20240213 12550600 1.0 TRUE CNCN Structure Top (Ft; 500); MI (2021migs) MRCI Notes: Downloaded data from Battelle Box (Task 2 > Subtask 2.1 Strat-Structure Horizons > Michigan GIS Files for MRCI) as per input from B. Harrison, Michigan Geological Survey. Previously referenced as: Top Cincinnatian Structure (mgs 2021) Michigan  GIS Files for MRCI\Michigan GIS Files for MRCI\Top of Ordovician (Cincinnatian)\Top of Ordovician (Cincinnatian)\Top Cincinnatian Structure.shp