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Chalk
Chalk

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Formation of Chalk and Sandstone

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1 Formation
1.1 Formation
Chalk is formed from lime mud, which accumulates on the sea floor which is then transformed into rock by geological processes.
Sandstone is a sedimentary rock which forms from cemented sand-sized clasts. It forms when sand layers are buried under sediments of sand.
1.2 Composition
1.2.1 Mineral Content
Calcite, Clay, Clay Minerals, Quartz, Sand
Calcite, Clay, Clay Minerals, Feldspar, Micas, Quartz
1.2.2 Compound Content
Ca, NaCl, CaO
Aluminium Oxide, CaO, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide
1.3 Transformation
1.3.1 Metamorphism
19% Sedimentary Rocks Rocks have it !
19% Sedimentary Rocks Rocks have it !
1.3.2 Types of Metamorphism
Not Applicable
Not Applicable
1.3.3 Weathering
78% Sedimentary Rocks Rocks have it !
78% Sedimentary Rocks Rocks have it !
1.3.4 Types of Weathering
Biological Weathering, Chemical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
1.3.5 Erosion
86% Sedimentary Rocks Rocks have it !
86% Sedimentary Rocks Rocks have it !
1.3.6 Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion

Chalk and Sandstone Formation

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