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Aguas Calientes (Jujuy) has a sedimentary Paleozoic "base", appearing through tecto-erosive vents. They form the core of the mountains, intermittently overlying a Meso-Cenozoic sedimentary cover. This sedimentary complex evolved in successive cycles, mostly marine. "Yacoraite formation" minerals are made up of dolomitic, travertine and argonite limestones.