Formation of Greywacke and Dunite

Greywacke

Dunite

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Formation

Mineral Content

Compound Content

Metamorphism

Types of Metamorphism

Weathering

Types of Weathering

Erosion

Types of Erosion

Graywacke rock is a type of sedimentary rock, which is also known as immature sandstone, which is indurated, dark grey and consisting of poorly sorted angular to sub-angular, sand-sized grains.

Augite, Biotite, Calcite, Chlorite, Clay, Clay Minerals, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz

Aluminium Oxide, NaCl, CaO, Chromium(III) Oxide, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide

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Biological Weathering, Chemical Weathering

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Coastal Erosion, Sea Erosion, Wind Erosion

Dunite is a plutonic ultramafic igneous rock consisting almost m olivine. It can be formed in two ways.

Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene

Ca, CaO, Fe, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide

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Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

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Biological Weathering, Chemical Weathering, Mechanical Weathering

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Coastal Erosion, Glacier Erosion, Water Erosion

Greywacke and Dunite Formation

Formation of rocks is a long process and hence, Greywacke and Dunite 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 Greywacke and Dunite, composition of Greywacke and Dunite and their transformation.