三个褶皱构造中一些常量元素变化的初步探讨

VARIATIONS IN SOME MAJOR ELEMENTS IN THREE FOLD STRUCTURES——A PRELIMINARY DISCUSSION

通过三个褶皱构造中系统采集并分析了21个样品,显示出一些常量元素的局部调整变化规律。 褶皱运动中的几种构造地球化学作用,包括氧化作用、水解作用、去硅作用、粘土化作用和化学亲合作用等,控制着一些常量元素的迁移、集中和分布。

21 samples were systematically collected from three fold structures and 19 of them were analyzed. Although the chemical composition f changing rocks in the fold structures is affected by a variety of factors and many different physical parameters, local modifiable variations in some major elements in the fold structures are still recognized.Presented in this paper is a preliminary conclusion that some tectono-geochemical processes involved in folding movement include oxidation, hydrolysis, desilicification, clayization and che-mical affiliation which would control the migration, concentration and distribution of some ma-jor elements in the fold structures. These geochemical processes reflect the correlations be-tween tectonic movement and material migration and the unity between tectonic stress field and geochemical field.