Sedimentological and zircon U–Pb–Hf isotopic analyses of the Carboniferous strata in the Bainaimiao arc belt (BAB) provide provenance information for the northern margin of the North China Craton (NCC). The late Carboniferous strata in the eastern BAB were dominantly shallow marine carbonate-clastic deposits. Detrital zircon data show that: (1) sandstone from lower Sidaozhangpeng Formation displays two major age peaks of 369 Ma and 2522 Ma, with ε_Hf (t) values of − 25.9 to − 20.4 and 2.2–6.4, respectively; (2) sandstone from upper Sidaozhangpeng Formation shows a significant age peak at 384 Ma, with ε_Hf (t) values of − 25.3 to − 14.5. Determination of detrital zircon parent rock types based on trace element proxies suggests that the protolith rock types consist of felsic (73%) and mafic rocks (22%), with minor alkaline rocks (5%), implying a continental arc setting. The U–Pb–Hf dating of the Carboniferous strata in the western and eastern BAB shows different provenances: the Carboniferous sediments in the western BAB were derived from early Paleozoic magmatic rocks, micro-block (Hunshandake Block) and the NCC basement; the provenances of the Carboniferous strata from the eastern BAB were mainly local Devonian magmatic rocks, with subordinate input of the Neoarchean NCC basement rocks. The early Paleozoic zircon grains recorded by the early Devonian rhyolitic tuff and late Carboniferous sandstone indicate that the early Paleozoic arc magmatic activities also occurred in the eastern BAB.

白乃庙弧带（BAB）石炭纪地层的沉积学和锆石U–Pb–Hf同位素分析为华北克拉通（NCC）的北缘提供了物源信息。BAB东部的晚石炭世地层以浅海相碳酸盐-碎屑沉积为主。碎屑锆数据表明：从下Sidaozhangpeng形成显示器（1）砂岩369 Ma和2522麻，具有两个主要的峰年龄ε_的Hf（吨）的值- 25.9至-分别20.4和2.2-6.4，; （2）从上Sidaozhangpeng形成节目砂岩384马一个显著年龄峰，与ε_的Hf（吨）-25.3至-14.5。根据痕量元素代理确定碎屑锆石母体岩石类型表明，原生岩类型包括长英质岩（73％）和镁铁质岩（22％），以及次要碱性岩（5％），这意味着大陆弧环境。西部和东部BAB石炭纪地层的U–Pb–Hf年代显示出不同的物源：西部BAB中的石炭纪沉积物来自早古生代岩浆岩，微块体（Hunshandake块体）和NCC基底。东部BAB的石炭系地层主要是局部泥盆纪岩浆岩，而新始古纪的NCC基岩则是次要输入。