with West Africa are similar to those of the Rogers and Santosh (2002) configuration, whereas the fits of India, East Antarctica, South Africa, and Australia with Laurentia are similar to their corresponding fits in the configuration of Rodinia. This continental configuration is based on the available geological reconstructions of 2.1–1.8 Ga orogens and related Archean cratonic blocks, especially on those reconstructions between South America vs West Africa, Western Australia vs South Africa, Laurentia vs Baltica, Siberia vs Laurentia, Laurentia vs Central Australia, East Antarctica vs Laurentia, and North China vs India. Of these reconstructions, the fits of Baltica and Siberia with Laurentia, South America with West Africa, and Southern Africa with Western Australia are also consistent with paleomagnetic data. The new configuration of the Columbia supercontinent was reconstructed by Guiting Hou (2008) based on the reconstruction of giant radiating dike swarms. The newer configuration of the Columbia (Nuna) has been suggested by Chaves and Rezende (2019) supported on available paleomagnetic data and fragments of 1.79-1.75 Ga large igneous provinces. Name and synonyms Rogers and Santosh proposed the name Columbia for a hypothetical supercontinent preceding Rodinia. They chose the name because critical evidence for the supercontinent was provided by the relationship between the Columbia region of North America (centered on the state of Washington) and east India. The naming is not universally accepted. In 1997, P.F. Hoffman proposed the name Nuna (from Inuit "lands bordering the northern oceans") for the Proterozoic core of Laurentia plus Baltica. Because Hoffman published his name earlier than Rogers and Santosh published theirs, there have been calls to use Nuna rather than Columbia, on the basis of scientific precedence. However, Hoffman's Nuna was essentially equivalent to an earlier Nena, and neither clearly referred to an early supercontinent, as Colombia did, rather than merely the core of this earlier supercontinent. Other earlier speculative continents included Hudsonland and Arctica, but Rogers and Santosh were the first to give a complete reconstruction of a Paleoproterozic supercontinent preceding Rodinia. See also Plate tectonics Supercontinent cycle References Notes Sources External links Multimedia Palaeoproterozoic development of the Nuna supercontinent Palaeoproterozoic development of Laurentia in the Nuna supercontinent Former supercontinents Proterozoic