http://en.wikipedia....strial_material http://en.wikipedia....strial_material Oldest dated rocks http://en.wikipedia....strial_material 4.03 billion years old Oldest rocks known on Earth Oldest dated rocks https://en.wikipedia.org/wiki/Oldest_dated_rocks Into an hour-glass http://en.wikipedia....strial_material Recent research https://en.wikipedia.org/wiki/Oldest_dated_rocks (en) Turning th' accomplishment of many years Старейшие горные породы на Земле Oldest dated rocks staré zhruba 4 miliardy let