Formation of Jasperoid and Claystone

Jasperoid

Claystone

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1 Formation

1.1 Formation

Jasperoid is a rare and peculiar type of metasomatic alteration of rocks. It is formed by extreme alteration of wall rocks within a shear zone which may occur in sediments, andesites, trachytes and basalts.

Claystone is generally quite soft, but can be hard and brittle. It forms due to weathering of mudstone.

1.2 Composition

1.2.1 Mineral Content

Clay Minerals, Pyrite, Quartz, Sulfides

Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz

1.3.2 Compound Content

NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO

Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, MgO, Silicon Dioxide

1.4 Transformation

1.4.1 Metamorphism

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1.4.3 Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism

Not Applicable

1.4.4 Weathering

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1.5.2 Types of Weathering

Not Applicable

Biological Weathering, Chemical Weathering, Mechanical Weathering

1.5.3 Erosion

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1.5.4 Types of Erosion

Not Applicable

Coastal Erosion, Water Erosion

Jasperoid and Claystone Formation

Formation of rocks is a long process and hence, Jasperoid and Claystone 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 Jasperoid and Claystone, composition of Jasperoid and Claystone and their transformation.