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Geology Of Myanmar
The geology of Myanmar is shaped by dramatic, ongoing tectonic processes controlled by shifting tectonic components as the Indian Plate slides northwards and towards Southeast Asia. Myanmar spans across parts of three tectonic plates (the Indian Plate, Burma Plate, Burma microplate and Shan Thai Block) separated by north-trending faults. To the west, a Oblique subduction, highly oblique subduction zone separates the offshore Indian Plate from the Burma Plate, Burma microplate, which underlies most of the country. In the center-east of Myanmar, a right lateral strike slip fault extends from south to north across more than . These tectonic zones are responsible for large earthquakes in the region. The India-Eurasia plate collision which initiated in the Eocene provides the last geological pieces of Myanmar, and thus Myanmar preserves a more extensive Cenozoic geological record as compared to records of the Mesozoic and Paleozoic eras. Myanmar is physiographically divided into three r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Structural Basin
A structural basin is a large-scale structural geology, structural formation of rock stratum, strata formed by tectonics, tectonic warping (Fold (geology), folding) of previously flat-lying strata into a syncline fold. They are geological depression (geology), depressions, the inverse of dome (geology), domes. Elongated structural basins are a type of geological Trough (geology), trough. Some structural basins are sedimentary basins, aggregations of sediment that filled up a depression or accumulated in an area; others were formed by tectonic events long after the sedimentary layers were deposited. Basins may appear on a geologic map as roughly circular or elliptical, with concentric layers. Because the strata dip toward the center, the exposed strata in a basin are progressively younger from the outside in, with the youngest rocks in the center. Basins are often large in areal extent, often hundreds of kilometers across. Structural basins are often important sources of coal, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sagaing Fault
The Sagaing Fault is a major fault in Myanmar, a mainly continental right-lateral transform fault between the Indian plate and Sunda plate. It links the divergent boundary in the Andaman Sea with the zone of active continental collision along the Himalayan front. It passes through the populated cities of Mandalay, Yamethin, Pyinmana, the capital Naypyidaw, Toungoo and Pegu before dropping off into the Gulf of Martaban, running for a total length of over . Discovery and early studies A partial visualization of an active fault trace that aligns with the present-day Sagaing Fault trace was recorded by Fritz Noetling, a geologist, in the book ''The Miocene of Burma'' published in 1900. In 1913, Thomas Henry Digges La Touche of the Geological Survey of India acknowledged the existence of a plate boundary feature along the Shan Plateau's western margin in Mandalay, including the one dividing metamorphic stratas of the Sagaing Hills from the Central Tertiary Basin. While analysing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andaman Islands
The Andaman Islands () are an archipelago, made up of 200 islands, in the northeastern Indian Ocean about southwest off the coasts of Myanmar's Ayeyarwady Region. Together with the Nicobar Islands to their south, the Andamans serve as a maritime boundary between the Bay of Bengal to the west and the Andaman Sea to the east. Most of the islands are part of the Andaman and Nicobar Islands, a Union Territory of India, while the Coco Islands and Preparis Island are part of the Yangon Region of Myanmar. The Andaman Islands are home to the Andamanese peoples, Andamanese, a group of indigenous people made up of a number of tribes, including the Jarawas (Andaman Islands), Jarawa and Sentinelese. While some of the islands can be visited with permits, entry to others, including North Sentinel Island, is banned by law. The Sentinelese are generally hostile to visitors and have had Uncontacted peoples, little contact with any other people. The Indian government and coast guard protect th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andaman Sea
The Andaman Sea (historically also known as the Burma Sea) is a marginal sea of the northeastern Indian Ocean bounded by the coastlines of Myanmar and Thailand along the Gulf of Martaban and the west side of the Malay Peninsula, and separated from the Bay of Bengal to its west by the Andaman Islands and the Nicobar Islands. Its southern end is at Breueh Island just north of Sumatra, with the Strait of Malacca further southeast. Traditionally, the sea has been used for fishery and transportation of goods between the coastal countries and its coral reefs and islands, which are popular tourist destinations. The fishery and tourist infrastructure was severely damaged by the December 2004 Indian Ocean earthquake and tsunami. Geography Location The Andaman Sea, which extends over 92°E to 100°E and 4°N to 20°N, occupies a very significant position in the Indian Ocean, yet remained unexplored for a long period. To the south of Myanmar, west of Thailand, and north of Indonesia, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patkai
The Pat-kai (Pron:pʌtˌkaɪ) or Patkai Bum ( Burmese: ''Patkaing Taungdan'') are a series of mountains on the Indo-Myanmar border falling in the northeastern Indian states of Arunachal Pradesh, Nagaland and Upper Burma region of Myanmar. In Tai-Ahom language, Pat means ''to cut'' and Kai means ''chicken''. Geography The Patkai range mountains, part of Purvanchal Range, are not as rugged as the Himalayas and the peaks are much lower. Features of the range include conical peaks, steep slopes and deep valleys. Three mountain ranges come under the Patkai: the Patkai-Bum, the Garo-Khasi-Jaintia hills and the Lushai Hills. The Garo-Khasi range is in the Indian state of Meghalaya. Mawsynram and Cherrapunji, on the windward side of these mountains are the world's wettest places, having the highest annual rainfall. The climate ranges from temperate to alpine due to differences in altitude. The Pangsau Pass offers the most important route through the Patkai. The Ledo Ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naga Hills
The Naga Hills, reaching a height of around , lie prominently on the border of India and Myanmar. They are part of a complex mountain system, and the parts of the mountain ranges inside the States and territories of India, Indian states of Nagaland, Manipur and the Administrative divisions of Burma, Burmese Naga Self-Administered Zone are called the Naga Hills. The highest point of the Naga hills is Mount Saramati (). Etymology The term "Naga" refers to the Naga people, who were called "Naga" or "Naka" in the Burmese language, meaning "people with pierced ears".Shimray, R. R. (1985), ''Origin and Culture of Nagas'', Pamleiphi Shimray, New Delhi, page 41, History In British India, the major part of the hills came under the Naga Hills District, British India, Naga Hills District. A part of the Naga Hills under the British India control was coalesced into a district in 1866. The boundaries of the Naga Hills District were gradually expanded by annexation of the territories of seve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arakan Mountains
The Arakan Mountains, natively referred as Rakhine Yoma () and technically known as the Southern Indo-Burman Range, are a mountain range in western Myanmar, between the coast of Rakhine State and the Central Myanmar Basin, in which flows the Irrawaddy River. It is the most prominent of a series of parallel ridges that arc through Assam, Nagaland, Manipur, Mizoram and Myanmar. The Arakan Mountains run from Cape Negrais in the south to Manipur, India in the north. They include the Naga Hills, the Chin Hills, and the Patkai range which includes the Lushai Hills. The mountain chain is submerged in the Bay of Bengal for a long stretch and emerges again in the form of the Andaman and Nicobar Islands. Etymology The word ''Arakan'' is derived from the Sanskrit word ''Rakshasa'' (राक्षस) meaning ''demon'', a term used to refer to the inhabitants of the region. Geology and formation The Arakan Mountains and the parallel arcs to the west and east were formed by compression ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neogene
The Neogene ( ,) is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period million years ago. It is the second period of the Cenozoic and the eleventh period of the Phanerozoic. The Neogene is sub-divided into two epochs, the earlier Miocene and the later Pliocene. Some geologists assert that the Neogene cannot be clearly delineated from the modern geological period, the Quaternary. The term "Neogene" was coined in 1853 by the Austrian palaeontologist Moritz Hörnes (1815–1868). The earlier term Tertiary Period was used to define the span of time now covered by Paleogene and Neogene and, despite no longer being recognized as a formal stratigraphic term, "Tertiary" still sometimes remains in informal use. During this period, mammals and birds continued to evolve into modern forms, while other groups of life remained relatively unchanged. The first human ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accretionary Wedge
An accretionary wedge or accretionary prism forms from sediments accreted onto the non- subducting tectonic plate at a convergent plate boundary. Most of the material in the accretionary wedge consists of marine sediments scraped off from the downgoing slab of oceanic crust, but in some cases the wedge includes the erosional products of volcanic island arcs formed on the overriding plate. An accretionary complex is a current (in modern use) or former accretionary wedge. Accretionary complexes are typically made up of a mix of turbidites of terrestrial material, basalts from the ocean floor, and pelagic and hemipelagic sediments. For example, most of the geological basement of Japan is made up of accretionary complexes. Materials within an accretionary wedge Accretionary wedges and accreted terranes are not equivalent to tectonic plates, but rather are associated with tectonic plates and accrete as a result of tectonic collision. Materials incorporated in accretionary wedge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tibetan Plateau
The Tibetan Plateau, also known as the Qinghai–Tibet Plateau or Qingzang Plateau, is a vast elevated plateau located at the intersection of Central Asia, Central, South Asia, South, and East Asia. Geographically, it is located to the north of Himalayas and the Indian subcontinent, and to the south of Tarim Basin and Mongolian Plateau. Geopolitically, it covers most of the Tibet Autonomous Region, most of Qinghai, western half of Sichuan, Southern Gansu provinces, southern Xinjiang province in Western China, Bhutan, the Administrative divisions of India, Indian regions of Ladakh and Lahaul and Spiti district, Lahaul and Spiti (Himachal Pradesh) as well as Gilgit-Baltistan in Pakistan, northwestern Nepal, eastern Tajikistan and southern Kyrgyzstan. It stretches approximately north to south and east to west. It is the world's highest and largest plateau above sea level, with an area of . With an average elevation exceeding and being surrounded by imposing mountain ranges that har ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Convergent Boundary
A convergent boundary (also known as a destructive boundary) is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other, a process known as subduction. The subduction zone can be defined by a plane where many earthquakes occur, called the Wadati–Benioff zone. These collisions happen on scales of millions to tens of millions of years and can lead to volcanism, earthquakes, orogenesis, destruction of lithosphere, and deformation. Convergent boundaries occur between oceanic-oceanic lithosphere, oceanic-continental lithosphere, and continental-continental lithosphere. The geologic features related to convergent boundaries vary depending on crust types. Plate tectonics is driven by convection cells in the mantle. Convection cells are the result of heat generated by the radioactive decay of elements in the mantle escaping to the surface and the return of cool materials from the surface to the mantle. These convection cells bri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
