Figure 1-5. Sutured contacts between large quartz grains in a carbonate-cemented (C) coarse sandstone or granule conglmerate of metamorphic quartz grains (Q). Note difference between sutured contacts (red arrows) and unmodified grain margins (black arrows).

       The grain at upper right has inclusions of kaolinite shown in the inset. They have nothing to do with pressure dissolution but are interesting to look at.

      Main photomicrograph was taken in cross-polarized light; field of view is 2.4 mm wide. Oriskany Sandstone, Pennsylvania, U.S.A.; Sample S-3-114; thin section S-3-114.

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