造山带复杂的地壳组成决定了侵入岩的地球化学特征，侵入岩的分布规律、就位机制受造山过程制约。
The complicated crustal composition of an orogenic belt determines the control of orogenic processes on the geochemistry, distribution and emplacement mechanism of intrusive rocks.
因此，笔者认为，可以用黄土的平均化学成分来代表大陆上部地壳的平均化学组成。
Therefore, the average chemical compositions of loess may be used to represent average chemical constituents of continental upper crust.
因此，笔者认为，可以用黄土的平均化学成分来代表大陆上部地壳的平均化学组成。
Therefore, the average chemical compositions of loess may be used to represent average chemical constituents of continental upper crust.
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