Isopachs of total net coal in beds >1.2' thick, A - G coal zones, Danforth Hills coal field (dan*thkg)

These are shapefiles and ARC/INFO polygon coverages showing the isopachs of total net coal in beds greater than or equal to 1.2' thick for the A through G coal zones, Danforth Hills coal field. The coverage danathkg is the isopach coverage for the A coal zone; danbthkg is for the B coal zone, and so on.

本数据集包含丹福斯山煤田（Danforth Hills coal field）A至G煤组中，厚度不小于1.2英尺的煤层总净煤量的等厚线图（isopachs），以及对应的形状文件（shapefile）与ARC/INFO多边形覆盖数据集（ARC/INFO polygon coverages）。其中，覆盖数据集danathkg对应A煤组的等厚线覆盖数据集，danbthkg对应B煤组，其余煤组的覆盖数据集命名规则依此类推。