A phase of mountain building whose precise dates are uncertain but which probably occurred about 1800–1700 Ma ago, producing what is now a NW–SE belt in southern Tanzania, northern Zambia, and the eastern Democratic Republic of Congo.
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。