一、前言 河南地处中原,煤田分布广阔,煤炭资源丰富,煤种齐全,交通便利,为我国煤炭重要产地之一。 对于煤的变质问题,历来受到国内广大地质工作者的重视,提出了不少研究成果。笔者根据在河南工作多年来的经验,以二迭纪山西组二_1煤为对象,提出“区域环形带状变质规律及其成因”的一些看法,以期抛 I. Introduction Henan is located in the Central Plains, a vast coal field, rich in coal resources, coal is complete, convenient transportation, one of China’s major coal producing areas. For coal metamorphism, has always been the majority of domestic geological workers attention, put forward a lot of research results. Based on the experience of working in Henan for many years, the writer puts forward some opinions on “the law and cause of regional annular belt metamorphism”