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Continental subduction and its interaction with overlying mantle wedge are recognized as fundamental solid earth processes, yet the dynamics of this system remains ambiguous. In order to get an insight into crust–mantle interaction triggered by partial melting of subudcted continental crust during its exhumation, we carried out a combined study of the Shidao alkaline complex from the Sulu ultrahigh...
Early Cretaceous intermediate-mafic dykes in the Dabie orogen, eastern China, provide an opportunity to examine the process of crust–mantle interaction caused by foundering of eclogitized lower continental crust (LCC) into underlying mantle. Chronological, geochemical and Sr–Nd–Hf isotopic analyses were carried out on the intermediate-mafic dykes. SHRIMP zircon U–Pb dating yields emplacement ages...
Early Cretaceous granodioritic host rocks with mafic microgranular enclaves (MME) in the Dabie orogen provide important insights into magma mixing between melts from delaminated eclogitic lower continental crust and mantle-derived magma. The Meichuan host granodiorites (132±1Ma) from the eastern margin of the Dabie orogen, adjacent to the Tan–Lu fault, are high-Mg adakitic rocks containing 63.5–69...
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