Every rock is composed of one or more minerals. Siltstone composition which can be further divided into mineral and compound content. The Siltstone mineral content includes Calcite, Clay, Clay Minerals, Feldspar, Micas, Quartz, Sand, Silica, Silt.
Its compound content includes Aluminium Oxide, CaO, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide. You can also check out Properties of Siltstone.
Transformation of Siltstone
Every rock on earth undergoes transformation process. Siltstone is a type of Sedimentary Rocks. Transformation of Siltstone takes place in three steps- Metamorphism, Weathering and Erosion.
- Metamorphism of Siltstone:- Metamorphism is change in arrangement of minerals and texture in the pre-existing rocks. Siltstone rock does not undergo metamorphism. Unlike in formation of Siltstone, the rock does not melt into liquid magma.
- Weathering of Siltstone:- The breaking down of rocks when they come in contact with the Earth's atmosphere, ecology and water is called as weathering. Talking about weathering of Siltstone, this rock undergoes weathering. Weathering of Igneous rocks leads to formation of Sedimentary rocks. Weathering is further classified as chemical and mechanical weathering. Siltstone undergoes biological weathering, chemical weathering and mechanical weathering.
- Siltstone Erosion:- After formation of Siltstone, let’s move on to Siltstone Erosion. The weathered small fragments of rock are carried from one place to other by a process called erosion. Siltstone rock undergoes Erosion. Erosion is one of the important aspects in the life cycle of a rock. Siltstone undergoes chemical erosion, coastal erosion and glacier erosion.