m shale or formation 



ni limestone or rornxatwn 



m shale or rormatlon 



n limestone or rormation. 



m shale or rorma.tLon 



group 



ti limestone or formaiiori 



m siiale or rormation 



p sandstone or formation. 



m shale or formation 



m group 



A limestone or formation 



B shale or formation 



C sandstone or formation 



D shale or formation 



E sandstone or formation 



in slwle or formation 

 and m tense 



,^nOU i\uli n «/2/i p 



sandstone lenses 



v\\ 



_^^= > m shale or formation including ^ fire clay mem- 

 ber, c coat rnemher, and. d tire clay member 



