A hypothetical ancient or primitive continental mass that geologists theorize was one of the earliest major landmasses on Earth.
From Greek 'archi-' (first, ancient) combined with English 'continent.' This geological term refers to proposed ancient supercontinents or early crustal formations.
Geologists use this concept to piece together Earth's distant past—by studying where ancient rocks came from, they can map continents that existed hundreds of millions of years ago and have since broken apart.
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