Much attention is paid to petrologic recognition marks and distribution regulation of volcanic event strata in coal bearing sequences of Taiyuan formation in the middle of North China.
研究了华北中部太原组含煤地层中火山事件层的岩石学识别标志和分布规律。
Much attention is paid to petrologic recognition marks and distribution regulation of volcanic event strata in coal bearing sequences of Taiyuan formation in the middle of North China.
研究了华北中部太原组含煤地层中火山事件层的岩石学识别标志和分布规律。
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