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Oolite
Oolite

Breccia
Breccia



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Formation of Oolite and Breccia

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1 Formation
1.1 Formation
Oolites form when layers of calcite are deposited around a sand grain or fossil piece and are rolled around in calm water, which makes them round.
Breccia is a clastic sedimentary rock which is composed of broken fragments of minerals or rock which are cemented together by a fine-grained matrix and it forms where broken, angular fragments of rock or mineral debris accumulate.
1.2 Composition
1.2.1 Mineral Content
Calcite, Chert, Clay, Dolomite, Quartz, Sand, Silt
Calcite, Clay, Feldspar, Phosphates, Quartz, Silica
1.2.2 Compound Content
Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, FeO, MgO
Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, Potassium Oxide, Sodium Oxide, Silicon Dioxide, Titanium 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
Burial Metamorphism, Cataclastic Metamorphism
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, Mechanical 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
Chemical Erosion

Oolite and Breccia Formation

Formation of rocks is a long process and hence, Oolite and Breccia 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 Oolite and Breccia, composition of Oolite and Breccia and their transformation.

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