Generalized thickness of the Madison Limestone and Englewood Formation, Black Hills, South Dakota.

This data set is a polygon coverage created in ARC/INFO that represents the generalized thickness of the Madison Limestone and Englewood Formation, Black Hills, South...本数据集为基于ARC/INFO创建的多边形覆盖数据，用于表征南达科他州布莱克山区域麦迪逊灰岩（Madison Limestone）与恩格尔伍德组（Englewood Formation）的概化厚度。