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磁化率各向异性(AMS)表征岩石及其组成矿物的低场磁化率在不同方向上的变化.AMS以其高精度、经济省时和无损测量等优点,广泛应用于地学各个领域.火成岩原生的磁组构可用于分析岩石结构,指示熔岩流、火山碎屑流、浅成侵入岩以及深成岩体的岩浆流动方向、侵位方式和岩浆来源,研究岩石在侵位期间经历的构造事件,从而进行火成岩同构造侵位过程的研究;而利用次生磁组构则可分析岩石在侵位期后经历的改造作用.AMS结合传统岩石学、构造学方法,能有效解决特定的地质问题.
Magnetic susceptibility anisotropy (AMS) characterizes the change of magnetic susceptibility of rock and its component minerals in different directions.AMS is widely used in all fields of geology due to its advantages of high precision, economical and time-saving and non-destructive measurement. Can be used to analyze rock structure and indicate lava flows, pyroclastic flows, shallow intrusive rocks, magmatic flow direction, emplacement patterns and magmatic sources of plutonic rocks, and to study the tectonic events experienced by rocks during emplacement The study of the emplacement process of igneous rocks is carried out, while the secondary magnetic structure can be used to analyze the alteration of rocks after emplacement.AMS can effectively solve the specific geological problems by combining the traditional petrology and tectonic methods.