Cerro Redondo (dome)
Lua error in package.lua at line 80: module 'strict' not found.Cerro Redondo is a lava dome complex in the northern Puna,[1] north of Rinconada.[2] It is situated over the Ordovician basement east of the Sierra de Rinconada. The lava domes were erupted along ring fractures on a preceding fall deposit containing blocks and breccia.[1] Another report indicates just one isolated dacite dome.[2] Intense hydrothermal alteration has occurred on the lavas.[3]
The breccia and pyroclastics are 12.54±1.1 mya old, determined from fission track dating of apatite.[2] The complex may be linked to a caldera together with the neighbouring Chinchillas and Pan de Azúcar centres. Each of them is associated with mineral deposits which were mined on Pan de Azúcar.[1] Cerro Redondo's breccia is flanked by normal faults and one reverse fault is located within the complex.[2]
References
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