Metamorphic Rocks: Definition, Formation, Types, Examples and Characteristics of Metamorphic Rocks

What are metamorphic rocks? Metamorphic rocks are rocks whose structure and appearance have been affected or changed by greater heat, pressure and chemical processes, usually while buried deep below the Earth’s surface or where tectonic plates meet. Exposure to these extreme conditions has altered the mineralogy, texture, and chemical composition of these …

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Sedimentary Rocks: Definition, Examples, Types, Formation and Characteristics of Sedimentary Rocks

What are Sedimentary Rocks? Sedimentary rocks are formed from the accumulation of sediments by water, ice or wind. A wide variety of live forms exist in sedimentary environments however, sedimentary rocks contain evidence of life in form of fossil. Fossil and fragments of fossil can build up to form limestone. Sedimentary rocks …

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Subclavius muscle Action, Origin and insertion, Blood supply and Innervation

Subclavius is a small muscle that arises from the costochondral junction of the first rib and is inserted into the subclavian groove on the inferior surface of the clavicle. Together with the pectoralis major and pectoralis minor, the subclavius form the anterior wall of the axilla. Subclavius Origin and Insertion The subclavius muscle originates by …

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