Question

which is the oldest landmass of the earth how it separated

Answer 1

Pangaea (sometimes spelled Pangea), the most recent of a series of supercontinents on Earth, formed about 270 million years ago and broke apart about 200 million years ago. At this time most of the dry land on Earth was joined into one huge landmass that covered nearly a third of the planet's surface.

Answer 2

Answer:

The oldest known rocks that form landmassare to be found in Jack Hills, Western Australia, having formed over 4.374 billion years ago (to an accuracy of within 6 million years!).