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Philippine Mobile Belt
In the geology of the Philippines, the Philippine Mobile Belt is a complex portion of the tectonic boundary between the Eurasian Plate and the Philippine Sea Plate, comprising most of the country of the Philippines. It includes two subduction zones, the Manila Trench to the west and the Philippine Trench to the east, as well as the Philippine Fault System. Within the Belt, a number of crustal blocks or microplates which have been shorn off the adjoining major plates are undergoing massive deformation. Most segments of the Philippines, including northern Luzon, are part of the Philippine Mobile Belt, which is bounded by the Philippine Sea Plate to the east, the Molucca Sea Collision Zone to the south, Sunda Plate to the southwest, and the South China Sea Basin to the west and north-west. To the north it ends in eastern Taiwan, the zone of active collision between the North Luzon Trough portion of the Luzon Volcanic Arc and South China. The Philippine Mobile Belt has also been c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calamian Islands
The Calamian Islands or the Calamianes is a group of islands in the province of Palawan, Philippines. It includes: * Busuanga Island * Coron Island * Culion Island * Calauit Island * Malcapuya Island * Banana Island * Pass Island * Calumbuyan Island * ''several minor islets'' History Historically, the Calamianes was site of the Spanish politico-militar ''Provincia de Calamianes''. It became the site of a Presidio or a Spanish military garrison, and the small group of islands received, almost 100 Spanish and Mexican soldier-colonists in the 1670s. The Spanish Empire later purchased mainland Paragua from the Sultan of Borneo. During the American occupation (1898-1948), the old ''Provincia de Calamianes'' was dissolved and jointly administered with the Island of Paragua as the new Province of Palawan. During the American occupation and up until recently, Culion Island was host to a leper colony. Busuanga Island hosts the largest town, Coron, in the Calamian Islands. Coron Island ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haian Range
The Coastal Mountain Range, also known as the Hai'an Range (), is a mountain range situated on the eastern coast of the island of Taiwan, and spans the border between Hualien and Taitung Counties. The Coastal Mountain Range is the northern portion of the Luzon Arc but do not present current volcanic activity. Its geology is mainly composed of a Miocene volcanic basement covered by a thick (ca.4-6km) sedimentary pile of deep to shallow marine clastic deposits mostly derived from the adjacent Central Range mountains to the west. The Huadong Valley, the result of the collision of two tectonic plates, is at the west end of the range, and the tallest peak of the range is Xingangshan (新港山), which stands tall. Currently those peaks are still rising with an annual speed of 3 mm. The Hai'an Range is also converging with Central Mountain Range with an average speed of 2.3 cm per year. There are several small basins located around the range, the largest of which is Taiyu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accretion (geology)
Accretion, in geology, is a process by which material is added to a tectonic plate at a subduction zone, frequently on the edge of existing continental landmasses. The added material may be sediment, volcanic arcs, seamounts, oceanic crust or other igneous features. Description Accretion involves the addition of material to a tectonic plate via subduction, the process by which one plate is forced under the other when two plates collide. The plate which is being forced down, the subducted plate, is pushed against the upper, over-riding plate. Sediment on the ocean floor of the subducting plate is often scraped off as the plate descends. This accumulated material is called an accretionary wedge (or accretionary prism), which is pushed against and attaches to the upper plate. In addition to accumulated ocean sediments, volcanic island arcs or seamounts present on the subducting plate may be amalgamated onto existing continental crust on the upper plate, increasing the cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra Madre (Philippines)
The Sierra Madre is the longest mountain range in the Philippines. Spanning over , it runs from the province of Cagayan down to the province of Quezon, forming a north–south direction on the eastern portion of Luzon, the largest island of the archipelago. It is bordered by the Pacific Ocean to the east, Cagayan Valley to the northwest, Central Luzon to the midwest, and Calabarzon to the southwest. Some communities east of the mountain range, along the coast, are less developed and so remote that they could only be accessed by taking a plane or a boat. The country's largest protected area, the Northern Sierra Madre Natural Park, is situated at the northern part of the range in the province of Isabela. The park is in the UNESCO tentative list for World Heritage List inscription. Environmentalists, scholars, and scientists have been urging the government to include the other parks within the Sierra Madre mountains for a UNESCO site that would encompass the entire mountain ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benham Plateau
The Benham Rise, officially known as Philippine Rise, is an extinct volcanic ridge located in the Philippine Sea approximately east of the northern coastline of Dinapigue, Isabela. The rise has been known to the people of Catanduanes as Kalipung-awan as early as the precolonial era of the Philippines, which literally means "loneliness from an isolated place". Under the Philippine Sea lie a number of basins including the West Philippine Basin, inside of which is located the Central Basin Fault (CBF). The Philippine Plateau is located in the CBF and its basement probably is a micro-continent. - Total pages: 440 Several scientific surveys have been made on the feature to study its nature and its impact on tectonic subduction, including one about its effects on the 1990 Luzon earthquake. The Philippines claimed this feature as part of its continental shelf in a claim filed with the United Nations Commission on the Limits of the Continental Shelf on April 8, 2009, and which was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Luzon Trench
The Philippine Trench (also Philippine Deep, Mindanao Trench, and Mindanao Deep) is a submarine trench to the east of the Philippines. The trench is located in the Philippine sea of the western North Pacific Ocean and continues NNW-SSE. It has a length of approximately and a width of about from the center of the Philippine island of Luzon trending southeast to the northern Maluku island of Halmahera in Indonesia. At its deepest point, the trench reaches 10,540 meters (34,580 ft or 5,760 fathoms). Immediately to the north of the Philippine Trench is the East Luzon Trench. They are separated, with their continuity interrupted and displaced, by Benham Plateau on the Philippine Sea Plate. Information The Philippine trench is hypothesized to be younger than 8–9 million years old. The central part of the Philippine fault formed during the Plio-Pleistocene times is considered to be an active depression of the Earth's crust. The trench formed from a coll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cotabato Trench
The Cotabato Trench is an oceanic trench in the Pacific Ocean, off the southwestern coast of Mindanao in the Philippines. Along this trench the oceanic crust of the Sunda Plate beneath the Celebes Sea is being subducted beneath the Philippines Mobile Belt. It forms part of a linked set of trenches along the western side of the Philippines formed over east-dipping subduction zones, including the Manila Trench and the Negros Trench. At its northern end the rate of convergence across this boundary is about 100 mm per year. It is a relatively young structure, forming during the late Miocene to Pliocene. This age is consistent with the estimated age of the sedimentary rocks in the accretionary wedge associated with the trench and the age of adakitic arc rocks on Mindanao thought to date the onset of subduction. Seismicity The trench is associated with large megathrust earthquakes, including the 1918 Celebes Sea earthquake (M 8.3), the 1976 Moro Gulf earthquake (M 8.0) and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Negros Trench
The Negros Trench is an oceanic trench located northeast of the Sulu Trench and west of Negros Island Region in Visayas, the trench is located in the Sunda Plate in the southwestern region of the Pacific Ocean. The depth of the Negros Trench is unknown, in contrast it's neighboring trench the Sulu Trench has a depth of 5,600. During the Early-Miocine, the Sunda Plate subducted below the Philippine Mobile Belt, which would later form the Negros Trench. Background The Negros trench was formed from subduction of the Eurasian Plate underneath the Philippine Sea plate which initiated during the Early Miocene The Early Miocene (also known as Lower Miocene) is a sub-epoch of the Miocene Epoch made up of two stages: the Aquitanian and Burdigalian stages. The sub-epoch lasted from 23.03 ± 0.05 Ma to 15.97 ± 0.05 Ma (million years ago). It was p ... (23.03-20.44 million years ago), The trench was previously the site of a collision zone with the Palawan plate, which forme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spratly Islands
The Spratly Islands ( fil, Kapuluan ng Kalayaan; zh, c=南沙群島/南沙群岛, s=, t=, p=Nánshā Qúndǎo; Malay, id, Kepulauan Spratly; vi, Quần đảo Trường Sa) are a disputed archipelago in the South China Sea. Composed of islands, islets, cays, and more than 100 reefs, sometimes grouped in submerged old atolls, the archipelago lies off the coasts of the Philippines, Malaysia, and southern Vietnam. Named after the 19th-century British whaling captain Richard Spratly who sighted Spratly Island in 1843, the islands contain less than of naturally occurring land area, which is spread over an area of more than . The Spratly Islands are one of the major archipelagos in the South China Sea which complicate governance and economics in this part of Southeast Asia due to their location in strategic shipping lanes. The islands are largely uninhabited, but offer rich fishing grounds and may contain significant oil and natural gas reserves,Owen, N. A. and C. H. Sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palawan Trench
Palawan (), officially the Province of Palawan ( cyo, Probinsya i'ang Palawan; tl, Lalawigan ng Palawan), is an archipelagic province of the Philippines that is located in the region of Mimaropa. It is the largest province in the country in terms of total area of . The capital city is Puerto Princesa. Palawan is known as the Philippines' ''Last Frontier'' and as the Philippines' ''Best Island''. The islands of Palawan stretch between Mindoro island in the northeast and Borneo in the southwest. It lies between the South China Sea and the Sulu Sea. The province is named after its largest island, Palawan Island (), measuring long, and wide."Palawan – the Philippines' Last Frontier" ''WowPhilippines''. Accessed August 27, 2008. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulu Trench
The Sulu Trench is an oceanic trench in the Pacific Ocean, located west of the islands of Mindanao and Sulu in the Philippines. The trench reaches a depth of about 5,600 metres (18,400 ft), in contrast with the average depth of the South China Sea of about 1,500 metres (4,900 ft). The trench formed when the Sunda Plate (part of the Eurasian Plate) subducts below the Philippine Mobile Belt. The convergent boundary terminates at the Negros Trench in the east. The Sulu Trench is not associated with frequent earthquakes, but hosts volcanoes south of the trench such as Mount Malindang. Background The Sulu Trench was formed from subduction of the Eurasian Plate underneath the Philippine sea plate which initiated during the Early Miocene (23.03-20.44 Million years ago), The trench was previously the site of a collision zone with the Palawan plate, which formed the Philippine Trench 8–9 million years ago, This trench is located southeast of the Visayan Islands, The rate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_NAMRIA_layout_2_May_24_2017.jpg "Click for more on -> Benham Plateau")
