Alkaline rocks in the area are mainly composed of gray-black trachyte, and some breccia lava, syenite porphyry and syenite aplite.

  • 碱性岩的岩性组合主要以灰黑色粗面岩为主、并含有角砾熔岩,正长斑岩、正长细晶岩等。

  • 互联网摘选 2025-01-19 23:26:57

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