n.[地]沙巖

It passes mainly through the purple--color soft sandrock and mudstone in Triassic or Dyas Systems. 隧道主要通過(guò)三迭系、二迭系紫紅色軟質(zhì)砂巖、泥巖巖層。

The understratum, calcareous sandrock and conglomerate rock, generate dissolution of groundwater. 其下部鈣質(zhì)砂（礫）巖在地下水作用下產(chǎn)生溶蝕現(xiàn)象。

Sound shoot in course of sandrock failure at stope top and floor is of twin - peak character. 大姚銅礦采場(chǎng)頂?shù)装迳皫r在破壞過(guò)程中聲發(fā)射具有雙峰性,主破裂前存在聲發(fā)射相對(duì)平靜現(xiàn)象。

The regional geologic structure is complex.The rock mass is mainly composed of Jurassic sandrock and conglomerate. 其壩址區(qū)區(qū)域地質(zhì)構(gòu)造復(fù)雜，分布侏羅系中統(tǒng)河湖相沉積的厚層砂（礫）巖。

The article introduced characteristic of the sandrock water of Tangkou and Tingnan Coalmines, Zibo Mining Group Co. 文章根據(jù)淄博局唐口礦,特別是亭南煤礦砂巖水特性分析,提出治理方法,并付諸實(shí)施,取得良好效果。