摘要
通过对辽西石炭纪含煤地层的详细研究，发现辽西石炭系不仅有太原组而且有较厚的本溪组，在地层及沉积特征方面与内蒙古大青山煤田的石炭系十分相似。两煤田均形成于近山滨海平原的古地理环境而非前人认为的山前冲积平原。
Detailed study on the Carboniferous coal bearing strata in the western Liaoning Province reveals the existence of Benxi Formation which is extremely similar to that developed in the Daqingshan coalfield, Inner Mongolia both in stratigraphical features and in sedimentary conditions. The palaeographical environment of these two coalfield was formed on a broad near mountainous littoral plain during Late Carboniferous. The tuffite layer in the roof of the 7th coal seam in Yangjiazhangzi coalfield discovered by authors provides an important indicator on a large scale of correlation with the volcanic event layer widely distributed in the middle part of Taiyuan Formation of eastern North China Platform.
出处
《现代地质》
CAS
CSCD
1996年第3期295-302,T002,共9页
Geoscience
基金
国家自然科学基金
关键词
辽西
石炭纪
沉积特征
地层对比
地层
western Liaoning Province, Carboniferous, stratigraphic correlation, sedimentary environment, volcanic event layer
