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贵阳乌当下坝一带大冶组砾屑灰岩为层位东高面低,层数东少西多,横向变化明显的不连续楔状体,具有碎屑流沉积特征,代表较大型的水下水道沉积。东西方向变化反映出该地区海底坡向从西高东低转化为东高西低的翘板式变化。文中对砾屑的统计以统计点砾屑灰岩层的层厚为边长的正方形范围作为统计单位,按粒度分级分别统计板条状与粒状砾屑的数量,并对数据进行了方差分析,取得良好效果。
The Daye Formation gravelly limestone in the Wudangxiaba area, Guiyang, is a discontinuous wedge with low east-high surface, east-west-low layers and obvious horizontal variation. It has the characteristics of debris flow sedimentation and represents a larger sediment deposition . The east-west variation reflects the rocker-like change of the submarine aspect of the region from west-east to east-west-low. In this article, the statistics of gravel are taken as the statistical unit of the square range with the layer thickness of the side of the point of the statistical gravelly limestone layer, and the number of laths and gravel particles are respectively counted by grading, and the data are analyzed by variance to obtain Good effect.