经后期区域变质作用使磷块岩变质成磷灰岩矿床。
Through late regional metamorphism, the phosphorite was turned into the apatite deposit.
煤变质带的分布与后期侵入的辉绿岩的分布关系密切。
The zone of coal metamorphism is evident and related to the distribution of diabase which intrusion after main coal formation.
煤变质带的分布与后期侵入的辉绿岩的分布关系密切。
The zone of coal metamorphism is evident and related to the distribution of diabase which intrusion after main coal formation.
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