The Dabie-Sulu UHP rocks belt: review and prospect

摘要: The new results in the studies of Dabie-Sulu UHP rocks belt during past 5 years were summarized and discussed. discussion included following key points: ( i ) eclogite has two kinds country rocks, with one being facies other non-UHP granitic gneiss. ii FeTiO3 olivine indicated exsolution at depth 300–400 km. However, point is to prove peridotite which FeTlO3 was found once had been subducted down that depth. iii hydrous phase evidenced fluids taken part metamorphism, while meter-scale inhomogeneous distribution O-, C-isotope no fluid activity deep subduction environment. IV No agreement arrived on many problems related tectonic background such as “whether or not ophiolitic there exist now?”, “when did metamorphism proceed?”, “what subdution polarity?”, etc. V How exhume from mantle depth? future will focus three subjects: thermal dynamics relationship between collision orogeny, well their geodynamics, interactions crust mantle, continental lithosphere asthenosphere orogenic process, constraints evolution lithosphere.