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Khondalite
Khondalite is a foliated metamorphic rock. In India, it is also called ''Bezwada Gneiss'' and ''Kailasa Gneiss''. It was named after the Khond tribe of Odisha and Andhra Pradesh because well-formed examples of the rock were found in the inhabited hills of these regions of eastern India. Distribution Khondalite is found in the Eastern Ghats between Vijayawada and Cuttack in India. but the term khondalite is also used to describe other rocks of similar composition found elsewhere in India as well as in Burma, Sri Lanka, the northeastern Helanshan region and the Inner Mongolia region of China. Composition Khondalite is quartz–manganese-rich garnet–rhodonite schist. It may also contain sillimanite and graphite. Feldspar may occur in some cases. Formation Khondalites are considered to be metasedimentary rocks formed during Archaean era. According to Lewis Leigh Fermor, the khondalite and the related charnockite of the Eastern Ghat region were formed when the Eastern Ghat b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khondalite Rock Formations At Rushikonda
Khondalite is a foliated metamorphic rock. In India, it is also called ''Bezwada Gneiss'' and ''Kailasa Gneiss''. It was named after the Khond tribe of Odisha and Andhra Pradesh because well-formed examples of the rock were found in the inhabited hills of these regions of eastern India. Distribution Khondalite is found in the Eastern Ghats between Vijayawada and Cuttack in India. but the term khondalite is also used to describe other rocks of similar composition found elsewhere in India as well as in Burma, Sri Lanka, the northeastern Helanshan region and the Inner Mongolia region of China. Composition Khondalite is quartz–manganese-rich garnet–rhodonite schist. It may also contain sillimanite and graphite. Feldspar may occur in some cases. Formation Khondalites are considered to be metasedimentary rocks formed during Archaean era. According to Lewis Leigh Fermor, the khondalite and the related charnockite of the Eastern Ghat region were formed when the Eastern Ghat b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khondalite Rocks At A Hillock Near Anandapuram
Khondalite is a foliated metamorphic rock. In India, it is also called ''Bezwada Gneiss'' and ''Kailasa Gneiss''. It was named after the Khond tribe of Odisha and Andhra Pradesh because well-formed examples of the rock were found in the inhabited hills of these regions of eastern India. Distribution Khondalite is found in the Eastern Ghats between Vijayawada and Cuttack in India. but the term khondalite is also used to describe other rocks of similar composition found elsewhere in India as well as in Burma, Sri Lanka, the northeastern Helanshan region and the Inner Mongolia region of China. Composition Khondalite is quartz–manganese-rich garnet–rhodonite schist. It may also contain sillimanite and graphite. Feldspar may occur in some cases. Formation Khondalites are considered to be metasedimentary rocks formed during Archaean era. According to Lewis Leigh Fermor, the khondalite and the related charnockite of the Eastern Ghat region were formed when the Eastern Ghat b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Konark Sun Temple
Konark Sun Temple is a (year 1250) Sun temple at Konark about northeast from Puri city on the coastline in Puri district, Odisha, India.Konark: India , Encyclopædia Britannica The temple is attributed to king of the about . Dedicated to the Hindu Sun God , what remains of the temple complex has the appearance of a high chariot with immense wheels and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodonite
Rhodonite is a manganese silicate minerals, inosilicate, (Mn, Fe, Mg, Ca)SiO3 and member of the pyroxenoid group of minerals, crystallizing in the triclinic system. It commonly occurs as cleavable to compact masses with a rose-red color (the name comes from the Greek ῥόδος ''rhodos'', rosy), often tending to brown because of surface redox, oxidation. Rhodonite crystals often have a thick tabular crystal habit, habit, but are rare. It has a perfect, prismatic Cleavage (crystal), cleavage, almost at right angles. The Mohs scale of mineral hardness, hardness is 5.5–6.5, and the specific gravity is 3.4–3.7; lustre (mineralogy), luster is vitreous, being less frequently pearly on cleavage surfaces. The manganese is often partly replaced by iron, magnesium, calcium, and sometimes zinc, which may sometimes be present in considerable amounts; a greyish-brown variety containing as much as 20% of calcium oxide is called ''bustamite''; ''fowlerite'' is a zinciferous variety containi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charnockite
Charnockite () is any orthopyroxene-bearing quartz-feldspar rock formed at high temperature and pressure, commonly found in granulite facies metamorphic regions, ''sensu stricto'' as an endmember of the charnockite series. Charnockite series The ''charnockite suite'' or ''series'' is a particularly widespread form of granofels. Granofels are one of the few non-foliated rocks to form under relatively high temperatures and pressures. This combination is generated only deep in the crust by tectonic forces that operate on a grand scale, so granofels is a product of regional, rather than contact, metamorphism. It is formed mostly from the granite clan of rocks, or occasionally from thoroughly reconstituted clays and shales. It is of wide distribution and great importance in India, Sri Lanka, Madagascar and Africa. It was named by geologist T. H. Holland in 1893 after the tombstone of Job Charnock, in St John's Church in Kolkata, India, which is made of this rock. Composition The c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charnockite
Charnockite () is any orthopyroxene-bearing quartz-feldspar rock formed at high temperature and pressure, commonly found in granulite facies metamorphic regions, ''sensu stricto'' as an endmember of the charnockite series. Charnockite series The ''charnockite suite'' or ''series'' is a particularly widespread form of granofels. Granofels are one of the few non-foliated rocks to form under relatively high temperatures and pressures. This combination is generated only deep in the crust by tectonic forces that operate on a grand scale, so granofels is a product of regional, rather than contact, metamorphism. It is formed mostly from the granite clan of rocks, or occasionally from thoroughly reconstituted clays and shales. It is of wide distribution and great importance in India, Sri Lanka, Madagascar and Africa. It was named by geologist T. H. Holland in 1893 after the tombstone of Job Charnock, in St John's Church in Kolkata, India, which is made of this rock. Composition The c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metamorphic Rocks
Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock (protolith) is subjected to temperatures greater than and, often, elevated pressure of or more, causing profound physical or chemical changes. During this process, the rock remains mostly in the solid state, but gradually recrystallizes to a new texture or mineral composition. The protolith may be an igneous, sedimentary, or existing metamorphic rock. Metamorphic rocks make up a large part of the Earth's crust and form 12% of the Earth's land surface. They are classified by their protolith, their chemical and mineral makeup, and their texture. They may be formed simply by being deeply buried beneath the Earth's surface, where they are subject to high temperatures and the great pressure of the rock layers above. They can also form from tectonic processes such as continental collisions, which cause horizontal pressure, friction, and distort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gneiss
Gneiss ( ) is a common and widely distributed type of metamorphic rock. It is formed by high-temperature and high-pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks. Gneiss forms at higher temperatures and pressures than schist. Gneiss nearly always shows a banded texture characterized by alternating darker and lighter colored bands and without a distinct cleavage. Gneisses are common in the ancient crust of continental shields. Some of the oldest rocks on Earth are gneisses, such as the Acasta Gneiss. Description Orthogneiss from the Czech Republic In traditional English and North American usage, a gneiss is a coarse-grained metamorphic rock showing compositional banding (gneissic banding) but poorly developed schistosity and indistinct cleavage. In other words, it is a metamorphic rock composed of mineral grains easily seen with the unaided eye, which form obvious compositional layers, but which has only a weak tendency to fracture ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jagannath Temple
The Jagannath Temple is an important Hindu temple dedicated to Jagannath, a form of Vishnu - one of the trinity of supreme divinity in Hinduism. Puri is in the state of Odisha, on the eastern coast of India. The present temple was rebuilt from the tenth century onwards, on the site of pre existing temples in the compound but not the main Jagannatha temple, and begun by Anantavarman Chodaganga, the first king of the Eastern Ganga dynasty. The Puri temple is famous for its annual Ratha Yatra, or chariot festival, in which the three principal deities are pulled on huge and elaborately decorated temple cars. Unlike the stone and metal icons found in most Hindu temples, the image of Jagannath (which gave its name to the English term ' juggernaut') is made of wood and is ceremoniously replaced every twelve or 19 years by an exact replica. It is one of the Char Dham pilgrimage sites. The temple is sacred to all Hindus, and especially in those of the Vaishnava traditions. Many gre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lewis Leigh Fermor
Sir Lewis Leigh Fermor, OBE, FRS (18 September 1880 – 24 May 1954), was a British chemist and geologist and the first president of the Indian National Science Academy and a director of the Geological Survey of India (1930-1935). His son was the writer and traveller Sir Patrick Leigh Fermor. Early life Fermor was born in Peckham in south London, the eldest of six children born to Lewis Fermor and Maria (née James); his middle name was given in honour of his father's best friend. His father was a clerk at the London Joint Stock Bank (acquired by the Midland Bank in 1917); his early retirement through ill health put the family in financial difficulties, and a subsequent attempt at setting up a sign-writing business met with little success.Patrick Leigh Fermor: An Adventure, Artemis Cooper, John Murray, 2012 Lewis Leigh Fermor was educated at Wilson's Grammar School in Camberwell and studied metallurgy at the Royal School of Mines, with scholarships at each, and winning the Mu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metasedimentary
In geology, metasedimentary rock is a type of metamorphic rock. Such a rock was first formed through the deposition and solidification of sediment Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles. For example, sand an .... Then, the rock was buried underneath subsequent rock and was subjected to high pressures and temperatures, causing the rock to recrystallize. The overall composition of a metasedimentary rock can be used to identify the original sedimentary rock, even where they have been subject to high-grade metamorphism and intense deformation. Types of metasedimentary rocks See also * References Metamorphic petrology {{petrology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feldspar
Feldspars are a group of rock-forming aluminium tectosilicate minerals, also containing other cations such as sodium, calcium, potassium, or barium. The most common members of the feldspar group are the ''plagioclase'' (sodium-calcium) feldspars and the ''alkali'' (potassium-sodium) feldspars. Feldspars make up about 60% of the Earth's crust, and 41% of the Earth's continental crust by weight. Feldspars crystalize from magma as both intrusive and extrusive igneous rocks and are also present in many types of metamorphic rock. Rock formed almost entirely of calcic plagioclase feldspar is known as anorthosite. Feldspars are also found in many types of sedimentary rocks. Compositions The feldspar group of minerals consists of tectosilicates, silicate minerals in which silicon ions are linked by shared oxygen ions to form a three-dimensional network. Compositions of major elements in common feldspars can be expressed in terms of three endmembers: * potassium feldspar (K-spar) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
