144 



Subsurface GEOLOcrc Methods 



TABLE 3 

 Chart for Insoluble Residues 



Quartz 



Euhedral 



Subhedral 



Ap.hedral 



Loose 

 Drusy 

 Granulated 



I 



Unmodified 

 Lacy 

 Drusy 

 Dolomorphic 



Fine 



Coarse 



Dolomoldic Oomoldic 



\ / 



Skeletal 



Abundant 



Scattered 



Loose 



Aggregated 



Granulated 



Oolitic 



I . • 

 Concentric 

 Radiate 

 Sand-centered' 

 Massive 

 Clustered 

 Free 

 Drusy 



Chert 



Smooth 



Chalcedonic Ordinary 



Porcelaneous 



Granular 



Chalky 



Fine 



Coarse 



Unmodified Dolomoldic Oomoldic 



Lacy 



Drusy 



Dolomorphic 



\ / 



Skeletal 



Abundant 



Scattered 



