【作者】 李增学； 王明镇； 常象春； 郭建斌； 韩美莲； 李江涛；

【Author】 LI Zeng-xue,WANG Ming-zhen,CHANG Xiang-chun,GUO Jian-bin,HAN Mei-lian,LI Jiang-tao (Shandong University of Science and Technology,Qingdao 266510, China)

【机构】 山东科技大学；

【摘要】 讨论了几种成煤作用观点或理论,运用突变或灾变的思路对海侵事件成煤作用进行了分析,指出由于我国华北晚古生代陆表海盆地的特殊古地理背景(如极为低平的盆地基底等),海侵过程常具快速侵进的特点,与普通的海侵过程相比具有“事件”性质,在沉积记录上表现为水体深度截然不同的沉积组合直接接触,其间具明显的相序缺失(非侵蚀间断缺失),海侵层在时空上具有较好的稳定性和等时性。同时提出不同成煤作用形成的煤在煤岩、煤质、煤的生烃能力上具有差异性。更多还原

【Abstract】 This paper discussed several viewpoints of theory of coal formation, analyzed the coal formation in transgressive event in saltatory and catastrophic way. It is noted that transgressive event was characterized by fast marine transgression due to the special palaeogeography in North China Paleozoic epicontinental basin, such as the dish-liked flat basement. Compared with common transgressive event, it was characteristic of episode and eventfulness, which demonstrated direct contacts between sedimentary assemblages with different depth of water body in sedimentary records. The facies sequences between them were absent distinctly and the transgressive beds were stable and present a basically isochronous surface in time and space. It suggested that coal beds formed by different incoalation showed differences in ingredients, coal quality, potential of hydrocarbon-generating and so on.更多还原