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Ariyalur District
Ariyalur district is an administrative district, one of the 38 districts in the state of Tamil Nadu in India. The district headquarters is located at Ariyalur. The district encompasses an area of 1,949.31 km². Gangaikonda Cholapuram, built by King Rajendra Cholan of Chola Empire, is a UNESCO World Heritage site situated in this district. The district is also known for its rich prehistoric fossils. Many fossils of gigantic molluscs and jawed fishes, at least one fossilized dinosaur egg, and several fragmentary fossils of sauropod and theropod dinosaurs have been discovered here. An on-site museum is being set up at Keelapazhur to preserve and conserve fossils. Ariyalur is noted for its cement industries and Jayankondam has huge reserves of lignite. History In 1995, Tiruchirappalli was trifurcated and the Perambalur and Karur districts were formed. Ariyalur district was carved out of Perambalur district on 1 January 2001. But, it was merged with Perambalur district ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Districts Of Tamil Nadu
A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby union club Other uses * Angle of list, the leaning to either port or starboard of a ship * List (information), an ordered collection of pieces of information ** List (abstract data type), a method to organize data in computer science * List on Sylt, previously called List, the northernmost village in Germany, on the island of Sylt * ''List'', an alternative term for ''roll'' in flight dynamics * To ''list'' a building, etc., in the UK it means to designate it a listed building that may not be altered without permission * Lists (jousting), the barriers used to designate the tournament area where medieval knights jousted * ''The Book of Lists'', an American series of books with unusual lists See also * The List (other) * Listing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Standard Time
Indian Standard Time (IST), sometimes also called India Standard Time, is the time zone observed throughout India, with a time offset of UTC+05:30. India does not observe daylight saving time or other seasonal adjustments. In military and aviation time, IST is designated E* ("Echo-Star"). It is indicated as Asia/Kolkata in the IANA time zone database. History After Independence in 1947, the Union government established IST as the official time for the whole country, although Kolkata and Mumbai retained their own local time (known as Calcutta Time and Bombay Time) until 1948 and 1955, respectively. The Central observatory was moved from Chennai to a location at Shankargarh Fort in Allahabad district, so that it would be as close to UTC+05:30 as possible. Daylight Saving Time (DST) was used briefly during the China–India War of 1962 and the Indo-Pakistani Wars of 1965 and 1971. Calculation Indian Standard Time is calculated from the clock tower in Mirzapur nea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lignite
Lignite, often referred to as brown coal, is a soft, brown, combustible, sedimentary rock formed from naturally compressed peat. It has a carbon content around 25–35%, and is considered the lowest rank of coal due to its relatively low heat content. When removed from the ground, it contains a very high amount of moisture which partially explains its low carbon content. Lignite is mined all around the world and is used almost exclusively as a fuel for steam-electric power generation. The combustion of lignite produces less heat for the amount of carbon dioxide and sulfur released than other ranks of coal. As a result, environmental advocates have characterized lignite as the most harmful coal to human health. Depending on the source, various toxic heavy metals, including naturally occurring radioactive materials may be present in lignite which are left over in the coal fly ash produced from its combustion, further increasing health risks. Characteristics Lignite is b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cement
A cement is a binder, a chemical substance used for construction that sets, hardens, and adheres to other materials to bind them together. Cement is seldom used on its own, but rather to bind sand and gravel ( aggregate) together. Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete. Concrete is the most widely used material in existence and is behind only water as the planet's most-consumed resource. Cements used in construction are usually inorganic, often lime or calcium silicate based, which can be characterized as hydraulic or the less common non-hydraulic, depending on the ability of the cement to set in the presence of water (see hydraulic and non-hydraulic lime plaster). Hydraulic cements (e.g., Portland cement) set and become adhesive through a chemical reaction between the dry ingredients and water. The chemical reaction results in mineral hydrates that are not very water-soluble and so are quite durable i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theropoda
Theropoda (; ), whose members are known as theropods, is a dinosaur clade that is characterized by hollow bones and three toes and claws on each limb. Theropods are generally classed as a group of saurischian dinosaurs. They were ancestrally carnivorous, although a number of theropod groups evolved to become herbivores and omnivores. Theropods first appeared during the Carnian age of the late Triassic period 231.4 million years ago ( Ma) and included all the large terrestrial carnivores from the Early Jurassic until at least the close of the Cretaceous, about 66 Ma. In the Jurassic, birds evolved from small specialized coelurosaurian theropods, and are today represented by about 10,500 living species. Biology Diet and teeth Theropods exhibit a wide range of diets, from insectivores to herbivores and carnivores. Strict carnivory has always been considered the ancestral diet for theropods as a group, and a wider variety of diets was historically considered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sauropoda
Sauropoda (), whose members are known as sauropods (; from '' sauro-'' + '' -pod'', 'lizard-footed'), is a clade of saurischian ('lizard-hipped') dinosaurs. Sauropods had very long necks, long tails, small heads (relative to the rest of their body), and four thick, pillar-like legs. They are notable for the enormous sizes attained by some species, and the group includes the largest animals to have ever lived on land. Well-known genera include ''Brachiosaurus'', ''Diplodocus'', ''Apatosaurus'' and ''Brontosaurus''. The oldest known unequivocal sauropod dinosaurs are known from the Early Jurassic. '' Isanosaurus'' and ''Antetonitrus'' were originally described as Triassic sauropods, but their age, and in the case of ''Antetonitrus'' also its sauropod status, were subsequently questioned. Sauropod-like sauropodomorph tracks from the Fleming Fjord Formation (Greenland) might, however, indicate the occurrence of the group in the Late Triassic. By the Late Jurassic (150 million ye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Heritage Site
A World Heritage Site is a landmark or area with legal protection by an international convention administered by the United Nations Educational, Scientific and Cultural Organization (UNESCO). World Heritage Sites are designated by UNESCO for having cultural, historical, scientific or other form of significance. The sites are judged to contain " cultural and natural heritage around the world considered to be of outstanding value to humanity". To be selected, a World Heritage Site must be a somehow unique landmark which is geographically and historically identifiable and has special cultural or physical significance. For example, World Heritage Sites might be ancient ruins or historical structures, buildings, cities, deserts, forests, islands, lakes, monuments, mountains, or wilderness areas. A World Heritage Site may signify a remarkable accomplishment of humanity, and serve as evidence of our intellectual history on the planet, or it might be a place of great natural beauty. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chola Empire
The Chola dynasty was a Tamil thalassocratic empire of southern India and one of the longest-ruling dynasties in the history of the world. The earliest datable references to the Chola are from inscriptions dated to the 3rd century BCE during the reign of Ashoka of the Maurya Empire. As one of the Three Crowned Kings of Tamilakam, along with the Chera and Pandya, the dynasty continued to govern over varying territories until the 13th century CE. The Chola Empire was at its peak under the Medieval Cholas in the mid-9th century CE. The heartland of the Cholas was the fertile valley of the Kaveri River. They ruled a significantly larger area at the height of their power from the later half of the 9th century till the beginning of the 13th century. They unified peninsular India south of the Tungabhadra River, and held the territory as one state for three centuries between 907 and 1215 CE. K. A. Nilakanta Sastri, ''A History of South India'', p 157 Under Rajaraja I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rajendra Chola
Rajendra Chola I (; Middle Tamil: Rājēntira Cōḻaṉ; Classical Sanskrit: Rājēndradēva Cōla; Old Malay: ''Raja Suran''; c. 971 CE – 1044 CE), often referred to as Rajendra the Great, and also known as Gangaikonda Chola (Middle Tamil: ''Kaṅkaikoṇṭa Cōḻaṉ''; ), and Kadaram Kondan (Middle Tamil: Kaṭāram koṇṭāṉ ; ) was a Chola Emperor who reigned between 1014 and 1044 CE. He is considered the most significant ruler in early eleventh century South Asia for his role in patronising the arts, encouraging trade and expanding the Chola Empire to is greatest extent . Born in Thanjavur to Rajaraja I and his queen Vanavan Mahadevi, Rajendra first assumed royal power as co-regent with his father in 1012 until the later's death in 1014, after which he ascended the Chola throne in his own right. During his reign, the Chola Empire was the largest and most significant political, military, and economic force is in the Indian subcontinent, and extended its reach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brihadisvara Temple, Gangaikonda Cholapuram
The Brihadisvara Temple is a Hindu temple dedicated to Shiva in Gangaikonda Cholapuram, Jayankondam, in the South Indian state of Tamil Nadu. Completed in 1035 AD by Rajendra Chola I as a part of his new capital, this Chola dynasty era temple is similar in design, and has a similar name, as the older 11th century, Brihadeeswarar Temple about to the southwest in Thanjavur. The Gangaikonda Cholapuram Temple is smaller yet more refined than the Thanjavur Temple. Both are among the largest Shiva temples in South India and examples of Dravidian style temples. The temple is also referred to in texts as ''Gangaikonda Cholapuram Temple'' or ''Gangaikondacholeeswaram Temple'' The main temple dedicated to Shiva is based on a square plan, but it displays other Hindu deities such as Vishnu, Durga, Surya, Harihara, Ardhanarishvara, and others. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
India
India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the north; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives; its Andaman and Nicobar Islands share a maritime border with Thailand, Myanmar, and Indonesia. Modern humans arrived on the Indian subcontinent from Africa no later than 55,000 years ago., "Y-Chromosome and Mt-DNA data support the colonization of South Asia by modern humans originating in Africa. ... Coalescence dates for most non-European populations average to between 73–55 ka.", "Modern human beings—''Homo sapiens''—originated in Africa. Then, interm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian State
India is a federal union comprising 28 states and 8 union territories, with a total of 36 entities. The states and union territories are further subdivided into districts and smaller administrative divisions. History Pre-independence The Indian subcontinent has been ruled by many different ethnic groups throughout its history, each instituting their own policies of administrative division in the region. The British Raj mostly retained the administrative structure of the preceding Mughal Empire. India was divided into provinces (also called Presidencies), directly governed by the British, and princely states, which were nominally controlled by a local prince or raja loyal to the British Empire, which held ''de facto'' sovereignty (suzerainty) over the princely states. 1947–1950 Between 1947 and 1950 the territories of the princely states were politically integrated into the Indian union. Most were merged into existing provinces; others were organised into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
