FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2937108102> ?p ?o ?g. }

• W2937108102 endingPage "1743" @default.
• W2937108102 startingPage "1723" @default.
• W2937108102 abstract "Abstract The Qilian block, one of the Precambrian terranes in the Qinling-Qilian-Kunlun orogenic system, is a critical region for reconstruction of the overall architecture and tectonic evolution of NW China. This investigation of zircon U-Pb and Lu-Hf isotopes and whole-rock geochemistry of a metasupracrustal sequence in the North Wulan terrane provides new insights into the Qilian block. A Statherian–Calymmian unit (ca. 1.67–1.5 Ga), dominated by Al- and Si-rich gneisses, arkosites, quartzites, and amphibolites with minor calc-silicate rocks and marbles, is interpreted to have been deposited during continental rifting. Detrital zircons show two main age populations of 2685–2276 and 2098–1761 Ma with mostly negative εHf(t) values (–14.0 to +3.6). The sources are characterized by mixed felsic to intermediate igneous rocks as well as recycled components and are interpreted as being derived from the Tarim craton because of the age distribution of their detrital zircons. A Stenian–Tonian unit (ca. 1.1–0.9 Ga) consists mainly of felsic gneisses, quartzites, calc-silicate rocks, marbles, metavolcanic rocks, and amphibolites. The metasedimentary rocks yielded detrital zircon ages clustering at ca. 1.64, 1.43, 1.3–1.2, 1.1, and 0.94 Ga with predominantly positive εHf(t) values (–7.1 to +9.7). One metavolcanic rock has an age of ca. 1110 Ma and εHf(t) values of +6.5 to +9.1. The provenance is dominated by local syndepositional arc-related igneous rocks with older detritus possibly from Laurentia, again based on the age distribution of the detrital zircons. The Central Qilian and Hualong terranes show strong affinities with the North Wulan terrane and together constituted a single coherent Qilian block prior to their involvement in the Qilian–North Qaidam orogen. The Qilian block was probably once part of the Tarim craton and had a strong linkage to South Tarim, which drifted from North Tarim during the breakup of Columbia in the early Mesoproterozoic. We suggest that, from the late Mesoproterozoic to early Neoproterozoic, the South Tarim–Qilian formed an active continental margin located close to Laurentia during the assembly of Rodinia. The final collision occurred in the early Neoproterozoic with the formation of a significant continent that included the reunified Tarim-Qilian as well as Qaidam-Kunlun and Qinling terranes, Alxa block, Kyrgyz-Chinese Tianshan, and Yili block." @default.
• W2937108102 created "2019-04-25" @default.
• W2937108102 creator A5003868503 @default.
• W2937108102 creator A5029484872 @default.
• W2937108102 creator A5046468748 @default.
• W2937108102 date "2019-04-15" @default.
• W2937108102 modified "2023-09-26" @default.
• W2937108102 title "New insights into the Precambrian tectonic evolution and continental affinity of the Qilian block: Evidence from geochronology and geochemistry of metasupracrustal rocks in the North Wulan terrane" @default.
• W2937108102 cites W1012135854 @default.
• W2937108102 cites W1170083055 @default.
• W2937108102 cites W1475468184 @default.
• W2937108102 cites W1963556559 @default.
• W2937108102 cites W1965701586 @default.
• W2937108102 cites W1966129736 @default.
• W2937108102 cites W1967525372 @default.
• W2937108102 cites W1974236193 @default.
• W2937108102 cites W1975042776 @default.
• W2937108102 cites W1975837076 @default.
• W2937108102 cites W1977631396 @default.
• W2937108102 cites W1978362794 @default.
• W2937108102 cites W1981749971 @default.
• W2937108102 cites W1982093108 @default.
• W2937108102 cites W1982198959 @default.
• W2937108102 cites W1983200963 @default.
• W2937108102 cites W1983593578 @default.
• W2937108102 cites W1985647492 @default.
• W2937108102 cites W1985661185 @default.
• W2937108102 cites W1985699465 @default.
• W2937108102 cites W1986290910 @default.
• W2937108102 cites W1987469068 @default.
• W2937108102 cites W1988167699 @default.
• W2937108102 cites W1988961923 @default.
• W2937108102 cites W1991218568 @default.
• W2937108102 cites W1992322901 @default.
• W2937108102 cites W1995938903 @default.
• W2937108102 cites W1996553891 @default.
• W2937108102 cites W1998028544 @default.
• W2937108102 cites W1998225071 @default.
• W2937108102 cites W2000945203 @default.
• W2937108102 cites W2003687715 @default.
• W2937108102 cites W2007004781 @default.
• W2937108102 cites W2008507451 @default.
• W2937108102 cites W2008961654 @default.
• W2937108102 cites W2010897022 @default.
• W2937108102 cites W2012787043 @default.
• W2937108102 cites W2014580760 @default.
• W2937108102 cites W2015115766 @default.
• W2937108102 cites W2015876559 @default.
• W2937108102 cites W2017300140 @default.
• W2937108102 cites W2019143131 @default.
• W2937108102 cites W2020973699 @default.
• W2937108102 cites W2022859730 @default.
• W2937108102 cites W2023745225 @default.
• W2937108102 cites W2024292236 @default.
• W2937108102 cites W2024449999 @default.
• W2937108102 cites W2026864488 @default.
• W2937108102 cites W2028802548 @default.
• W2937108102 cites W2031301607 @default.
• W2937108102 cites W2031317963 @default.
• W2937108102 cites W2031902554 @default.
• W2937108102 cites W2035413487 @default.
• W2937108102 cites W2035436047 @default.
• W2937108102 cites W2036174339 @default.
• W2937108102 cites W2037941752 @default.
• W2937108102 cites W2038347316 @default.
• W2937108102 cites W2039872199 @default.
• W2937108102 cites W2040200942 @default.
• W2937108102 cites W2044655244 @default.
• W2937108102 cites W2044911516 @default.
• W2937108102 cites W2050582708 @default.
• W2937108102 cites W2050716036 @default.
• W2937108102 cites W2051626006 @default.
• W2937108102 cites W2051766674 @default.
• W2937108102 cites W2052639207 @default.
• W2937108102 cites W2053800438 @default.
• W2937108102 cites W2054128597 @default.
• W2937108102 cites W2055721201 @default.
• W2937108102 cites W2056335536 @default.
• W2937108102 cites W2058086224 @default.
• W2937108102 cites W2059803873 @default.
• W2937108102 cites W2065085765 @default.
• W2937108102 cites W2066892993 @default.
• W2937108102 cites W2066968027 @default.
• W2937108102 cites W2067988163 @default.
• W2937108102 cites W2068704074 @default.
• W2937108102 cites W2068967748 @default.
• W2937108102 cites W2069815139 @default.
• W2937108102 cites W2070718822 @default.
• W2937108102 cites W2071110295 @default.
• W2937108102 cites W2073369201 @default.
• W2937108102 cites W2074238950 @default.
• W2937108102 cites W2075328050 @default.
• W2937108102 cites W2075651942 @default.
• W2937108102 cites W2080325016 @default.
• W2937108102 cites W2082627012 @default.
• W2937108102 cites W2083091028 @default.
• W2937108102 cites W2084045184 @default.
• W2937108102 cites W2084222906 @default.

• next