see Horton and DeCelles (1997,Geology 1997); Horton and DeCelles (2001, Basin Research)
 

Modern Chaco Plain (a possible modern analogue for the Camargo syncline)

Composite satellite image of the westernmost Chaco Plain, roughly 400 km by 150 km.  This region comprises the front of the central Andean fold-thrust belt and proximal part of the modern foreland basin system.  Three major rivers debouch onto the Chaco Plain, depositing fluvial megafans.  These features serve as modern analogues to ancient deposits studied within the fold-thrust belt (see photos in Eastern Cordillera category).