I found on the OneGeology website geology layers for Argentina and Chile but am unsure how to donwload them. http://portal.onegeology.org/OnegeologyGlobal/

Chile's data source http://www.sernageomin.cl/ Argentina's data source http://www.segemar.gov.ar/

And nowhere on either of their data source websites I can find a place to download the digital data. Can anyone find a way to get access to this data?