FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2321554942> ?p ?o ?g. }

• W2321554942 endingPage "194" @default.
• W2321554942 startingPage "181" @default.
• W2321554942 abstract "Subduction of rocks into the mantle results in high-pressure metamorphism and the formation of eclogites from basaltic precursor rocks. In general, many kilometers of oceanic lithosphere are ultimately consumed prior to the subsequent continental slab subduction and collision. The exposure of the eclogites derived from oceanic subduction and continental subduction at the surface of Earth today record provide different P-T-t records of the subduction process. The Huwan shear zone in the Hong’an orogenic belt, marking a former ocean-continent transition zone, has been the focus of many studies on subduction-related high-pressure metamorphism. In this study, Lu-Hf garnet, U-Pb zircon, and Ar- Ar mica ages are combined with geochemical data to understand the origin of two coexisting eclogite bodies exposed along the Xuehe River in the Huwan Shear zone. In total, the results indicate that the two eclogites have different protoliths but experienced a similar metamorphic history. This observation requires new tectonic model for the coupled subduction of oceanic and continental crust in subduction zones. Combined geochemistry and zircon U-Pb geochronology suggest distinct oceanic and continental affinities for the eclogite protoliths. The Lu-Hf dates of 261.5 ± 2.4 Ma of the continental-type eclogite and 262.7 ± 1.7 Ma of the oceanic-type eclogite reflect garnet growth and are interpreted to closely approximate the age of eclogite-facies metamorphism. Therefore, both the geochemically oceanic- and continental-type eclogites underwent the same episode of Permian eclogite-facies metamorphism. The Permian Lu-Hf ages of ca. 262 Ma and the obtained Triassic Ar-Ar ages (~240 Ma) of the oceanic-type and continental-type eclogites imply coupled subduction and exhumation of oceanic and continental crustal materials in the Hong’an orogenic belt during the Permian and the Triassic. Though limited, the geochemical and geochronological results of this study, together with the discrepant Carboniferous dates for the nearby eclogites of previous studies, apparently suggest that the Huwan shear zone was not always a single coherent unit but instead comprises different tectonic slices that were metamorphosed at different times before final assembly. Some slices of the oceanic and continental crust underwent two subduction cycles during the Carboniferous and the Permian, whereas some eclogites registered only a single subduction-exhumation loop during the convergence between the South China Block and the North China Block in the Huwan shear zone. The consistent ages of the oceanic- and continental-type eclogites disfavor the traditional mélange model that high-pressure rocks are dismembered fragments that have been assembled and intercalated with rocks devoid of any high-pressure history at shallow crustal levels, forming a tectonic mélange." @default.
• W2321554942 created "2016-06-24" @default.
• W2321554942 creator A5070546467 @default.
• W2321554942 creator A5075087804 @default.
• W2321554942 date "2014-12-23" @default.
• W2321554942 modified "2023-09-30" @default.
• W2321554942 title "Combined geochemistry and geochronology constrains coupled subduction of oceanic and continental crust in the Huwan shear zone, central China" @default.
• W2321554942 cites W118755439 @default.
• W2321554942 cites W12402893 @default.
• W2321554942 cites W1487292156 @default.
• W2321554942 cites W1497952855 @default.
• W2321554942 cites W1522860430 @default.
• W2321554942 cites W1570814245 @default.
• W2321554942 cites W1575749970 @default.
• W2321554942 cites W1587965322 @default.
• W2321554942 cites W1595502742 @default.
• W2321554942 cites W1648805376 @default.
• W2321554942 cites W1825505754 @default.
• W2321554942 cites W1830358639 @default.
• W2321554942 cites W1837373594 @default.
• W2321554942 cites W1871734886 @default.
• W2321554942 cites W1920325883 @default.
• W2321554942 cites W1966280270 @default.
• W2321554942 cites W1967014906 @default.
• W2321554942 cites W1975652198 @default.
• W2321554942 cites W1977595825 @default.
• W2321554942 cites W1978317343 @default.
• W2321554942 cites W1978801698 @default.
• W2321554942 cites W1985048272 @default.
• W2321554942 cites W1986092846 @default.
• W2321554942 cites W1990742678 @default.
• W2321554942 cites W1992211265 @default.
• W2321554942 cites W1998786957 @default.
• W2321554942 cites W1999955815 @default.
• W2321554942 cites W2008072085 @default.
• W2321554942 cites W2018662544 @default.
• W2321554942 cites W2021345743 @default.
• W2321554942 cites W2025109266 @default.
• W2321554942 cites W2031663670 @default.
• W2321554942 cites W2033424794 @default.
• W2321554942 cites W2034582078 @default.
• W2321554942 cites W2035422468 @default.
• W2321554942 cites W2037328325 @default.
• W2321554942 cites W2037950492 @default.
• W2321554942 cites W2040047223 @default.
• W2321554942 cites W2043291535 @default.
• W2321554942 cites W2048522653 @default.
• W2321554942 cites W2048857036 @default.
• W2321554942 cites W2053381713 @default.
• W2321554942 cites W2053422899 @default.
• W2321554942 cites W2055644750 @default.
• W2321554942 cites W2062780038 @default.
• W2321554942 cites W2068138879 @default.
• W2321554942 cites W2068260939 @default.
• W2321554942 cites W2071386916 @default.
• W2321554942 cites W2072746426 @default.
• W2321554942 cites W2074041872 @default.
• W2321554942 cites W2075149957 @default.
• W2321554942 cites W2076373269 @default.
• W2321554942 cites W2079970461 @default.
• W2321554942 cites W2080325016 @default.
• W2321554942 cites W2080993999 @default.
• W2321554942 cites W2081459296 @default.
• W2321554942 cites W2083238138 @default.
• W2321554942 cites W2089832041 @default.
• W2321554942 cites W2091097158 @default.
• W2321554942 cites W2092386709 @default.
• W2321554942 cites W2100618503 @default.
• W2321554942 cites W2100653978 @default.
• W2321554942 cites W2109865402 @default.
• W2321554942 cites W2112435406 @default.
• W2321554942 cites W2116874215 @default.
• W2321554942 cites W2117003567 @default.
• W2321554942 cites W2117577007 @default.
• W2321554942 cites W2118079032 @default.
• W2321554942 cites W2133042542 @default.
• W2321554942 cites W2138196090 @default.
• W2321554942 cites W2138522501 @default.
• W2321554942 cites W2145091879 @default.
• W2321554942 cites W2146803029 @default.
• W2321554942 cites W2155100807 @default.
• W2321554942 cites W2155129854 @default.
• W2321554942 cites W2155130189 @default.
• W2321554942 cites W2155773363 @default.
• W2321554942 cites W2155838580 @default.
• W2321554942 cites W2160614281 @default.
• W2321554942 cites W2163462779 @default.
• W2321554942 cites W2323361943 @default.
• W2321554942 cites W2327212191 @default.
• W2321554942 cites W2331719079 @default.
• W2321554942 cites W2334608288 @default.
• W2321554942 cites W2355367856 @default.
• W2321554942 cites W2371908457 @default.
• W2321554942 cites W2581834115 @default.
• W2321554942 cites W2733225402 @default.
• W2321554942 cites W2797914455 @default.
• W2321554942 cites W3139812027 @default.
• W2321554942 cites W561940409 @default.

• next