This geological phenomenon marks the location where rock formations created at different times and by different forces adjoin.

Symbolism also attributes that evolution from water could relate to the geological phenomenon of the tectonic age.

Its waters show a permanent stratification due to a natural geological phenomenon.

They are unlike any terrestrial geological phenomenon.

By pure chance, they were witnessing the immediate aftermath of an underwater eruption, one of the planet's most important and least well observed geological phenomena.