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我们已经习惯于不考虑岩石中微量元素原始分佈及重新分佈的关系,而根据这些元素含量的数据来探讨火成岩中某些微量元素分佈的规律性。毫无疑问,我们所分析过的任何火成岩在不同程度上都经受过许多次加叠作用,这些作用在漫长地质时期中引t起岩石中元素的迁移。这样就使得这些元素在侵入体同一岩相中同一种岩石的不同标本中的含量发生改变。研究岩石中微量元素存在形式的必要性在于,它能帮助我们确定该岩石中这些微量元素迁移的历史。许多研究者研究了火成岩中铀的存在形式。例如,聶耶尔别尔格推测,火成岩中有六种铀的存在形式,列奥诺娃和泰乌松提出了三种存在形式,但是,所有这些工作仅仅是研究了由岩浆
We are accustomed to not discussing the relationship between original distribution and redistribution of trace elements in rocks, and discussing the regularity of distribution of some trace elements in igneous rocks based on the data of these elements. Undoubtedly, any igneous rock that we have analyzed, to varying degrees, has undergone many sub-superimpositions that lead to the migration of elements in the rock during protracted geological periods. This changes the content of these elements in different specimens of the same rock in the same facies of the intrusive body. The need to study the presence of trace elements in rocks is that it helps us to determine the history of the migration of these trace elements in the rock. Many researchers have studied the existence of uranium in igneous rocks. For example, Niejerberger speculates that there are six forms of uranium present in igneous rocks and that Leovano and Taoussa propose three forms of existence, but all these work is only about the existence of magmas