This paper documents the first detailed structural analysis of the Lüliang Massif in the Trans-North China Belt, North China Craton. A nappe, made up of a Terrigeneous and Mafic Unit (TMU) derived from an oceanic basin thrust over gneisses and volcanic-sedimentary rocks, is interpreted as a magmatic arc deposited upon a TTG basement. The nappe is rooted to the west in the Trans-North China Suture that separates the Fuping Block from the Western Block. Nappe stacking, coeval with a top-to-the-SE synmetamorphicD 1 event, is dated around 1890-1870 Mausing chemical U-Th/Pb EPMA datings on monazite and U-Pb LA-ICP-MS dating on zircon. A second D 2 ductile event, characterized by SE-verging folds, reworks the D 1 structures. D 2 is the first event recorded in the late-orogenic sedimentary series that unconformably covers the metamorphic units formed during D 1. These lithological, structural and geochronological results are correlated with those described in the eastern massifs of Hengshan, Wutaishan and Fuping. The Trans-North China Belt resulted from the collision of the Fuping Block and the Western Block after a westward-directed subduction and subsequent closure of an oceanic basin where the TMU was deposited.