通柘煤田山西组沉积特征及沉积环境演化  

Sedimentary Characteristics and Sedimentary Environment Evolution of Shanxi Group in Tongzhe Coalfield

作　　者：尹世才 赵玉琳 石志衍 

机构地区：[1]河南省煤炭地质勘查研究总院,河南郑州450052

出　　处：《资源导刊（地球科技版）》2015年第2期4-6,共3页

摘　　要：通过研究通柘煤田山西组岩性和沉积旋回特征，将山西组划分为三个沉积阶段，根据沉积环境的演化，分析其对成煤作用的影响，认为区内山西组为-套堡岛-河流三角洲体系沉积，其中堡岛沉积体系以潮坪和渴湖相为主，这一体系为泥炭坪亚相的形成和发展创造了良好的古地理环境，加之大量繁殖的古植物，以及适宜的古气候和古构造组合，形成了厚度大、分布稳定的煤层。Through research on the lithology and sedimentary cycle characteristics of shanxi group in Tongzhe coalfield, this paper divides shanxi group into three sedimentary stages. According to evolution of the sedimentary environment, this paper analyses sedimentary environment＇ s influence on coal-forming process, and consider shanxi group as a set of Baodao-river delta sedimentary system, in which the Baodao sedimentary is given priority to tidal flat and lagoon facies. This sedimentary system provided favorable paleogeographic environment for the formation and development of peat flat parfacies. And with ancient plant blooms, appropriate ancient climate and ancient structure, a thick and stable distribution of coal seam formed here.

关 键 词：通柘煤田 沉积旋回 堡岛沉积体系 三角洲沉积体系 

分 类 号：P618.130.2[天文地球—矿床学]