In order to study the attribution of Longshoushan Terrane, the crustal structure and stratigraphy of Longshoushan Terrane were discussed. Longshoushan Terrane has a double-crust structure with the crystalline basement and sedimentary cover. The crystalline basement composes of Longshoushan Group. Longshoushan Group is mainly banded-augen migmatite with amphibolite rocks, granitic gneiss, biotite-plagioclase gneiss interbedded and generally experienced amphibolite face regional metamorphism. The lower parts of sedimentary cover are consisted of Dunzigou Group of Jixianian System and Shaohuotonggou Formation of the top of Sinian System, missing Changcheng System, Nanhua System and Neoproterozoic. Dunzigou Group experienced burial metamorphism, and siltstone with phyllite-structure and sandstone recrystallized to some extent with stratigraphic grounds intact. Shaohuotonggou Formation of Sinian System is consisted of gravel-bearing phyllite and silty phyllite in the upper part and glacial conglomerate in the lower part. The moraine layer is accompanied with the Cambrian phosphorus-bearing strata. The overall crustal structures of Longshoushan Terrane are the same as North China Craton. The Yangtze Craton has three-fold crustal structure with crystalline basement, fold basement and sedimentary cover, and is different from North China Craton and Longshoushan Terrane. Longshoushan Terrane, therefore, should belong to North China Craton.%为了弄清楚龙首山地块的归属问题,对龙首山地块地壳结构和地层特征进行研究,发现龙首山地块具有由结晶基底和沉积盖层组成的双层地壳结构.该地块结晶基底由龙首山群组成,龙首山群岩性主要为一套条带状、眼球状混合岩夹斜长角闪岩、花岗质片麻岩、黑云斜长片麻岩等,普遍经历了角闪岩相区域变质作用.龙首山地块缺失长城系、青白口系和南华系,下部沉积盖层由蓟县系墩子沟群和震旦系顶部的烧火筒沟组构成.墩子沟群经历了埋藏变质作用,粉砂岩具千枚状构造,砂岩有一定程度的重结晶,地层层理保存完整.烧火筒沟组上部为含砾千枚岩、粉砂质千枚岩,下部为冰碛砾岩,冰碛砾岩总与寒武系含磷层相伴出现.地壳整体结构与华北克拉通基本特征相同,而扬子克拉通具有结晶基底、褶皱基底和沉积盖层3层地壳结构,与华北克拉通和龙首山地块迥异.因此,龙首山地块应归属于华北克拉通.
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