Paleoproterozoic high-pressure-high-temperature pelitic granulites from Datong in the North China Craton and their geological implications: Constraints from petrology and phase equilibrium modeling

摘要

Graphical abstractDisplay OmittedHighlights?Kyanite-bearing HP granulite-facies mineral indicators are recognized in pelitic granulites from Datong.?The pelitic granulite and HP mafic granulite are spatially associated, showing concordant features of deformation and metamorphism.?The pelitic granulite documents a clockwiseP-Tloop from prograde, Pmax, Tmaxand cooling stages.?P-Tconditions of Pmaxand Tmaxare ～10.3–13.8kbar/～820–835°C, and ～6.5–9.5kbar/～850–925°C, respectively.?Zircon U-Pb ages demonstrated two age clusters of ～1950Ma and ～1850Ma.展开▼