Special Research Center 267
DEFORMATION PROCESSES IN THE ANDES
Freie Universitaet Berlin · Technische Universitaet Berlin · GeoForschungsZentrum Potsdam · Universitaet Potsdam
Sedimentation, tectonics and volcanism in the Salar de Antofalla area, southern Puna (NW Argentina) - Project D1B
Fig. 1 Westward view on the volcan Tebenquicho located in the northern part of the Salar de Antofalla area.
Fig. 2 Thick ignimbrites exposed in the Quebrada Archibarca (located west of Vega Caballo Muerto). An Ar-Ar age determination indicates a Pliocene age (3.64 ± 0.02 Ma).
Fig. 3 Northwestern part of the Salina del Fraile. Aeolian sediments of Permian age.
Fig. 4 View into a valley located NW of the village Antofalla. Late Eocene to early Miocene Quiñoas sediments disconformably overlain by Miocene Potrero Grande sediments (with thick intercalated ignimbrites).
Fig. 5 View on the eastern flank of the Salina del Fraile. In front, Permian sediments overlain by Late Eocene to Early Miocene Quiñoas sediments. In the background, white-coloured ignimbrites forming the uppermost part of Miocene Potrero Grande Formation.
Fig. 6 Quiñoas Fm. - reddish sand and siltstones of an fluvial distributary system.
Fig. 7 Progressive angular unconformity indicating synsedimentary tectonic activity during the Early Miocene.
Fig. 8 Westward view from the eastern border of the Salar de Antofalla. In front the evaporite-bearing sediments of the Mid-Miocene to Pliocene Juncalito Fm.
Fig. 9 Reddish sand and siltstones of the Mid-Miocene to Pliocene Juncalito Fm. unconformably overlain by green sandstones and conglomerates of the Pliocene to recent Escondida Fm.
Fig. 10 D1B team at work.
Fig. 11 Race at 5000 m altitude.
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