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河北矾山铁磷矿床的薄层多旋回岩盆岩体由四个以上的旋回组成。较完整的旋回自下而上为:辉石岩→黑云母辉石岩→磷灰石岩→磁铁磷灰石岩→云朵状含辉石正长岩。根据岩石的结构构造和化学成分,岩浆粘度变化及矿物标型特征等分析,这种构造类型的形成是岩浆一次呈层状侵入,在岩浆冷却过程中,扩散热与矿物生成热达到平衡形成岩浆结晶区,这种岩浆结晶区按罗森布什规律与鲍恩反应序列晶出成上述旋回。薄层状多旋回构造形成后,由于岩浆管道中岩浆冷却收缩下降,导致旋回构造相应下沉而形成岩盆。
Thin-layer polycyclic rock bodies of the Fanshan iron-phosphate deposit in Hebei Province are composed of more than four cycles. The more complete gyration is bottom-up: pyroxene → biotite pyroxene → apatite → magnetite apatite → cloud-like pyroxene syenite. According to the structural and chemical composition of rocks, the change of magma viscosity and the characteristics of mineral types, the formation of this tectonic type is a lava intrusion of magma once. During the cooling of magma, the heat of fusion and mineral heat are balanced to form magma Crystalline region, this magma crystalline region according to Rosenbush law and Bowen reaction sequence crystal out of the above cycle. After the lamellar polycyclic structure is formed, due to the decrease of cooling and shrinkage of the magma in the magma pipeline, the swirling structure is correspondingly subsided to form a rock basin.