杨树沟和卧虎沟地区北票组沉积特征

Sedimentary characteristic of Beipiao formation of Yangshugou and Wohugou districts

运用沉积学理论,阐述了辽西喀左杨树沟和卧虎沟地区北票组由河流体系、湖泊体系构成;进而分析了河道相、河岸相、泛滥盆地相和滨浅湖相、湖泊三角洲相(包括分流河道、沼泽及泥炭沼泽、间湾、河口坝和远砂坝、前三角洲等成因类型)、深湖相及浊积相的主要特征;重塑了该区北票组沉积环境演化史及聚煤环境;最后,指出卧虎沟地区北票组是今后找煤的重点地区。

Applying sedimentological theory, the article formulated that the Beipiao formation of Yangshugou and Wohugou districts is composed of fluvial system and lacustrine system; then analysed the main characteristic of stream channel facies, stream bank facies, flood basin facies, coastal shallow-lake facies, lake delta facies(including such genetic types as distributary channel, marsh and peat swamp, interdistributary bay, mouth bar and distal bar, and prodelta), deep-lake facies and turbidite facies; it remoulded Beipiao formation depositional enviroment evolution and coal-forming environment in this district, and at last, it pointed out that Wohugou district is the main coal-exploring district.