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常常可以观察到元素的出现存在着一定的相关关系。特别是微量元素与一定的主要元素相关。这是由于它们具有相似的地球化学特征。相似的地球化学特征是控制元素的地球化学内聚现象的一个重要因素,例如Zr/Hf、K/Rb等。然而元素的分配也取决于一系列物理-化学参数。诸如温度、氧逸度、扩散速率等这些参数控制着矿物的形成。因此,固体与熔融体之间或固体与固体之间所发生的反应,都会影响元素的分配。不同矿物组合中共存相之间的元素分配特征,可受不同的成因过程控制: 1.结晶作用过程中形成的原始分配和分带现象; 2.固相线以下的还原作用(或氧化作用)以及平
It is often observed that there is a certain correlation between the appearance of the elements. In particular, trace elements associated with certain major elements. This is because they have similar geochemical characteristics. Similar geochemical features are an important factor in controlling the geochemical cohesion of elements such as Zr / Hf, K / Rb and the like. However, the distribution of elements also depends on a series of physical-chemical parameters. Parameters such as temperature, oxygen fugacity, diffusion rate, etc. control the formation of minerals. Therefore, the reaction between the solid and the melt or between the solid and the solid will affect the distribution of the elements. The elemental distribution characteristics of coexisting phases in different mineral assemblages can be controlled by different genetic processes: 1. The primary distribution and zonation formed during the crystallization; 2. The reduction (or oxidation) below the solidus And peace