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Shillong Plateau
The Shillong Plateau is a plateau in eastern Meghalaya state, northeastern India. The plateau's southern, northern and western ridges form the Garo, Khasi and Jaintia Hills respectively. The plateau shows numerous fracture lineaments in satellite images and has been subjected to extensive and compressive forces in the N-S and E-W direction respectively. Several deep earthquakes point to tectonic activity in the mantle, such as from the 1897 Assam earthquake along the blind Oldham Fault. See also *Karbi-Meghalaya plateau. *1897 Assam earthquake *Dauki fault The Dauki fault is a major Fault (geology), fault along the southern boundary of the Shillong Plateau that may be a source of destructive seismic hazards for the adjoining areas, including northeastern Bangladesh. The fault, inferred to go through ... References External links INIST-CNRSEncyclopædia Britannica {{Plateaus of india Geology of India Landforms of Meghalaya Plateaus of India ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plateau
In geology and physical geography, a plateau (; ; ), also called a high plain or a tableland, is an area of a highland consisting of flat terrain that is raised sharply above the surrounding area on at least one side. Often one or more sides have deep hills or escarpments. Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, and erosion by water and glaciers. Plateaus are classified according to their surrounding environment as intermontane, piedmont, or continental. A few plateaus may have a small flat top while others have wide ones. Formation Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, Plate tectonics movements and erosion by water and glaciers. Volcanic Volcanic plateaus are produced by volcanic activity. The Columbia Plateau in the north-western United States is an example. They may be formed by upwelling of volcanic magma or extrusion of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meghalaya
Meghalaya (, or , meaning "abode of clouds"; from Sanskrit , "cloud" + , "abode") is a state in northeastern India. Meghalaya was formed on 21 January 1972 by carving out two districts from the state of Assam: (a) the United Khasi Hills and Jaintia Hills and (b) the Garo Hills.History of Meghalaya State Government of India Meghalaya was previously part of Assam, but on 21 January 1972, the districts of Khasi, Garo and Jaintia Hills became the new state of Meghalaya. The population of Meghalaya as of 2014 is estimated to be 3,211,474. Meghalaya covers an area of approximately 22,430 square kilometres, with a length-to-breadth ratio of about 3:1.Meghalaya IBEF, India (2013) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garo Hills
The Garo Hills (Pron: ˈgɑ:rəʊ) are part of the Garo-Khasi range in Meghalaya, India. They are inhabited by the Garo people. It is one of the wettest places in the world. The range is part of the Meghalaya subtropical forests ecoregion. Demographics Garo Hills was a single district of British India. The region now comprises five districts. It has a total population of 1,103,542. Tura is the largest town with a population of about 74,858 located at the foothills of often cloud covered Tura peak. The town is centrally located to other popular game and wildlife sanctuaries in the district such as the national parks of Balphakram and Nokrek, and several natural limestone caves (the Siju Cave is among the longest in Asia). These places are rich reserves of natural flora and fauna and a refuge for endangered animals. Religion Languages Society The traditional Garo female dress is a piece of cloth around the waist and a blouse or vest. The men usually wear, in addition to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khasi Hills
The Khasi Hills () is a low mountain formation on the Shillong Plateau in Meghalaya state of India. The Khasi Hills are part of the Garo-Khasi-Jaintia range and connects with the Purvanchal Range and larger Patkai Range further east. Khasi Hills, and the whole Garo-Khasi-Jaintia range, are in the Meghalaya subtropical forests ecoregion. Khasi Hills, and the entire Meghalaya state was administratively part of Assam before 1970. In older sources in particular, the alternative transcription Khasia Hills is seen. The region is inhabited mainly by tribal Khasi dwellers, which are traditionally in various chieftainships, states known as the Khasi Hill States. One of its capitals, Sohra, is considered one of the wettest places in the world. The majority of Khasis are Presbyterians followed by Catholics and Anglicans. The region came under the Khasi Hills district, which was divided into West Khasi Hills and East Khasi Hills districts on 28 October 1976. The highest peak is Lum Sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jaintia Hills
The Khasi and Jaintia Hills are a mountainous region that was mainly part of Assam and Meghalaya. This area is now part of the present Indian constitutive state of Meghalaya (formerly part of Assam), which includes the present districts of East Jaintia Hills district, headquarter Khliehriat, West Jaintia Hills district, headquarter Jowai, East Khasi Hills district, headquarter Shillong, and West Khasi Hills district, headquarter Nongstoin. Jaintia Hills The Jaintia Hills are located further to the east from the Khasi Hills. The twelve Chiefs of the ''elaka'' (tribal province) of the ''Pnars'', a Khasi Sub-tribe are styled ''Dolloi'', and the land is called after them in Khasi: KA RI KHADAR DOLLOI (‘Land of 12 Tribal Chiefs‘) - they are in Nartiang itself (see the Raja, uniquely also styled, as premier Chief: ''U Kongsong''), and in Amwi, Jowai, Lakadong, Mynso, Nongbah, Nongjngi, Nongphyllut, Nongtalang, Raliang, Shangpung, Sutnga (see below; the Syiems ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mantle (geology)
A mantle is a layer inside a planetary body bounded below by a core and above by a crust. Mantles are made of rock or ices, and are generally the largest and most massive layer of the planetary body. Mantles are characteristic of planetary bodies that have undergone differentiation by density. All terrestrial planets (including Earth), a number of asteroids, and some planetary moons have mantles. Earth's mantle The Earth's mantle is a layer of silicate rock between the crust and the outer core. Its mass of 4.01 × 1024 kg is 67% the mass of the Earth. It has a thickness of making up about 84% of Earth's volume. It is predominantly solid, but in geological time it behaves as a viscous fluid. Partial melting of the mantle at mid-ocean ridges produces oceanic crust, and partial melting of the mantle at subduction zones produces continental crust. Other planetary mantles Mercury has a silicate mantle approximately thick, constituting only 28% of its ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1897 Assam Earthquake
The Assam earthquake of 1897 occurred on 12 June 1897, in Assam, British India at 11:06 UTC, and had an estimated moment magnitude of 8.2–8.3. It resulted in approximate 1,542 human casualties and caused catastrophic damage to infrastructures. Damage from the earthquake extended into Calcutta, where dozens of buildings were severely damaged, with some buildings partially collapsing. Trembles were felt across India, reaching as far as Ahmedabad and Peshawar. Seiches were also observed in Burma. Earthquake The earthquake occurred on the south–southwest-dipping reverse Oldham Fault that forms the northern edge of the Shillong Plateau. There was a minimum displacement on the main fault of 11 m, although some calculations have placed this figure at as high as 16 m; one of the greatest for any measured earthquake. The calculated area of slip extended 180 km along the strike and from 9–45 km beneath the surface, indicating that the entire thickness of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thrust Fault
A thrust fault is a break in the Earth's crust, across which older rocks are pushed above younger rocks. Thrust geometry and nomenclature Reverse faults A thrust fault is a type of reverse fault that has a dip of 45 degrees or less. If the angle of the fault plane is lower (often less than 15 degrees from the horizontal) and the displacement of the overlying block is large (often in the kilometer range) the fault is called an ''overthrust'' or ''overthrust fault''. Erosion can remove part of the overlying block, creating a ''fenster'' (or ''window'') – when the underlying block is exposed only in a relatively small area. When erosion removes most of the overlying block, leaving island-like remnants resting on the lower block, the remnants are called ''klippen'' (singular ''klippe''). Blind thrust faults If the fault plane terminates before it reaches the Earth's surface, it is referred to as a ''blind thrust'' fault. Because of the lack of surface evidence, blind thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oldham Fault
Oldham is a large town in Greater Manchester, England, amid the Pennines and between the rivers Irk and Medlock, southeast of Rochdale and northeast of Manchester. It is the administrative centre of the Metropolitan Borough of Oldham, which had a population of 237,110 in 2019. Within the boundaries of the historic county of Lancashire, and with little early history to speak of, Oldham rose to prominence in the 19th century as an international centre of textile manufacture. It was a boomtown of the Industrial Revolution, and among the first ever industrialised towns, rapidly becoming "one of the most important centres of cotton and textile industries in England." At its zenith, it was the most productive cotton spinning mill town in the world,. producing more cotton than France and Germany combined. Oldham's textile industry fell into decline in the mid-20th century; the town's last mill closed in 1998. The demise of textile processing in Oldham depressed and heavil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karbi-Meghalaya Plateau
Karbi-Meghalaya plateau is, in fact, an extension of the main Indian peninsular plateau and are originally two different plateaus - Karbi Anglong Plateau and Meghalaya plateau. ThMeghalaya plateauis traditionally divided into Garo, Khasi and Jaintia Hills. The region from the river Dhansiri in the east to the Singimari River on the west is about 400 km long with an average width of about 40 km, covering about 35, 291 km2. Karbi Plateau is pear-shaped and has an area of about 7000 km2. Its link with the Meghalaya plateau proper is towards the south through a patch of highly denuded and subdued senile terrain. Details It is believed that due to the force exerted by the northeastward movement of the Indian plate at the time of the Himalayan origin, a huge fault was created between the Rajmahal hills The Rajmahal Hills are located in the Santhal Pargana division of Jharkhand, India. They were located on the northern margin of the Gondwana supercontinent, and its hills are tod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dauki Fault
The Dauki fault is a major fault along the southern boundary of the Shillong Plateau that may be a source of destructive seismic hazards for the adjoining areas, including northeastern Bangladesh. The fault, inferred to go through the southern margin of the Shillong Plateau, is an east–west-trending reverse fault inclined towards the north. Marking the southern margins of Shillong Plateau (which is much steeper than the northern slope at about a height of 1500 m), the prominent East-West Dauki Fault System (5–6 km wide) is the most remarkable feature of the Plateau. This fault zone forms a sharp escarpment along the southern edge of the plateau. The steep escarpment indicates vertical displacement along the Dauki Fault Zone where the Bangladesh plains subside actively. Though the Dauki Fault Zone is shown as a single fault line on the geological map of Bangladesh (1990) but the images show that it is the combination of a number of en-echelon faults trending in different d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of India
The geology of India is diverse. Different regions of India contain rocks belonging to different geologic periods, dating as far back as the Eoarchean Era. Some of the rocks are very deformed and altered. Other deposits include recently deposited alluvium that has yet to undergo diagenesis. Mineral deposits of great variety are found in the Indian subcontinent in huge quantities. Even India's fossil record is impressive in which stromatolites, invertebrates, vertebrates and plant fossils are included. India's geographical land area can be classified into the Deccan Traps, Gondwana and Vindhyan. The Deccan Traps covers almost all of Maharashtra, a part of Gujarat, Karnataka, Madhya Pradesh and Andhra Pradesh marginally. During its journey northward after breaking off from the rest of Gondwana, the Indian Plate passed over a geologic hotspot, the Réunion hotspot, which caused extensive melting underneath the Indian Craton. The melting broke through the surface of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
