Formation of Gossan and Comendite

Gossan

Comendite

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Formation

Earth movements can cause rocks to be either deeply buried or squeezed and hence the rocks are heated and put under great pressure.

Comendite is a type of Igneous rock which is formed due to cooling and solidification of lava or magma. It may form with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.

Composition

Mineral Content

Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, Zircon

Albite, Amphibole, Quartz

Compound Content

Aluminium Oxide, CaO, Fe, FeO, Silicon Dioxide, Sulphur

Al, Fe, Potassium Oxide

Transformation

Metamorphism

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Types of Metamorphism

Cataclastic Metamorphism, Regional Metamorphism

Weathering

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Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

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Types of Erosion

Chemical Erosion, Sea Erosion, Wind Erosion

Coastal Erosion, Water Erosion

Gossan and Comendite Formation

Formation of rocks is a long process and hence, Gossan and Comendite formation sounds very interesting. According to the formation, all rocks are divided into :Igneous Rocks, Sedimentary Rocks and Metamorphic Rocks. Igneous rocks form by crystallization of magma or lava. The magma is made up of various components of pre-existing rocks which have been subjected to melting either at subduction zones or within the Earth's mantle. Igneous rocks are generally seen at mid ocean ridges or in intra-plate hotspots. Sedimentary rocks are formed when sediments accumulate gradually. As the sediments are buried they get compacted as more and more material is deposited on top. Eventually the sediments become so dense that they form a rock. Metamorphic rocks are rocks which once existed as igneous or sedimentary rocks but have been subjected to varying degrees of pressure and heat within the Earth's crust. Get to know all about formation of Gossan and Comendite, composition of Gossan and Comendite and their transformation.