[3] It is located in the Sierras de Cordoba mountain chain.
[4] It formed during the late Miocene, when a progressive shallowing of the subducting Nazca Plate caused volcanic activity to retreat 500 kilometres (310 mi) from the main Andes into the land behind the mountain chain.
[2] This did result in a typical shallow slab chemistry of the Pocho rocks.
[4] Volcanic activity at Pocho is dated about 4.7 +- 0.3 million years ago[5] and took place over two cycles.
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