Mesozoic magmatic evolution of the Laiyuan complex: Tracing the crust-mantle and lithosphere-asthenosphere interactions in the central North China Craton

The Laiyuan complex in the central North China Craton (NCC) incorporating different magmatic suites offers an excellent opportunity to investigate lithospheric evolution and cratonic destruction. However, petrogenesis tectonic implications of this suite remain debated due lack integrated studies. Here we evaluate magmatism setting assembling data from multidisciplinary investigations complex. is composed volcanic suites, granitoids, ultramafic-mafic intrusions, dykes showing common features enrichments LREEs LILEs depletions HFSEs. Detailed petrogenetic considerations suggest that crust-mantle lithosphere-asthenosphere interactions contributed formation various suites. involvement thickened lower crust enriched mantle source, diverse processes including partial melting, fractional crystallization, magma mixing have played a significant role Furthermore, interaction induced by thinning lithosphere upwelling asthenosphere controlled source variations dolerites lamprophyres. formed extensional triggered subduction Paleo-Pacific Plate. subduction, rollback, stagnation slab modification architecture Craton. A slow gradual thermal-mechanical erosion occurred at whereas rapid intense delamination eastern contributing evolution. Both mechanisms combined with destruction An model proposed describe During Jurassic, Plate reached beneath At 145–140 Ma, fast rollback lead hot inducing accounting for granitoids MMEs (137–126 Ma), rocks (131–127 felsic Ma). Through time, became substantially thin asthenospheric input increasing form dolerite 125–117 Ma lamprophyre 115–111 Ma.