Discovery and geological significance of high-pressure mafic granulites in the Pingdu–Anqiu area of the Jiaobei Terrane, the Jiao–Liao–Ji Belt, the North China Craton

摘要

Graphical abstractDisplay OmittedHighlights?HP mafic granulite discovered from the Pingdu–Anqiu area, the Jiaobei terrane.?U–Pb age data reveal 1950–1900Ma peak and 1900–1800Ma retrogressive metamorphism.?HP mafic granulite defined a clockwiseP–T–tpath involving near-isothermal decompression and near-isobaric cooling.AbstractHigh-pressure (HP) mafic granulites in the Pingdu–Anqiu area of the Jiaobei Terrane, in the southwestern segment of the Jiao–Liao–Ji Belt of the North China Craton, occur as irregular lenses or deformed dike swarms within the Paleoproterozoic graphite-bearing paragneisses and marbles. Petrographic examination h