A sub-stage of the Lewisian, from about 1600–1100 Ma ago (Van Eysinga, 1975), named from Loch Laxford, north-western Scotland.
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。