柴达木盆地北缘煤田构造特征的遥感解译

柴达木盆地北缘地区构造复杂,特征明显。在经过增强处理的ETM卫星遥感图像上,通过详细分析构造判别标志,对研究区线性构造进行解译,并对解译结果进行分区统计分析。线性构造走向玫瑰花图统计表明,构造走向在东、中、西部构造分区内呈现明显的规律性：西部地区断层发育较为复杂,中部地区断裂发育中等,东部地区断层发育比较单一,呈现过渡带性质。构造密度等值线图显示,线性构造总体展布呈北西—南东向,与区域主干构造线方向一致,等值线图清楚的展示出断层发育的“南北分带、东西分块”的特征。

Remote Sensing Interpretation of Coalfield Structure in Northern Qaidam Basin

The structure of northern Qaidam Basin is complex but its characteristics are distinct. Through detailed structural distinguishing mark analysis on the enhanced ETM satellite remote sensing images, the lineaments in the research area have been interpreted and the results of interpretation have been statistical analyzed zone by zone. The rose diagrams of lineament indicated that the structural directions in eastern, middle and western subareas have obvious regularity, fault in western part is complex, while in middle part moderate, eastern part simple transitionally. The structural contour lines indicated that the lineament distribution is from NW to SE as a whole and accorded with main tectonic lines, zoning from north to south, blocking from east to west.