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- W1985051039 abstract "Abstract Mafic dyke swarms constitute a common occurrence within the cratonic provinces in the world since the Archean–Proterozoic boundary and their geneses harbor critical information for facilitating regional tectonic and supercontinental reconstruction. This zircon U–Pb dating and geochemical study documents two episodes of Paleoproterozoic mafic intrusions from Liaoning province, North China Craton (NCC): the Haicheng suite (HCS) with an emplacement age of ca. 2125 Ma from the Liaodong Peninsula and the Guohua suite (GHS) with an age of ca. 1816 Ma from the western Liaoning terrane. The HCS meta-gabbros are tholeiitic in composition with an SiO 2 range from 46 to 52%, modest enrichment in light rare earth elements (LREE) and depletion in high field strength elements (HFSE), and possess radiogenic whole-rock Nd ( ɛ Nd ( t ) = +1.91 to +4.21) and zircon Hf ( ɛ Hf ( t ) = +4.02 to +8.48) isotopic compositions. These features endow the HCS with a juvenile subduction fluid-metasomatized lithospheric mantle source. By contrast, the GHS exhibits a meta-gabbroic to -dioritic composition and a transitional character from tholeiitic to calc-alkali, with variably enriched LREEs and more evolved isotopic signatures ( ɛ Nd ( t ) = −0.20 to −5.82, zircon ɛ Hf ( t ) = +0.09 to +4.91) than the HCS. While the relatively intact high-Fe gabbroic samples are supposed to represent partial melts from a fertile cratonic sub-continental lithospheric mantle source in the garnet ± spinel stability field, the low-Fe dioritic ones tend to bear the imprints of subsequent assimilation and fractional crystallization process. Apart from making an important contribution to the present archive of the Paleoproterozoic mafic dyke swarms in the NCC, the present two mafic magmatic suites witnessed a shift in tectonic setting from a subduction-related continental arc environment to a post-orogenic extensional regime. Synthesizing two suites with coeval felsic igneous episodes as well as concomitant episodic metamorphic events in the Jiao-Liao-Ji belt leads to the characterization of a possible divergent double subduction system in the eastern NCC during the time span of ca. 2.2–1.80 Ga. Synchronized beating of episodic magmatic and metamorphic pulses in the constituent mobile belts of the NCC carries further implication of attesting to the ubiquity and importance of divergent double subduction system in the cratonic amalgamation and its incorporation within the supercontinent Columbia." @default.
- W1985051039 created "2016-06-24" @default.
- W1985051039 creator A5007035486 @default.
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- W1985051039 creator A5055299145 @default.
- W1985051039 creator A5057241386 @default.
- W1985051039 creator A5061407928 @default.
- W1985051039 date "2015-07-01" @default.
- W1985051039 modified "2023-10-03" @default.
- W1985051039 title "Two episodes of Paleoproterozoic mafic intrusions from Liaoning province, North China Craton: Petrogenesis and tectonic implications" @default.
- W1985051039 cites W1550913970 @default.
- W1985051039 cites W155293418 @default.
- W1985051039 cites W1965625536 @default.
- W1985051039 cites W1966852237 @default.
- W1985051039 cites W1967525372 @default.
- W1985051039 cites W1968685730 @default.
- W1985051039 cites W1971275780 @default.
- W1985051039 cites W1972295324 @default.
- W1985051039 cites W1974438203 @default.
- W1985051039 cites W1975676133 @default.
- W1985051039 cites W1977431633 @default.
- W1985051039 cites W1978257403 @default.
- W1985051039 cites W1979391575 @default.
- W1985051039 cites W1980636746 @default.
- W1985051039 cites W1983593578 @default.
- W1985051039 cites W1985296651 @default.
- W1985051039 cites W1987501517 @default.
- W1985051039 cites W1988590004 @default.
- W1985051039 cites W1989494251 @default.
- W1985051039 cites W1989945922 @default.
- W1985051039 cites W1990509707 @default.
- W1985051039 cites W1990593047 @default.
- W1985051039 cites W1991218568 @default.
- W1985051039 cites W1991259689 @default.
- W1985051039 cites W1992117512 @default.
- W1985051039 cites W1992322901 @default.
- W1985051039 cites W1993133693 @default.
- W1985051039 cites W1995387314 @default.
- W1985051039 cites W2000281927 @default.
- W1985051039 cites W2000340019 @default.
- W1985051039 cites W2003323528 @default.
- W1985051039 cites W2004934899 @default.
- W1985051039 cites W2008507451 @default.
- W1985051039 cites W2008961654 @default.
- W1985051039 cites W2011573377 @default.
- W1985051039 cites W2012026799 @default.
- W1985051039 cites W2012234363 @default.
- W1985051039 cites W2013031046 @default.
- W1985051039 cites W2013222860 @default.
- W1985051039 cites W2018318075 @default.
- W1985051039 cites W2019758284 @default.
- W1985051039 cites W2021508582 @default.
- W1985051039 cites W2021812400 @default.
- W1985051039 cites W2021987309 @default.
- W1985051039 cites W2026145235 @default.
- W1985051039 cites W2027862110 @default.
- W1985051039 cites W2029991586 @default.
- W1985051039 cites W2033354344 @default.
- W1985051039 cites W2034961939 @default.
- W1985051039 cites W2035185400 @default.
- W1985051039 cites W2036261610 @default.
- W1985051039 cites W2036409975 @default.
- W1985051039 cites W2039072788 @default.
- W1985051039 cites W2041565088 @default.
- W1985051039 cites W2043003723 @default.
- W1985051039 cites W2044620880 @default.
- W1985051039 cites W2044705447 @default.
- W1985051039 cites W2046816469 @default.
- W1985051039 cites W2047325747 @default.
- W1985051039 cites W2048722334 @default.
- W1985051039 cites W2049120158 @default.
- W1985051039 cites W2049155381 @default.
- W1985051039 cites W2050596379 @default.
- W1985051039 cites W2052964693 @default.
- W1985051039 cites W2054590577 @default.
- W1985051039 cites W2055721201 @default.
- W1985051039 cites W2058069082 @default.
- W1985051039 cites W2060244969 @default.
- W1985051039 cites W2061359484 @default.
- W1985051039 cites W2062637542 @default.
- W1985051039 cites W2063645155 @default.
- W1985051039 cites W2063648931 @default.
- W1985051039 cites W2064078798 @default.
- W1985051039 cites W2065463075 @default.
- W1985051039 cites W2066659251 @default.
- W1985051039 cites W2066809036 @default.
- W1985051039 cites W2069124235 @default.
- W1985051039 cites W2072681703 @default.
- W1985051039 cites W2072833969 @default.
- W1985051039 cites W2074059882 @default.
- W1985051039 cites W2074366936 @default.
- W1985051039 cites W2075896647 @default.
- W1985051039 cites W2075964210 @default.
- W1985051039 cites W2076373269 @default.
- W1985051039 cites W2077474983 @default.
- W1985051039 cites W2078840355 @default.
- W1985051039 cites W2078926165 @default.