Amandoi sunt la fel de vechi. Din cate inteleg muntii Dobrogei sau muntii de pe platforma iberica sunt mult mai vechi.
http://en.wikipedia.org/wiki/Geology_of_the_Alps#Breakup_of_Pangaea
"For these reasons, the material making up the Sierra de Guadarrama is of more ancient origin than many other well known mountain systems such as the Pyrenees, the Alps, the Andes and the Himalayas."
Sursa: http://en.wikipedia.org/wiki/Sierra_de_Guadarrama#Geology