Stockdale: Stylolites 



41 



ing are ever-present features. The clay comes to rest as a 

 thin cap at the end of the columns. Its thickness is as variable 

 as the size of the stylolite. In the smallest sutures, the clay 



i 



Fig. 13. — Complex stylolite-seam of the Salem limestone. 

 From a quarry of W. McMillan and Son, Peerless district, 

 Lawrence County, Ind. 



Fig. 14. — Diagram of a small, jagged stylolite-seam of the 

 flower Harrodsburg limestone. Note the variety of shapes 

 of the interpenetrating parts. Natural size. 



is only microscopically visible, but, nevertheless, is present. 

 In the largest sutures, it is sometimes as much as an inch in 

 thickness. Shorter stylolites between longer ones bear caps 



