Atlantica

As reconstructed by geology, Atlantica was named by John Rogers (1996) to denote an ancient continent that formed during the Proterozoic (about 2.0 Ga) by the accretion of various ~2 Ga cratons now exposed in parts of West Africa and eastern South America. Atlantica assembled simultaneously with the continental block Nena around 1.9 Ga, was a constituent of the supercontinent Columbia, later participated in the Rodinia configuration, separated from Nena between ~1.6–1.4 Ga during fragmentation events, and contributed as a nucleus to the formation of West Gondwana in later Proterozoic–Phanerozoic reconstructions. The supplied non-geological uses of the name (Wikidata genus label; a DJ playlist track title) are modern secondary usages and contain no mythic origin narrative.

Atlantica is not an anthropomorphic or embodied entity but a geological reconstruction: a contiguous assemblage of Archean and Paleoproterozoic cratons (including Amazonia in present-day South America and the Congo, West Africa and North Africa cratons in Africa). Its signature is preserved in matching orogenic patterns such as the Araçuaí–West Congo orogen, whose deformation is still observable on both sides of the South Atlantic. No morphological description exists for the Wikidata gastropod genus in the provided sources; the musical usage provides only a track title without descriptive imagery.

Described in scientific terms, Atlantica 'behaved' as a tectonic entity through processes of accretion, orogeny, amalgamation into larger supercontinents (Columbia, Rodinia), and later fragmentation and dispersal of constituent cratons. Specific chronological behaviors in the sources include formation at ~2.0 Ga, assembly with Nena at ~1.9 Ga, separation from Nena between ~1.6–1.4 Ga during Columbia's breakup, participation in Rodinia around ~1.0 Ga and subsequent fragmentation between ~1.0–0.5 Ga. The sources contain no accounts of supernatural powers or behaviors.