# From Freeze and Cherry (1979) - see Tables 2.2 and 2.4		
# Perm values are the mean of the log10 of the range provided, porosity values are the mean of the range provided
key	                      Perm	        Porosity
gravel_coarse	            -	            0.3
gravel_fine	              -	            0.32
sand_coarse	              -	            0.39
sand_fine	                -	            0.45
silt	                    -           	0.48
clay	                    -	            0.47
sandstone	                1.14155E-05	  0.18
siltstone	                -	            0.31
limestone_dolomite	      3.60991E-05	  0.2
limestone_karst	          -	            0.2
shale	                    1.14155E-08	  0.2
gravel	                  36.1	        -
sand_clean	              0.361	        -
silty_sand	              0.0361	      -
silt_loess	              0.0001142	    -
glacial_till	            1.14155E-06	  -
clay_unweathered_marine	  3.60991E-08	  -
unfractured_meta_igneous	1.14155E-09	  -
fractured_meta_igneous	  0.001142	    -