COLCHESTER COAL - ELEV. (SPECIAL REPORT SERIES) --
Elevation of the Colchester Coal, 1994 (1:126,720)
Shows contours that define elevation ranges (feet above sea level) of the Colchester
Coal Member. Contour interval is 20 feet.
Digitized from unpublished work maps, some of which were the basis of the following
published maps: (1) Indiana Geological Survey Special Report 34, fig. 23. (2)
Indiana Geological Survey Special Report 43, fig. 24. (3) Indiana Geological
Survey Open-File Study 94-20.
FGDC metadata: COAL_COLCHESTER_ELEVATION_IN