Figure 23. Vuggy, channel porosity in shelf wackestone, Louha quarry, Zakynthos.
Upper Cretaceous limestone. The irregular shape of this large, porous fracture indicates that some solution-enlargement occurred along the fracture, thus creating what is termed “channel porosity” in the Choquette and Pray (1970) classification. Plane-polarized light; long dimension = 5.1 mm.