Coherence of the Dabie Shan UHPM terrane investigated by Lu-Hf and 40Ar/39Ar dating of eclogites
作者： Fraukje M. Brouwer , Mirek Groen , Oliver Nebel , Jan R. Wijbrans , Huaning Qiu
DOI: 10.1016/B978-0-12-385144-4.00010-2
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摘要: Publisher Summary The Central China Orogenic Belt (CCOB) is the largest known ultrahigh-pressure metamorphic (UHPM) belt. It extends from Sulu in Eastern China, via Dabie, Qinling, and North Qaidam mountains to Altyn Tagh some 3000 km west. Since discovery of coesite diamond-bearing rocks Dabie Shan, belt has been studied intensively. Some results have led controversy regarding number (U)HP events their absolute relative ages. prominence Shan as part UHPM reflected by a wealth published work since over 20 years ago. Despite two decades efforts decipher its geologic secrets, interpretation many reported isotopic ages terrane that aimed address history still hampered absence robust thermobarometric data for same samples. Pre-Triassic metamorphism cannot be traced Lu–Hf Grt–Cpx geochronology main volume which was subjected Triassic metamorphism. event erased previous signatures some, but not all systems, evident zircon U-Pb
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