crystalisation
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Greisen — is a highly altered granitic rock or pegmatite. Greisen is formed by autogenic alteration of a granite and is a class of endoskarn.Greisens appear as highly altered rocks, partly coarse, crystalline granite, partly vuggy with miarolitic cavities … Wikipedia
Tessellated pavement — is a rare sedimentary rock formation that occurs on some ocean shores, so named because it fractures into square blocks that appear like tiles, or tessellations . It is formed when rock that has cracked through plate tectonic movement of the… … Wikipedia
