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陆相红层的古地磁学,是以赤铁矿不同结构相的成岩起源的资料为依据进行研究的。文中讨论了作为磁化载体的含颜料的赤铁矿和镜铁矿的相对作用,并且得出了所有磁化都是后生沉积获得的结论:即陆相红层的磁化是由成岩起源的。在陆相红层中,判明有A、B、C三种非粘滞磁化类型。A型磁化保留着原生磁化的一些特征,并与岩石的沉积年代最吻合。B型是复含磁化类型,是经过很长时间(大约10~6年)获得的,并在周围地磁场中经历了实质性的改变。C型磁化与岩石的成岩作用的年代无关,它相当于陆相红层成岩过程的最终产物。因此,这些磁化类型反映了红层成岩作用的不同发展阶段。成岩发展的速率,也就是磁化强度的改变速率是变化的,并且,它取决由各种局部地质作用的变化。
Palaeomagnetism of terrigenous red beds is based on the data of the diagenetic origin of different structural facies of hematite. In this paper, we discuss the relative roles of pigment-containing hematite and specular iron as a magnetization carrier, and conclude that all magnetization is derived from epigenetic deposition: that is, the magnetization of terrigenous red beds originated from diagenesis. In the terrestrial red layer, it was found that A, B, C three non-viscous magnetization types. Type A magnetization retains some of the features of primary magnetization and most closely matches the age of rock deposition. Type B is a complex magnetization type obtained over a long period of time (about 10 to 6 years) and undergoing substantial changes in the surrounding geomagnetic field. C-magnetization has nothing to do with the diagenesis of rocks, which is equivalent to the final product of diagenesis of terrigenous red beds. Therefore, these types of magnetization reflect the different phases of reddish diagenesis. The rate of diagenetic development, that is, the rate of change of magnetization, varies, and it depends on changes that are caused by various local geological processes.