But something about the cratons had long puzzled geologists. Some, such as the Kaapvaal craton in southern Africa, are topped by vast plateaus that are rimmed by dramatic escarpments. But cratons ...
The planet has "more stable formations of rock," called cratons, which "contain old 'roots' … from which tectonic plates extend," said Popular Mechanics. These cratons have had long-term ...
Sale of 'Apex' renews debate The two Precambrian cratons examined in the study are ... that were once part of a single landmass in central Africa and eastern Brazil, according to Fru.
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