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



rocks, and to the Pampean formations. In addition, fossils 

 were found, though the series of sediments in which they occur 



Fig. 1. 



Fig. 1. Location map of the Central Andes, showing part of the route of 

 the Central Andean Expedition of 1913. 



is in general singularly barren of fossils, in spite of its great 

 thickness and wide geographical extent. 



