320 Palmer — Notes on the Andes of N. W. Argentina. 



Fig. 4. 



Metamorphics 

 Faults 



Fig. 4. Sketch map of the Calchaqui Valley made from the hachure 

 map of the Crequi-Montfort Scientific Commission and barometric observa- 

 tions by the expedition. La Poma is at Lat. 24° 35' S. and Long. 68° 32' W. 



