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Formation of Flint and Phonolite


Formation of Phonolite and Flint


Formation

Formation
Flint is formed by the decomposition and compaction of various organisms such as sponges and diatoms under the water.   
Phonolite are formed due to alkaline igneous activities and are generally formed in thick continental crustal areas or in Cordilleran subduction zones.   

Composition
  
  

Mineral Content
Silicon   
Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite   

Compound Content
Silicon Dioxide   
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide   

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Contact Metamorphism   

Weathering
No   
Yes   

Types of Weathering
Not Applicable   
Chemical Weathering, Mechanical Weathering   

Erosion
Yes   
Yes   

Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion   
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion   

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Flint and Phonolite Formation

Formation of rocks is a long process and hence, Flint and Phonolite formation sounds very interesting. According to the formation, all rocks are divided into :Igneous Rocks, Fossil 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 Flint and Phonolite, composition of Flint and Phonolite and their transformation.

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Fossil Rocks

Fossil Rocks

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