Thickness of the Upper Hell Creek hydrogeologic unit in the Williston structural basin

These data represent the thickness, in feet, of the Upper Hell Creek hydrogeologic unit in the Williston structural basin. The data are presented as ASCII text files...本数据集表征威利斯顿构造盆地（Williston structural basin）内上海尔克里克水文地质单元（Upper Hell Creek hydrogeologic unit）的厚度，单位为英尺。数据集以ASCII文本文件（ASCII text files）形式提供。