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湖南晚二叠世煤的变质作用类型,丰富多采;其中在岩浆热变质作用方面尤为突出。根据湖南各煤田煤种分带的组合特征,可以将其划为两个变质区—扬子区和南华区
The Late Permian coal metamorphism in Hunan Province is rich and abundant, of which the thermal metamorphism is particularly prominent. According to the combination characteristics of coal zoning in all coal fields in Hunan, it can be divided into two metamorphic zones - Yangzi and Nanhua