Proper noun
(geology) A former continent in Earth. A proposed ancient continent that would later merge together with the continents of Vaalbara and Superia to form the supercontinent Kenorland. It is observable as a former supercraton composed of the cratons of Slave, Wyoming, Dharwar, Zimbabwe
(geology) Synonym of Slave Craton, a sub-craton forming part of the Canadian Shield, the continental core of North America
Source: en.wiktionary.org