Formation of Pyroxenite and Tephrite

Pyroxenite

Tephrite

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Formation

Mineral Content

Compound Content

Metamorphism

Types of Metamorphism

Weathering

Types of Weathering

Erosion

Types of Erosion

Pyroxenites are ultramafic igneous rocks which are made up of minerals of the pyroxene group, such as augite and diopside, hypersthene, bronzite or enstatite.

Amphibole, Augite, Bronzite, Chromite, Diopside, Enstatite, Garnet, Hornblende, Hypersthene, Magnetite, Pyroxene

Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide

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Burial Metamorphism, Impact Metamorphism, Regional Metamorphism

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Biological Weathering, Chemical Weathering, Mechanical Weathering

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Chemical Erosion, Coastal Erosion, Water Erosion

Tephrite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.

Alkali feldspar, Nepheline, Plagioclase, Pyroxene

CaO, Carbon Dioxide, MgO, Silicon Dioxide

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Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

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Biological Weathering, Chemical Weathering, Mechanical Weathering

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Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion

Pyroxenite and Tephrite Formation

Formation of rocks is a long process and hence, Pyroxenite and Tephrite 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 Pyroxenite and Tephrite, composition of Pyroxenite and Tephrite and their transformation.