SPRINGFIELD COAL - ELEV. (SPECIAL REPORT SERIES) --
Elevation of the Springfield Coal, 1995 (1:126,720)
Shows contours that define elevation ranges (feet above sea level) of the Springfield Coal Member. Contour interval is 20 feet.
Digitized from unpublished paper maps that were the basis of the following published maps: (1) Indiana Geological Survey Special Report 34, fig. 13. (2) Indiana Geological Survey Special Report 43, fig. 26. (3) Indiana Geological Survey Special Report 50, fig. 19. (4) Indiana Geological Survey Special Report 54, fig. 11.
FGDC metadata: COAL_SPRINGFIELD_ELEVATION_IN