Sequence of rock types, consisting of deep-sea sediments lying above basaltic pillow lavas, dykes, gabbro, and ultramafic peridotite. Some are the remnants of main oceanic crust, others of crust formed in back-arc basins.
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。