see Horton (1999, Tectonics), Horton et al. (2001, GSA Bulletin).

Cerro Chorolque (5552 m altitude), a middle Miocene volcanic edifice at the Altiplano-Eastern Cordillera boundary, southern Bolivia.  Preservation of original volcanic morphology and limited incision of associated ejecta (visible in the foreground at 3800 m altitude) indicate very low rates of erosion in southern Bolivia since ~15 Ma, possibly affecting the structural evolution of the thrust belt [see Horton, 1999].

View west of Estarca wedge-top basin (foreground) and collapsed caldera Cerro Panizos (horizon), near Eastern Cordillera-Altiplano boundary, southern Bolivia.  See Horton (1998, GSA Bulletin).

View of Salar de Uyuni, large salt lake in west-central Altiplano.

View of > 1 km-thick section of steeply dipping, moderately folded Potoco Formation (Tiahuanacu Fm.), near Lake Titicaca, northern Altiplano.

Mechanical problems on the Altiplano.