A supercontinent that formed 2700–2400 Ma ago, during the Neoarchaean era, and comprised what are now N. America, Greenland, Scandinavia, the Baltic region of Eurasia, W. Australia, and part of Africa.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。