Translation of "Rock's" in Portuguese

It is possible to determine a rock's age thanks to radioactive elements.

É possível estabelecer a idade de algumas rochas através de elementos radioativos.

Triton, Cymothoe from the rock's sharp brow / push off the vessels. Neptune plies amain / his trident-lever, lays the sandbanks low, / on light wheels shaves the deep, and calms the billowy flow.

Então Cimótoe / e Tritão, conjugando seus esforços, / desencravam de escolhos pontiagudos / alguns navios; o deus mesmo, com o tridente, / ergue outros, e por entre vastas sirtes / abre caminho e acalma o pélago; por fim, / sobre as rodas ligeiras do seu carro / livremente desliza à flor das ondas.

- "She herself hurled the swift lightning bolt of Jupiter from the clouds, scattered the boats, and overturned the seas with the winds; she snatched him in a whirlwind while he was breathing out flames from his pierced chest, and impaled him on a sharp rock."
- "She, hurling Jove's winged lightning, stirred the deep / and strewed the ships. Him, from his riven breast / the flames outgasping, with a whirlwind's sweep / she caught and fixed upon a rock's sharp crest."

"O raio rápido de Júpiter das nuvens / disparando, os navios dispersou, / os mares agitou com vendavais, / com turbilhão furioso arrebatou / aquele réu, de cujo peito traspassado / jorravam chamas; num rochedo pontiagudo / foi deixá-lo cravado. Isso ela fez!"