The Silurian was mainly medium sand, fine sand, siltstone and pelitic siltstone in shallow sea.
志留系沉积以滨浅海的中细砂岩、粉砂岩及泥质粉砂岩为主。
参考来源 - 塔里木盆地东北地区下古生界层序格架与沉积相研究·2,447,543篇论文数据,部分数据来源于NoteExpress
N a variety of fine sandstone formed from consolidated silt 粉砂岩
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