A sandstone characterized by the presence of less than 15% mud matrix, with between 5% and 25% of the grains being rock fragments, and there being more rock fragments than feldspar present. See dott classification.
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。