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- W2000821587 abstract "Gneissic rocks in the Chinese Altai Mountains have been interpreted as either Paleozoic metasedimentary rocks or Precambrian basement. This study reports geochemical and geochronological data for banded paragneisses and associated gneissic granitoids collected along a NE–SW traverse in the northwestern Chinese Altai. Petrological and geochemical data suggest that the protoliths of the banded gneisses were possibly immature sediments with significant volcanic input and that the gneissic granitoids were derived from I-type granites formed in a subduction environment. Three types of morphological features can be recognized in zircons from the banded gneisses and are interpreted to correlate with different sources. Zircons from five samples of banded paragneiss cluster predominantly between 466 and 528 Ma, some give Neoproterozoic ages, and a few yield discordant Paleoproterozoic to Archean ages. Zircon Hf isotopic compositions indicate that both juvenile/mantle and crust materials were involved in the generation of the source rocks from which these zircons were derived. In contrast, zircons occur ubiquitously as elongated euhedral prismatic crystals in the four samples of the gneissic granitoids, and define single populations for each sample with mean ages between 380 and 453 Ma. The general absence of Precambrian inheritance and positive zircon ɛHf values for these granitoids suggest insignificant crustal contribution to the generation of the precursor magmas. Our data can be interpreted in terms of a progressive accretionary history in early to middle Palaeozoic times, and the Chinese Altai may possibly represent a magmatic arc built on a continental margin dominated by Neoproterozoic rocks." @default.
- W2000821587 created "2016-06-24" @default.
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- W2000821587 date "2008-01-01" @default.
- W2000821587 modified "2023-10-17" @default.
- W2000821587 title "Zircon U–Pb and Hf isotopic study of gneissic rocks from the Chinese Altai: Progressive accretionary history in the early to middle Palaeozoic" @default.
- W2000821587 cites W1530423453 @default.
- W2000821587 cites W1534101527 @default.
- W2000821587 cites W1603990953 @default.
- W2000821587 cites W1925397053 @default.
- W2000821587 cites W1965701586 @default.
- W2000821587 cites W1966358361 @default.
- W2000821587 cites W1982687831 @default.
- W2000821587 cites W1983058322 @default.
- W2000821587 cites W1984191236 @default.
- W2000821587 cites W1989090951 @default.
- W2000821587 cites W1999708461 @default.
- W2000821587 cites W2000713509 @default.
- W2000821587 cites W2003323528 @default.
- W2000821587 cites W2004337397 @default.
- W2000821587 cites W2004761682 @default.
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- W2000821587 cites W2006510222 @default.
- W2000821587 cites W2006513003 @default.
- W2000821587 cites W2009127786 @default.
- W2000821587 cites W2016223358 @default.
- W2000821587 cites W2025069593 @default.
- W2000821587 cites W2027857855 @default.
- W2000821587 cites W2029401070 @default.
- W2000821587 cites W2033708340 @default.
- W2000821587 cites W2034223887 @default.
- W2000821587 cites W2036116264 @default.
- W2000821587 cites W2041328493 @default.
- W2000821587 cites W2047807381 @default.
- W2000821587 cites W2050716036 @default.
- W2000821587 cites W2051273227 @default.
- W2000821587 cites W2054590577 @default.
- W2000821587 cites W2057074717 @default.
- W2000821587 cites W2058924927 @default.
- W2000821587 cites W2060244969 @default.
- W2000821587 cites W2060461428 @default.
- W2000821587 cites W2062573951 @default.
- W2000821587 cites W2063734888 @default.
- W2000821587 cites W2066124586 @default.
- W2000821587 cites W2071103381 @default.
- W2000821587 cites W2071768341 @default.
- W2000821587 cites W2076098677 @default.
- W2000821587 cites W2079307601 @default.
- W2000821587 cites W2080187059 @default.
- W2000821587 cites W2080325016 @default.
- W2000821587 cites W2083616868 @default.
- W2000821587 cites W2085431448 @default.
- W2000821587 cites W2087510774 @default.
- W2000821587 cites W2087775540 @default.
- W2000821587 cites W2088105278 @default.
- W2000821587 cites W2089096123 @default.
- W2000821587 cites W2090031438 @default.
- W2000821587 cites W2090206242 @default.
- W2000821587 cites W2094194060 @default.
- W2000821587 cites W2096021121 @default.
- W2000821587 cites W2103463307 @default.
- W2000821587 cites W2108971421 @default.
- W2000821587 cites W2112109341 @default.
- W2000821587 cites W2120941750 @default.
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- W2000821587 cites W2144346174 @default.
- W2000821587 cites W2581834115 @default.
- W2000821587 cites W2897983685 @default.
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- W2000821587 doi "https://doi.org/10.1016/j.chemgeo.2007.10.026" @default.
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