The third stage is the Cretaceous fine-grained granite stocks and apophyses of mainly crustal source. They are formed by partial melting, remelting or anatexis of crustal materials dominated by sedimentary component.

  • 第三期燕山晚期细粒花岗岩小岩体是由以沉积组分为主的地壳物质经部分熔融、重熔或深熔而成。

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