NEW PALEOMAGNETIC AND ISOTOPIC DATA ON THE MESOPROTEROZOIC IGNEOUS COMPLEX ON THE NORTHERN SLOPE OF THE ANABAR UPLIFT

Abstract

The existence of the Paleoproterozoic (2.1–1.5 Ga ago) supercontinent Columbia is one of the most debatable geological problems in the Late Precambrian geology. The subsequent evolution of the Siberian Craton and other ancient blocks within the supercontinent remains unclear as well. According to, the breakup of Columbia produced two supercratons. Arctica included Laurentia, Siberia, Baltica, North Australia, and North China. Atlantica was composed of Amazonia, Congo, West Africa, North Africa, and Rio de la Plata. The supercratons were subsequently integrated into the Neoproterozoic supercontinent Rodinia.