%0 Journal Article %T Where is the North China–South China block boundary in eastern China? %+ Institut des Sciences de la Terre d'Orléans (ISTO) %A Faure, Michel %A Lin, Wei %A Le Breton, Nicole %< avec comité de lecture %@ 0091-7613 %J Geology %I Geological Society of America %V 29 %P 119-122 %8 2001 %D 2001 %R 10.1130/0091-7613(2001)029<0119:WITNCS>2.0.CO;2 %K suture zone %K exhumation %K granulite facies %K detachment fault %K China %Z Sciences of the Universe [physics]/Earth Sciences/TectonicsJournal articles %X The Qinling-Dabieshan belt results from the collision of the North China and South China blocks. The eastern extension of the belt (the Sulu area) consists of several stacked units: from top to bottom, these are (1) a weakly metamorphosed slate-sandstone unit of Neoproterozoic-Paleozoic age, (2) a gneiss-quartzite unit metamorphosed under high-pressure (P) conditions, (3) a marble-amphibolite unit, (4) an ultrahigh-P unit that was very deeply subducted and then exhumed, and (5) a migmatitic dome resulting from the melting of ultrahigh-P rocks. All these units underwent the same deformation, which was characterized by a top-to-the-northwest extensional ductile shearing, during their exhumation. Granulite facies restites in the migmatite are not significantly different from granulitized eclogites derived from the ultrahigh-P rocks. The migmatite exhibits the same structural and petrologic evolution as that determined for the other units. The resemblance of petrologic and structural features and the lack of ocean-basin rock shows that the boundary between the North China block and South China block must be placed north of the Sulu area. %G English %2 https://insu.hal.science/hal-00078015/document %2 https://insu.hal.science/hal-00078015/file/Faure-Geology-2001.pdf %L hal-00078015 %U https://insu.hal.science/hal-00078015 %~ INSU %~ CNRS %~ UNIV-ORLEANS %~ ISTO %~ OSUC