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Amurian Microplate
The Amur plate (or Amurian plate; also occasionally referred to as the China plate, not to be confused with the Yangtze plate) is a minor tectonic plate in the northern and eastern hemispheres. The Amurian Plate is named after the Amur River, which forms the border between the Russian Far East and Northeast China. It is bounded on the north, west, and southwest by the Eurasian plate, on the east by the Okhotsk plate, to the southeast by the Philippine Sea plate along the Suruga Trough and the Nankai Trough, and the Okinawa plate, and the Yangtze plate.Yu. F. Malyshev, et al. Deep structure of the Amur lithospheric Plate border zone. The Amurian Plate may have been involved in the 1975 Haicheng earthquake and the 1976 Tangshan earthquake in China. Boundaries The Amurian microplate is a division within the Eurasian plate, with an unknown western boundary, defined on the south by the Qinling suture zone in central China and the Baikal Rift Zone and Stanovoy Mountains on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Tectonic Plates
This is a list of tectonic plates on Earth#Surface, Earth's surface. Plate tectonics, Tectonic plates are pieces of Earth's crust and uppermost mantle (geology), mantle, together referred to as the lithosphere. The plates are around thick and consist of two principal types of material: oceanic crust (also called ''Sima (geology), sima'' from silicon and magnesium) and continental crust (''sial'' from silicon and aluminium). The composition of the two types of crust differs markedly, with mafic basaltic rocks dominating oceanic crust, while continental crust consists principally of lower-density felsic granite, granitic rocks. Current plates Geologists generally agree that the following tectonic plates currently exist on Earth#Surface, Earth's surface with roughly definable boundaries. Tectonic plates are sometimes subdivided into three fairly arbitrary categories: ''major'' (or ''primary'') ''plates'', ''minor'' (or ''secondary'') ''plates'', and ''microplates'' (or ''tertiary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mongolia
Mongolia is a landlocked country in East Asia, bordered by Russia to the north and China to the south and southeast. It covers an area of , with a population of 3.5 million, making it the world's List of countries and dependencies by population density, most sparsely populated sovereign state. Mongolia is the world's largest landlocked country that does not border an Endorheic basin, inland sea, and much of its area is covered by grassy steppe, with mountains to the north and west and the Gobi Desert to the south. Ulaanbaatar, the capital and List of cities in Mongolia, largest city, is home to roughly half of the country's population. The territory of modern-day Mongolia has been ruled by various nomadic empires, including the Xiongnu, the Xianbei, the Rouran, the First Turkic Khaganate, the Second Turkic Khaganate, the Uyghur Khaganate and others. In 1206, Genghis Khan founded the Mongol Empire, which became the largest List of largest empires, contiguous land empire i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean Peninsula
Korea is a peninsular region in East Asia consisting of the Korean Peninsula, Jeju Island, and smaller islands. Since the end of World War II in 1945, it has been politically divided at or near the 38th parallel between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK). Both countries proclaimed independence in 1948, and the two countries fought the Korean War from 1950 to 1953. The region is bordered by China to the north and Russia to the northeast, across the Amnok (Yalu) and Duman (Tumen) rivers, and is separated from Japan to the southeast by the Korea Strait. Known human habitation of the Korean peninsula dates to 40,000 BC. The kingdom of Gojoseon, which according to tradition was founded in 2333 BC, fell to the Han dynasty in 108 BC. It was followed by the Three Kingdoms period, in which Korea was divided into Goguryeo, Baekje, and Silla. In 668 AD, Silla conquered Baekje and Goguryeo with the aid of the Tang dy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after India, representing 17.4% of the world population. China spans the equivalent of five time zones and Borders of China, borders fourteen countries by land across an area of nearly , making it the list of countries and dependencies by area, third-largest country by land area. The country is divided into 33 Province-level divisions of China, province-level divisions: 22 provinces of China, provinces, 5 autonomous regions of China, autonomous regions, 4 direct-administered municipalities of China, municipalities, and 2 semi-autonomous special administrative regions. Beijing is the country's capital, while Shanghai is List of cities in China by population, its most populous city by urban area and largest financial center. Considered one of six ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Margin Of The Sea Of Japan
The eastern margin of the Sea of Japan is a zone of concentrated geological strain which extends several hundred kilometers and north–south along the eastern margin of the Sea of Japan. The margin has undergone convergence tectonics since the end of the Pliocene. It is believed to be an incipient subduction zone which defines the tectonic boundary between the Amurian Plate, Amurian and Okhotsk Plate, Okhotsk plates. This geological zone is seismically active and has been the source of destructive tsunamis. The feature runs off the west coast of Honshu, passes west of the Shakotan Peninsula on Hokkaido and through the Strait of Tartary, between Sakhalin and mainland Russia. Plate tectonics The Sea of Japan represents a back-arc basin that formed via geological rifting of continental crust from the late Oligocene to middle Miocene (28–13 million years ago). The Sea of Japan can be divided into sub-basins; the Japan Basin, Yamato Basin and Tsushima Basin. Seafloor spreading in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stanovoy Mountains
The Stanovoy Range (, ''Stanovoy khrebet''; ) is a mountain range located in the Sakha Republic and Amur Oblast, Far Eastern Federal District. It is also known as Sükebayatur and Sükhbaatar in Mongolian, or the Stanovoy Mountains or Outer Khingan Range in English. The range was first studied and scientifically described by Russian researcher Alexander von Middendorff. History The range formed the border between Russia and China from 1689 (Treaty of Nerchinsk) to 1858 ( Treaty of Aigun). Etymology The Evenks grouped the Dzhugdzhur, Stanovoy, and Yablonoi ranges under the name "Dzhugdzhur". In Evenk folklore this mountain system is known as the "backbone of the Earth". Geography The range runs roughly from west to east at the southern end of the Sakha Republic and the northern limit of Amur Oblast for roughly . It is bound by the Olyokma River in the west (which separates it from the Stanovoy Highlands to the west) and the Uchur River in the east (which separates it from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baikal Rift Zone
The Baikal Rift Zone is a series of continental rifts centered beneath Lake Baikal in southeastern Russia. Current strain in the rifts tends to be extending with some shear movement. A series of basins form along the zone for more than , creating a rift valley. The rifts form between the Eurasian Plate to the west and the Amur Plate to the east. Structures To the northwest of the rifts is the Siberian Craton, on the Eurasian Plate. The Sayan-Baikal and Mongolia-Okhotsk mobile belts are formations to the southeast of the rifts; beyond the Sayan-Baikal fold belt is the Amur Plate. Basins form along the rift. There are three basins in the area, the South Basin, Central Basin, and North Basin. In the North, half-grabens form smaller basins, such as the North Baikal Basin, and the Chara-Tokka Basin. The Central Basin is the deepest in the rift system. The largest fault it contains is the Morskiy Fault; however, another fault, the Primorsky is becoming the primary fault in the r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1976 Tangshan Earthquake
The 1976 Tangshan earthquake () was a 7.6 earthquake that hit the region around Tangshan, Hebei, China, at 3:42 a.m. on 28 July 1976. The maximum intensity of the earthquake was XI (''Extreme'') on the Mercalli intensity scale, Mercalli scale. In minutes, 85 percent of the buildings in Tangshan collapsed or were rendered unusable, all services failed, and most of the highway and railway bridges collapsed or were seriously damaged. The official count stated 242,469 deaths, while historians accepted at least 300,000 died, making it the Lists of earthquakes#Deadliest earthquakes, deadliest earthquake in recorded history (excluding the famine deaths from the 1556 Shanxi earthquake) and one of the worst list of disasters in China by death toll, disasters in China by death toll. Earthquakes The earthquake sequence comprised two shocks with magnitudes of at least 7.0. The first struck at 3:42:55 in the morning (local time), approximately under the southern part of Tangshan.. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1975 Haicheng Earthquake
On February 4, 1975, at 19:36 Chinese Standard Time, CST, an earthquake of 7.5 and Modified Mercalli intensity scale, intensity (MMI) IX hit the city of Haicheng, Liaoning, China. Much of the city was evacuated before the earthquake, so few died from building collapse; however, many died from fire and hypothermia in the subsequent days. The evacuees lived during the deep winter in self-made tents made of tree branches, bed sheets, Tarpaulin, tarps and straw,Photos of such tents taken in 1976 can be found in: 372 froze to death and 6,578 suffered frostbite, while a fire burned 341 to death and 980 suffered non-fatal burns.颤抖的地球—地震科学' (2005). Researched by CEA seismologists 冯万鹏,薑文亮,龚丽霞,公茂盛,胡进军; Revised by CEA seismologists 王文清,续春荣,张宝红; Edited by China Earthquake Administration, CEA chiefs 谢礼立,张景发. Tsinghua University Press. Pages XIII, 162. The fire was one of the most notable earthquake-induced List o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nankai Trough
The is a submarine trough located south of the Nankaidō region of Japan's island of Honshu, extending approximately offshore. The underlying fault, the ''Nankai megathrust,'' is the source of the devastating Nankai megathrust earthquakes, while the trough itself is potentially a major source of hydrocarbon fuel, in the form of methane clathrate. In plate tectonics, the Nankai Trough marks a subduction zone that is caused by subduction of the Philippine Sea plate beneath Japan, part of the Eurasian plate (Kanda et al., 2004). This plate boundary would be an oceanic trench except for a high flux of sediments that fills the trench. Within the Nankai Trough there is a large amount of deformed trench sediments (Ike, 2004), making one of Earth's best examples of accretionary prism. Furthermore, seismic reflection studies have revealed the presence of basement highs that are interpreted as seamounts that are covered in sediments (Ike, 2004). The northern part of the trough i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
