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Transcaucasia’s substantial natural resources have favoured economic development. The geologically recent rock layers around the Greater Caucasus, notably in the Kura-Aras Lowland and beneath the Caspian Sea, contain oil- and natural-gas-bearing deposits. Metallic ores are associated with magmatic rocks thrust up from deep in the crust: magnetite iron occurs near Daşkäsän in Azerbaijan; copper and molybdenum are found in several parts of the Transcaucasian upland; several metallic ores lie in the Greater Caucasus; and manganese is found near Chiatʿura in Georgia. Building materials include the rose-coloured tuffs (tufas) of Mount Aragats. The mineral-water springs of the Caucasus are widely renowned ...(100 of 3784 words)