22°22′S 66°08′W / 22.367°S 66.133°W [1]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
- ^ a b c d Prezzi, Claudia; Götze, Hans-Jürgen (November 2006). "3D modeling of buried intrusives in Pan de Azúcar zone (northern Puna, Argentina) from ground magnetic data". Journal of South American Earth Sciences. 22 (1–2): 89–97. doi: 10.1016/j.jsames.2006.08.004. hdl: 11336/76184.
- ^ a b c d Cladouhos, T.T.; Allmendinger, R.W.; Coira, B.; Farrar, E. (April 1994). "Late cenozoic deformation in the Central Andes: fault kinematics from the northern Puna, northwestern Argentina and southwestern Bolivia". Journal of South American Earth Sciences. 7 (2): 209–228. doi: 10.1016/0895-9811(94)90008-6.
- ^ Prezzi, Claudia; Caffe, Pablo J.; Somoza, Rubén (September 2004). "New paleomagnetic data from the northern Puna and western Cordillera Oriental, Argentina: a new insight on the timing of rotational deformation". Journal of Geodynamics. 38 (2): 93–115. doi: 10.1016/j.jog.2004.05.001. hdl: 11336/83497.
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22°22′S 66°08′W / 22.367°S 66.133°W [1]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
- ^ a b c d Prezzi, Claudia; Götze, Hans-Jürgen (November 2006). "3D modeling of buried intrusives in Pan de Azúcar zone (northern Puna, Argentina) from ground magnetic data". Journal of South American Earth Sciences. 22 (1–2): 89–97. doi: 10.1016/j.jsames.2006.08.004. hdl: 11336/76184.
- ^ a b c d Cladouhos, T.T.; Allmendinger, R.W.; Coira, B.; Farrar, E. (April 1994). "Late cenozoic deformation in the Central Andes: fault kinematics from the northern Puna, northwestern Argentina and southwestern Bolivia". Journal of South American Earth Sciences. 7 (2): 209–228. doi: 10.1016/0895-9811(94)90008-6.
- ^ Prezzi, Claudia; Caffe, Pablo J.; Somoza, Rubén (September 2004). "New paleomagnetic data from the northern Puna and western Cordillera Oriental, Argentina: a new insight on the timing of rotational deformation". Journal of Geodynamics. 38 (2): 93–115. doi: 10.1016/j.jog.2004.05.001. hdl: 11336/83497.
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