砂板岩

基岩主要有花岗岩及砂板岩组成，现场调查发现，花岗岩以及砂岩的卸荷深度普遍较高，部分段内花岗岩强风化段达50m。

Bedrock is composed with granite and sand-slate . According to on-site survey , the unloading depth of granite and sandstone is generally high , with some sections of strongly weathered granite 50m long .

活动性差的硅铝质砂板岩形成岩体的天然屏障；

The inactive sialic sand-slate is a natural barrier .

南水北调西线隧洞砂板岩互层围岩稳定性研究

Stability study of tunnel with interbedded sand slate rock in west route of South-to-North water diversion

原生结构面主要是砂板岩和薄至中厚层大理岩中的层面，以及绿片岩中的片理面。

Primary surface is mainly layer of sandstone , and slate and thin to medium thick layer of marble , and the schistosity plane of greenschist .

从工程区的自然稳定斜坡调查入手，利用前期勘测的横剖面结果，获得工程区的砂板岩边坡和大理岩边坡的自然稳定斜坡的坡形数据；

First of all , according to the research on the transverse sections of the stable nature slope in the engineering area , the slope shape data of the sand-slate and marble slopes are gained .

分布区土壤主要是花岗岩、砂页岩、板岩发育的山地黄壤和黄棕壤。

Soil of distribution is brown soil and yellow-brown soil which developed from granite , sandy shale , slate .

江西星子县玉泉山青石矿矿体为中元古界双桥山群上亚群浅变质含粉砂绢云母板岩。

The bluestone body in Yuquanshan of Xingzi , Jiangxi consists of a slightly metamorphosed silt-bearing sericite slate of the Middle Proterozoic Shuangqiaoshan Upper Subgroup .