What are the weathering characteristics of sandstone, shale and mudstone?
Shale (Shale), shale is a sedimentary rock, complex composition, but having a thin sheet or sheet laminated joints is mainly formed by clay deposited by the pressure and temperature of rock, but mixed with detrital quartz, feldspar and other chemicals.
The quartz particles (sand) formation, stable structure, usually pale brown or red, mainly containing silicon, calcium, clay and iron oxide. The sandstone is a sedimentary rock composed mainly of sand and cement, the sand particle content is greater than 50%. in most of the sandstone is composed of quartz or feldspar.
The mudstone of weakly consolidated clay after Doushantou moderate (such as extrusion, dehydration, recrystallization and cementation etc.) can form a strong consolidation of mudstone and shale. The mudstone is consolidated into rocks, but the bedding is not obvious, or is massive, partial loss of plasticity, sedimentary rock and water does not immediate expansion.
