Neoarchean reworking of Mesoarchean and Paleoarchean crust (3.4 ∼ 3.0 Ga) within the North China Craton: Constraints from zircon U-Pb geochronology and Lu-Hf isotopes from the basement of the Bohai Bay Basin

The Bohai Bay Basin basement is mainly composed of Archean granitoid gneisses with minor supracrustal rocks and the largest basin in Eastern Block North China Craton. Due to a cover Mesozoic Cenozoic strata, little known about age crustal evolution this basement. In study we report new zircon SHRIMP LA-ICP-MS U-Pb Lu-Hf isotope data for drill core samples, including TTGs (granodiorite, tonalite gneiss, trondhjemite gneiss), granites (monzogranite, syenogranite) leptite, aim revealing evolutionary history magmatic zircons from these granitoids reveals that were generated by two-stage events at ∼3.1 Ga ∼2.5 Ga. εHf(t) values vary +0.56 +8.27, their corresponding single-stage model ages range 3.3 3.0 −12.87 −0.07, 3.8 2.9 most 3.4 Hf isotopic characteristics show growth beneath occurred between Ga, different accretion 2.9–2.7 on periphery Basin. However, both areas reworked tectono-thermal event. Integration previous data, indicates Craton may be controlled mantle plume during period. results are significant assessing tectonic environment eastern