These cratons were formed between about 3.6 and 2.0 billion years ago and have been tectonically stable since that time.
وتم تشكيل هذه cratons قبل ما بين حوالي 3.6 و 2.0 بليون سنة، وقد تكتونيا مستقرة منذ ذلك الوقت.