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Anatexis occurs in response to changing P-T-fluid conditions during orogenesis, is thus crucial for understanding the tectonic evolution of orogenic belts. Here we report an integrated petrological, geochemical, whole-rock oxygen isotopic and zircon U-Pb-Hf-O isotopic study of meta-leucogranites from the Jining Complex, North China Craton, to unravel its petrogenesis and constrain the tectonic evolution...
The tectonic mechanism responsible for the formation of high-temperature (HT) and ultrahigh-temperature (UHT) granulites (>850°C) at moderate pressure (7–13kbar) is diverse and contentious, ranging from hot back-arc inversion and thickening, to lithospheric extension and underplating/intrusion of mafic magma, long-lived orogenic self-heating, and ridge subduction. The fundamental reason for this...
The Dunhuang Block, located in the eastern Tarim Craton, widely exposes Precambrian TTG gneisses and metamorphosed supracrustal rocks. A suite of metasedimentary rocks of the Dunhuang Group in the Hongliuxia area on the eastern margin of the Tarim Craton are characterized by moderate contents of quartz, plagioclase, and biotite, with minor amounts of garnet or kyanite, most of which have experienced...
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