VIRGINIA GEOLOGICAL SURVEY. 



PLATE IX. 



Fig- 1— Localitv at liichniund sluiwiiiji Lafayette foniiation overlviiiii ( alveil fniiiia- 

 tion. 



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I willy Lafa\ 

 LAFAYETTE FOPvMATlON OVERLYING CALVERT FORAfATION. 



-■ '''I '"^ W aNliiiinl,,!!. I). ( . Slhiwiiio Lafasellc loiinal imi nvcrl viii" (alvcvt 

 fonnalidn. ' • c- 



