Formation of Scoria and Tuff

Scoria

Tuff

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1 Formation

1.1 Formation

Scoria forms when magma containing huge amount of dissolved gas flows from a volcano during an eruption.

Tuff is formed when large masses of ash and sand which are mixed with hot gases are ejected by a volcano and avalanche rapidly down its slopes.

1.2 Composition

1.2.1 Mineral Content

Apatite, Biotite, Calcite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz, Silica

Calcite, Chlorite

1.3.2 Compound Content

Ca, NaCl

Hydrogen Sulfide, Sulfur Dioxide

1.4 Transformation

1.4.1 Metamorphism

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1.4.2 Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

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

1.4.3 Weathering

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1.4.5 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

1.4.7 Erosion

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1.4.8 Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

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

Scoria and Tuff Formation

Formation of rocks is a long process and hence, Scoria and Tuff 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 Scoria and Tuff, composition of Scoria and Tuff and their transformation.