 It is made up of a collection of individual plutons made up of granodiorite, tonalite and diorite among other rocks.Most plutons of the North Patagonian Batholith are of Cretaceous Period to the Miocene age of the Neogene Period (135 Ma to 25-15 Ma), during the Mesozoic Era.Late Miocene to early Pliocene (10 to 5 Ma) leucogranites were also intruded.