In this region, the tectonic faults with NS direction develop, neutral-acid intrusive rocks and alkaline basalt eruptive rocks form two nearly NS direction magmatic rock belts.
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释义
区内近南北向隐伏断裂发育,中酸性侵入岩、碱性玄武喷发岩构成近南北向岩浆构造带;
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