Formation of Chalk and Appinite

Chalk

Appinite

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Formation

Mineral Content

Compound Content

Metamorphism

Types of Metamorphism

Weathering

Types of Weathering

Erosion

Types of Erosion

Chalk is formed from lime mud, which accumulates on the sea floor which is then transformed into rock by geological processes.

Calcite, Clay, Clay Minerals, Quartz, Sand

Ca, NaCl, CaO

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Biological Weathering, Chemical Weathering

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Chemical Erosion, Coastal Erosion, Water Erosion

The formation of Appinite takes place deep beneath the Earth’s surface at around 150 to 450 kms, and are erupted rapidly and violently.

Amphibole, Carbonate, Garnet, Micas, Olivine, Phlogopite, Pyroxene

Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Silicon Dioxide, Titanium Dioxide

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Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Regional Metamorphism

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Chemical Weathering, Mechanical Weathering

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Chemical Erosion, Water Erosion, Wind Erosion

Chalk and Appinite Formation

Formation of rocks is a long process and hence, Chalk and Appinite 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 Chalk and Appinite, composition of Chalk and Appinite and their transformation.