Matches in SemOpenAlex for { <https://semopenalex.org/work/W2964180892> ?p ?o ?g. }
- W2964180892 endingPage "105395" @default.
- W2964180892 startingPage "105395" @default.
- W2964180892 abstract "Precambrian igneous and metamorphic rocks of the Phan Si Pan Complex, North Vietnam, constitute the southern extension of the Yangtze Block, and provide a valuable record of the early evolution of the continental crust. We present results of U-Pb zircon geochronology and geochemistry for Precambrian granites in this complex to constrain their emplacement age and genesis. Granites from three plutonic bodies yielded ages of 2848 ± 15 Ma, 2768 ± 19 Ma and 1869 ± 30 Ma, which represent newly-recognized late Archean to Paleoproterozoic potassic granite plutonism in the southern Yangtze Block. The average εHf(t) values range from −6.2 to 0.1 for the 2.85 to 2.77 Ga granitic rocks and −13.1 to −9.2 for the ca. 1.86 Ga granitic rocks, with two-stage model ages of 3.64 to 3.20 Ga and 3.31 to 3.07 Ga, respectively, suggesting derivation from partial melting of Paleoarchean and Mesoarchean crust. The late Archean potassic granites exhibit high K2O, and high Sr/Y and (La/Yb)N ratios with negligible Eu anomalies, indicating derivation from melting of the thickened lower crust, which is inferred to have occurred in an active margin setting. The late Paleoproterozoic alkali feldspar granites are characterized by high FeOT/(FeOT + MgO)(0.96–0.99) and 10000 * Ga/Al (2.75–2.94) ratios, showing an affinity of A-type granite. These A-type granites exhibit flat chondrite-normalized HREE patterns and strong negative Eu anomalies, and low Sr/Y and (La/Yb)N ratios, corresponding to melting at a shallow depth, probably in a post-collisional extension setting. Comparison of the rock units and events recorded by the Phan Si Pan Complex with other Archean to Paleoproterozoic complexes (Houhe, Dongchuan, Yudongzi, Douling, Zhongxiang and Kongling complexes) in the Yangtze Block indicate spatially distinct histories of crustal growth, and thus may reflect independent terranes. The ca. 1.86 Ga post-collisional magmatism, which succeeds a 2.0–1.9 Ga metamorphic event, is distributed throughout the Yangtze Block, including the Phan Si Pan Complex, suggesting assembly of the disparate terranes and final cratonization of the Yangtze Block overlaps with, and may be related to, assembly of the Nuna supercontinent." @default.
- W2964180892 created "2019-07-30" @default.
- W2964180892 creator A5006685240 @default.
- W2964180892 creator A5043809031 @default.
- W2964180892 creator A5046992969 @default.
- W2964180892 creator A5060091257 @default.
- W2964180892 creator A5073785361 @default.
- W2964180892 creator A5078302352 @default.
- W2964180892 creator A5086048857 @default.
- W2964180892 date "2019-09-01" @default.
- W2964180892 modified "2023-10-17" @default.
- W2964180892 title "Neoarchean and Paleoproterozoic K-rich granites in the Phan Si Pan Complex, north Vietnam: Constraints on the early crustal evolution of the Yangtze Block" @default.
- W2964180892 cites W1475468184 @default.
- W2964180892 cites W1698391860 @default.
- W2964180892 cites W1964957427 @default.
- W2964180892 cites W1968685730 @default.
- W2964180892 cites W1969968003 @default.
- W2964180892 cites W1970158803 @default.
- W2964180892 cites W1972607637 @default.
- W2964180892 cites W1974231173 @default.
- W2964180892 cites W1974499954 @default.
- W2964180892 cites W1975857015 @default.
- W2964180892 cites W1977650828 @default.
- W2964180892 cites W1978362794 @default.
- W2964180892 cites W1979331736 @default.
- W2964180892 cites W1980644983 @default.
- W2964180892 cites W1982272146 @default.
- W2964180892 cites W1988497895 @default.
- W2964180892 cites W1991381283 @default.
- W2964180892 cites W1993449388 @default.
- W2964180892 cites W2011321024 @default.
- W2964180892 cites W2014580760 @default.
- W2964180892 cites W2019034794 @default.
- W2964180892 cites W2019143131 @default.
- W2964180892 cites W2022017333 @default.
- W2964180892 cites W2029184354 @default.
- W2964180892 cites W2033683037 @default.
- W2964180892 cites W2035670944 @default.
- W2964180892 cites W2037028362 @default.
- W2964180892 cites W2037042724 @default.
- W2964180892 cites W2039037890 @default.
- W2964180892 cites W2040229283 @default.
- W2964180892 cites W2045889087 @default.
- W2964180892 cites W2046441274 @default.
- W2964180892 cites W2046961523 @default.
- W2964180892 cites W2049219493 @default.
- W2964180892 cites W2053396208 @default.
- W2964180892 cites W2053581858 @default.
- W2964180892 cites W2053721096 @default.
- W2964180892 cites W2054624167 @default.
- W2964180892 cites W2055172418 @default.
- W2964180892 cites W2062198864 @default.
- W2964180892 cites W2069031876 @default.
- W2964180892 cites W2069124235 @default.
- W2964180892 cites W2070718822 @default.
- W2964180892 cites W2072620570 @default.
- W2964180892 cites W2074323586 @default.
- W2964180892 cites W2075651942 @default.
- W2964180892 cites W2075964210 @default.
- W2964180892 cites W2080325016 @default.
- W2964180892 cites W2081309949 @default.
- W2964180892 cites W2084773848 @default.
- W2964180892 cites W2089537292 @default.
- W2964180892 cites W2092241581 @default.
- W2964180892 cites W2094913826 @default.
- W2964180892 cites W2105636247 @default.
- W2964180892 cites W2106963293 @default.
- W2964180892 cites W2108971421 @default.
- W2964180892 cites W2127994322 @default.
- W2964180892 cites W2133042542 @default.
- W2964180892 cites W2136857107 @default.
- W2964180892 cites W2138522501 @default.
- W2964180892 cites W2144081161 @default.
- W2964180892 cites W2157202268 @default.
- W2964180892 cites W2162763302 @default.
- W2964180892 cites W2163100615 @default.
- W2964180892 cites W2164468447 @default.
- W2964180892 cites W2164636100 @default.
- W2964180892 cites W2165712457 @default.
- W2964180892 cites W2167856052 @default.
- W2964180892 cites W2195516043 @default.
- W2964180892 cites W2214453227 @default.
- W2964180892 cites W2252537563 @default.
- W2964180892 cites W2296214900 @default.
- W2964180892 cites W2321022920 @default.
- W2964180892 cites W2345627040 @default.
- W2964180892 cites W2519920925 @default.
- W2964180892 cites W2530142661 @default.
- W2964180892 cites W2553075062 @default.
- W2964180892 cites W2561129996 @default.
- W2964180892 cites W2586724122 @default.
- W2964180892 cites W2589792699 @default.
- W2964180892 cites W2592142660 @default.
- W2964180892 cites W2606982237 @default.
- W2964180892 cites W2619518091 @default.
- W2964180892 cites W2733371642 @default.
- W2964180892 cites W2742155385 @default.
- W2964180892 cites W2750989671 @default.