![]() Embedded within it are layers of clay, carbonates, shale, and iron-rich volcanic rocks, some of which have taken on vivid shades of red, yellow, and orange as they moved upward and interacted with water and minerals from other rock layers. ![]() The rising mass is not purely made of salt. Rock salt, or halite, is weak and buoyant, so it loses its brittleness and flows more like a liquid when under high pressure. The island is a salt dome-a teardrop-shaped mound of rock salt, gypsum, anhydrite, and other evaporites that has risen upward through overlying layers of rock. With its colorful soils, salt caves and mountains, and ocher-stained streams and beaches, Iran’s Hormuz island is rich with memorable geology.
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