地槽区、地台区和地洼区岩浆岩的特征,陈国达教授已有规律性的总结。在湘赣地区(范围指湖南资兴、江西萍乡、丰城、乐平等地)的几个地洼型煤田中,常见有基性、中性和酸性岩浆侵入到中生代含煤地层或煤层中,多形成岩脉或岩床,部分地区有酸性——基性岩浆喷发,形成一层数米至数百米厚的火山喷出岩复盖在含煤地层之上,在煤田中形成壮观的火山岩景象。在以往的煤田地质工作中,对侵入含煤层中的岩浆岩仅限于岩性简单描述, Trough area, platform area and depression depression magmatic rock characteristics, Professor Chen Guoda has a regular summary. In some low-lying coalfields in Hunan-Jiangxi region (areas ranging from Zixing in Hunan, Pingxiang in Jiangxi, Fengcheng in Lecheng, etc.), basic, neutral and acidic magmas commonly intrude into Mesozoic coal-bearing formations or coal seams, Mostly formed dikes or bedrock, in some areas acidic-basic magmatic eruptions, the formation of a few meters to hundreds of meters thick volcanic eruption rock covered in coal-bearing strata above the formation of coal in the spectacular volcanic landscape . In the past geological work in the coalfield, the magmatic rocks intruded into coal seams are limited to lithology.