| Title |
7. Geologically determined reconstruction of the supercontinent Pannotia, which probably existed near the Precambrian-Cambrian boundary, 600-540 million years ago [8]. The Pan-African-Brazilian (Pannotic; [18]) basins are shown to be closed, although some of them may have survived until the Cambrian ([11]). It is noteworthy that the authors [20] interpreted the paleomagnetic data as requiring the separation of Laurentia and Gondwana by more than 5,000 km at the Precambrian-Cambrian boundary. The interpretation is based primarily on geological arguments, since the paleomagnetic poles shown do not confirm such a close proximity of Laurentia and Gondwana [8]. Pacific ocean – Pacific Ocean; Extensional margin – expansion of the eastern margin of the Pacific Ocean; East Gondwana – the eastern part of the Gondwana supercontinent; Laurentia – the Lawrence supercontinent; Cadomian arc – the Kadoma magmatic arc; A – Arequipa massif; AM –Amazonian craton; B – Baltica (Russian craton); C– Congo craton; D-R-A – Delamerian-Ross |