I-Copper ivela ngoketshezi olushisayo, ikakhulukazi akhiwa ngamanzi, futhi likhishwa ngoMagma opholile. Lezi Magma, futhi okuyisisekelo sokuqhuma, zivela engxenyeni ephakathi phakathi komgogodla womhlaba nokuqothuka, okungukuthi, ingubo yomhlaba ukwakha i-Magma Chamber. Ukujula kwaleli gumbi kuvame phakathi kwe-5km ne-15km.

Ukwakheka kwamadiphozithi ethusi kuthatha amashumi ezinkulungwane zamakhulu ezinkulungwane zeminyaka, futhi ukuqhuma kwentaba-mlilo kuvame kakhulu. Ukuqhuma kwehlulekile kuncike ekuhlanganiseni kwamapharamitha amaningana isilinganiso somjovo we-magma, izinga lokupholisa nobulukhuni bokuqhekeka okuzungeze i-Magma Chamber.

Ukutholwa kokufana phakathi kokuqhuma kwentaba-mlilo ezinkulu kanye nama-sediments kuzokwenza ukuthi kusetshenziswe ulwazi olukhulu olutholwe yi-volcolologists ukuthuthukisa ukuqonda kwamanje kokwakhiwa kwama-porphyry sediments.