STRATIGRAPHIC CONFORMITY AND UNCONFORMITY 299 
posed here, by introducing the term Paenaccordanz (penaccordance). His 
scheme thus includes: 
Accordanz= conformity (strata parallel). 
Discordanz= unconformity (strata divergent) = clinunconformity. 
Paenaccordanz= approximate conformity (strata nearly parallel) =paruncon- 
formity. ; 
Paenaccordanz is not, however, a perfect equivalent of parunconformity. 
It suggests a structural gradation, which, of course, actually exists; but it 
fails to emphasize the vital contrast between unconformity due to crustal 
deformation and unconformity due to crustal oscillation. 
