Figure 1-2. Sutured intergranular contacts (lage red arrows) between echinoderm fragments (E) and brachiopod fragments (B), and pressure-dissolved contacts (small red arrows) between those grains and smaller quartz grains in an silty seamy pyritic Lower Paleozoic brachiopod/echinoderm packstone.

      Photomicrograph was taken in plane -polarized light; field of view is 2.4 mm wide. US22/322 roadcut just east of Pfoutz Valley Road exit in northern Perry County, Pennsylvania; Sample PA2-4; thin section S-1-143. Sample collected by L. Bruce Railsback.

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