The first intrusive phase which constitutes the main part of the complexes is best differentiated and has a differentiation trend, due to gravitative crystallization differentiation, from peridotite facies and olivine-gabbro, facies to quartz-bearing norite-gabbro facies with basicity decreasing successively.

  • 第一侵入期构成岩体的主体部分,分异良好,由重力结晶分异形成自橄揽岩相、橄榄辉长岩相向含石英苏长辉长岩相的分异趋势,基性程度依次降低。

  • 互联网摘选 2025-01-20 12:36:11

    • 相关例句
    精确
    • 模糊
    • 词首
    • 词尾
    • 词义
    • 例句