Environmental catastrophes marking the finale of a love affair

Sky tumbles, falls; mountains crumble to the sea - Ben E. King, "Stand By Me"

Heavens stop the rain; stars fall from the sky - The Doors, "Touch Me"

Sun dries up the sea - Carly Simon & James Taylor, "Devoted to You"

Until the rainbow burns the stars out in the sky
Until the ocean covers every mountain high
Until the dolphin flies and parrots live at sea
Until we dream of life and life becomes a dream
Until the day is night and night becomes the day
Until the trees and seas up, up and fly away
Until the day that 8 times 8 times 8 is 4
Until the day that is the day that are no more
Until the day the earth starts turning right to left
Until the earth just for the sun denies itself
Until dear Mother Nature says her work is through
Until the day that you are me and I am you

much better than songs that preposterously suggest that love will survive those disasters, also common

Momus' song Rhetoric is nothing but a list of these