The difference between argillaceous siltstone and silty mudstone
Shale or mudstone (Shale) (Mud rock) - is a kind of clay rock, formed from clay material after compaction, dehydration, recrystallization. The tiny mineral composition, particle size less than 1/256mm, with sheet or sheet bedding, easy to hit split into pieces with a hard object, permeable the worse is the difference between shale and mudstone shale is obviously flat bedding, adjacent two layers of particle size have the obvious difference, thickness less than 25cm thickness can reach tens of meters; shale bedding is not obvious, the monolayer thickness greater than 1 meters, and the texture is uniform.Argillaceous siltstone is mainly composed of silt and clay mineralsThe main composition of sandy mudstone is clay mineral, containing a small amount of sandThe fracture of the argillaceous siltstone is more rough than that of the sandy mudstoneHand rub, then silty sandstone sandstone more sensitive,The sandy mudstoneThe mudstone is easy to soften after soakingThe main difference is the size of particles and the difference between clay minerals and cement and sand content
Sandstone (Sandstone) -- from the water after handling sand deposited on the bed, after thousands of years of accumulation and strong physical effects by geological cementation and sandstone rock. Granular structure, good performance of permeability, the grain size of the 1/16-2mm particles, especially small, such as 1/16-1/250mm in diameter called siltstone. The main ingredients are: more than 52% components about 15% quartz; clay; goethite is about 18%; more than 10% other substances. If the quartz content is above 90%, called quartz sandstone.
