
																
																	Paleoproterozoic UHT metamorphism in the Daqingshan Terrane, North China Craton: New constraints from phase equilibria modeling and SIMS U-Pb zircon dating
																
																
																
															Keywords: Sapphirine; Ultrahigh-temperature (UHT) metamorphism; Pseudosection; Zircon; Khondalite Belt; North China Craton;