248 



STEPHENSON! TONGUE, A NEW TERM 



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cracks. The thickness of the 

 Mooreville tongue as shown by 

 the log of a well near Tupelo is 

 215 feet. 



The Mooreville tongue finds 

 its physiographic expression in a 

 subdued topography which is in 

 contrast to the hilly aspect of 

 both the area to the west under- 

 lain by the Tupelo tongue of the 

 Coffee sand, and the area to the 

 east underlain by the main body 

 of the Eutaw formation. 



Tupelo tongue of Coffee sand 

 member The Tupelo tongue of 

 the Coffee sand member of the 

 Eutaw is a body of dark gray, 

 chiefly massive, calcareous, glau- 

 conitic sand extending south- 

 ward from the Coffee sand of 

 northern Lee County into the 

 main body of the Selma chalk, 

 being underlain by a correspond- 

 ing tongue of chalk, the Moore- 

 ville tongue, which extends north- 

 ward from the basal part of the 

 Selma. The Mooreville tongue 

 loses its identity by merging 

 into — or minor intertonguing 

 with — the Coffee sand type of 

 deposit, in central and northern 

 Lee County, while the Tupelo 

 tongue loses its identity by merg- 

 ing into — or minor intertongu- 

 ing with — the chalk in southern 



