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Formation of Basaltic Trachyandesite and Phonolite


Formation of Phonolite and Basaltic Trachyandesite


Formation

Formation
Basaltic Trachandesite is a fine-grained, hard rock that forms when bits of lava shoot out of volcanoes.   
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
Olivine, Plagioclase, Pyroxene   
Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite   

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

Transformation
  
  

Metamorphism
Yes   
Yes   

Types of Metamorphism
Contact Metamorphism   
Contact Metamorphism   

Weathering
Yes   
Yes   

Types of Weathering
Biological Weathering   
Chemical Weathering, Mechanical Weathering   

Erosion
No   
Yes   

Types of Erosion
Not Available   
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion   

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Basaltic Trachyandesite and Phonolite Formation

Formation of rocks is a long process and hence, Basaltic Trachyandesite 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 Basaltic Trachyandesite and Phonolite, composition of Basaltic Trachyandesite and Phonolite and their transformation.

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