doi "https://doi.org/10.1016/j.jseaes.2013.01.020" @default.
• W2069883471 hasPublicationYear "2013" @default.
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