College of Geoscience and Surveying Engineering, China University of Mining and Technology (Beijing)

为了查明华北板块中南部高变质煤带的成因机制和形成时代,通过分析晚古生代以来华北板块构造体制的转换、岩石圈减薄、岩浆活动期次和高煤变质带的展布特征,以及对全国高变质煤层发育区煤层气富集的阐述,得出华北板块的后缘形成高变质煤带是由于扬子-华北板块印支期碰撞拼贴形成,中部所谓东西向的高变质煤带,实际上是郯庐、太行山和山西裂谷带发育的岩浆岩体导致的;除了高变质煤带常是煤层气的有利富集区外,燕山期以来的岩浆活动区也是煤层气勘探的有利区域。将构造、岩浆活动、变质作用和区域沉积、构造热演化结合起来研究,是解释华北板块中南部高煤变质带形成和煤层气富集区预测的有效方法。

In order to make sure the formation mechanism and age of the high coal metamorphic belts in central and southern parts of the North China Plate. The tr ansition of the North China plate tectonics in the late Paleozoic, lithospheric thinning, distribution of magmatic activity stages, characterization of high coal metamorphic belts, as well as the fact of coalbed methane enrichment of Chinese high metamorphoic coal belts had been studied in order to explore the existence of different unders tandings of the causes of high metamorphic coal belts in central and southern parts of the North China Plate. High metamorphic coal belts in the southern parts were fo rmed at the trailing edge of the North China Plate due to the Yangtze-North China Plate Indosinian collision collage in Triassic. The middle of the so-called east-west hi gh metamorphic coal belt formation was the result of Telemagmatic or Hypabyssal magmatic rocks development along Tanlu, Taihang fault belts and Shanxi rift zone. In addition to the high metamorphic coal which was often favorable coalbed methane-rich region, the Yanshan active region of magmatism was also favorable area for coal bed methane ( CBM) exploration. Combined the study of tectonothermal the structure, magmatism, metamorphism and regional deposition tectonothermal evolution wer e an effective method to explain the central and southern high coal metamorphic belt formation of the North China Plate and CBM forecast.

国家自然科学基金资助项目(41072119)；