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A petrological study is carried out for a high-pressure (HP) omphacite–epidote vein and its host ultrahigh-pressure (UHP) eclogites at Ganghe in the Dabie orogen. The UHP eclogite shows systematic changes toward the HP vein in mineral assemblage, mineral proportion and bulk-rock composition. The eclogite far away from the vein (>20cm) contains abundant lawsonite pseudomorphs indicated by the aggregates...
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...
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...
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