SPRINGFIELD COAL - THICK. (SPECIAL REPORT SERIES) ) --
Thickness of the Springfield Coal, 1995 (1:126,720)
Shows contours that define ranges of thicknesses (in feet) of the Springfield Coal Member. Retains different thickness ranges that were utilized in mapping various counties.
Digitized from unpublished work maps that were the basis of the following published maps: (1) Indiana Geological Survey Special Report 34, fig. 37. (2) Indiana Geological Survey Special Report 43, fig. 11. (3) Indiana Geological Survey Special Report 50, fig. 7. (4) Indiana Geological Survey Special Report 54, fig.8.
FGDC metadata: COAL_SPRINGFIELD_THICKNESS_IN