Figure 2-11. One single long column of a horizontal stylolite in a dolostone. The column features straight sides (small arrows) and a thick cap of insoluble residue (large arrow). An isolated column this long is relatively unusual; its formation may require a stable tectonic setting in which no differential compaction breaks the column.

      Photomicrograph was taken in plane-polarized light; field of view is 1.1 mm wide. Silurian, Pleasant Mills, Indiana; Sample ME56-11; thin section ME56-11. Sample collected by L. Bruce Railsback.

   
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