4. The source area of K-rich magmatic rocks in the Dabie area is closely related to the enriched mantle, while the rocks in the lower Yangtze Valley area are more affined to the lower crust.
大别地区富k岩系的源区与富集地幔密切相关，下扬子地区的则与下地壳有更多亲缘关系。
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5. The source area of K-rich magmatic rocks in the Dabie area is closely related to the enriched mantle, while the rocks in the lower Yangtze Valley area are more affined to the lower crust.
