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Fissures in Granite Countertops. Fissures in granite are incredibly common, especially in slabs with a large dramatic design. In the slab yard, with the slab sitting vertically, these fissures are present and yet not so easily recognized.In the excitement of choosing an exquisite slab it's easy to stand back and focus on the slab as a whole instead.ctual cracks will be different in composition than fissures. Cracks are not solid, so they will have an opening that debris can fall into. If you find cracks like the one shown below in your countertop, your granite company should be able to help you fill and hide them from view.
hippocampal fissure one extending from the splenium of the corpus callosum almost to the tip of the temporal lobe; called also hippocampal sulcus. longitudinal fissure the deep fissure between the two cerebral hemispheres.nterpalpebral fissure See palpebral aperture. optic fissure An invagination of the inferior portion of the optic stalk of the embryo. The hyaloid vessels pass through that fissure to supply the developing crystalline lens.