supercontinents
/ˌsupərˈkɑntɪnənts/
noun
- Very large landmasses that include most or all of Earth's continents joined together, especially in the geological past.
- Studying supercontinents helps geologists understand how Earth's surface has changed over billions of years.
- The movement of tectonic plates slowly assembled and later split apart ancient supercontinents.
- Scientists believe that the supercontinent Pangea began to break apart about 200 million years ago.