Columbia (supercontinent)

Columbia, also known as Nuna, was a supercontinent that formed about 1.8 to 1.5 billion years ago during Earth's early geological history. It assembled from earlier landmasses and was one of the first large landmasses to join together, existing for hundreds of millions of years. Columbia played a key role in Earth's development, influencing volcanic activity and the formation of mineral resources. Its breakup eventually led to the formation of smaller continents and the modern continents we recognize today. Understanding Columbia helps scientists trace Earth's ancient environmental conditions and the processes that shaped our planet’s crust.