Mineral Resources
Online Spatial Data
Geology
by state
Illinois geologic units
Geologic units in Christian county, Illinois
Bond Formation
(Pennsylvanian (Kasimovian))
at surface, covers 81 % of this area
Bond Formation
Mattoon Formation
(Pennsylvanian (Kasimovian))
at surface, covers 13 % of this area
Mattoon Formation.
Shelburn-Patoka Formations undivided
(Pennsylvanian (Kasimovian))
at surface, covers 6 % of this area
Shelburn-Patoka Formations undivided.