For decades, students around the world have memorized the same geography lesson: seven continents, split cleanly by oceans ...

Geologists confirmed the existence of a hidden continent named Zealandia beneath the South Pacific Ocean. Covering ...

Scientists confirm Zealandia, Earth's eighth continent, submerged almost two million square miles, with only 5% above water.

and volcanic rocks fully mapped out to the continent-ocean boundary," the team wrote in a paper describing the mapping and findings. Previous research identified that Zealandia’s crust is ...

The African regions are divided neatly by a boundary running ... support for the continental-drift theory. Among other recent evidence is the finding that the ocean floor is patterned with belts ...

But it is not as thick as other continents’ crust, typically between 30 and 46 kilometers. This makes the boundaries between Zealandia and the ocean less well defined and more difficult to discern.

If the plates there continue to diverge, millions of years from now eastern Africa will split from the continent to form a new landmass. A mid-ocean ridge would then mark the boundary between the ...

Continents and oceans have scientific definitions that ... pushing up mountain ranges such as the Himalayan belt. Physical boundaries such as rivers, oceans or mountain ranges have long served ...