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East Luzon Trough
The East Luzon Trough (also known as the East Luzon Trench) is an oceanic trench north of the Philippine Trench and east of the island of Luzon. The trench is located near the Philippine orogeny and located in the southeastern region of the Philippine Sea Plate. The depth of the trough is 5,700 meters. The East Luzon Trough formed during the Eocene and Oligocene epoch, 40–24 million years ago. Immediately to the South of the East Luzon Trough is the Philippine Trench. They are separated, with their continuity interrupted and displaced, by Benham Plateau on the Philippine Sea Plate. Geology The East Luzon Trough was formed due to the subduction of the Philippine Sea Plate beneath the island of Luzon. The trench was active during the Oligocene. The Sierra Madre Basin and Isabella Ridge may represent the trench, forearc basin, and subduction complex. The rate of subduction on the Philippine Sea Plate is estimated to be around 2–3 cm per year. A transfer zone border ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Philippine Sea And Philippine Sea 西菲律賓海與菲律賓海
West is one of the four cardinal directions or points of the compass. It is the opposite direction from east and is the direction in which the Sun sets on the Earth. Etymology The word "west" is a Germanic word passed into some Romance languages (''ouest'' in French, ''oest'' in Catalan, ''ovest'' in Italian, ''vest'' in Romanian, ''oeste'' in Spanish and Portuguese). As in other languages, the word formation stems from the fact that west is the direction of the setting sun in the evening: 'west' derives from the Indo-European root ''*wes'' reduced from ''*wes-pero'' 'evening, night', cognate with Ancient Greek ἕσπερος hesperos 'evening; evening star; western' and Latin vesper 'evening; west'. Examples of the same formation in other languages include Latin occidens 'west' from occidō 'to go down, to set' and Hebrew מַעֲרָב (maarav) 'west' from עֶרֶב (erev) 'evening'. West is sometimes abbreviated as W. Navigation To go west using a compass for navigati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transfer Zone
A transfer zone in geology is an area where deformational strain is transferred from one structural element to another typically from fault to fault in rift systems. Therefore, listric faults and monoclinal folds in the hanging wall are typical structures linked by transfer zones; however, complexities do exist. The terms interbasin and intrabasin transfer zones have been proposed to delineate the magnitude of the transfer zone. Transfer zones can be described according to the fault dip directions; synthetic or conjugate and according to their deformation style; convergent or divergent. Transfer zones can be farther identified by its maturity or (fault propagation evolution); whether the major fault relationship is approaching, overlapping, collateral or collinear. Since transfer zones are normally found in extensional settings many studies have been done within the East African Rift system and the Gulf of Suez rift system. Transfer zones have also played a role in hydrocarb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baler, Aurora
Baler (, , , ; ), officially the Municipality of Baler (; ), is a municipality and capital of the province of Aurora, Philippines. According to the 2020 census, it has a population of 43,785 people. History Spanish colonial period In 1609, seven Franciscan missionaries led by Fray Blas Palomino founded the settlement of Baler. It was later converted into a ''pueblo'' (town) by the Augustinians and the Recollects in 1658. Due to the scarcity of religious missionaries, the Franciscans again took over the administration of the settlement in 1703. On December 27, 1735, a great storm struck the town and a huge wave called ''tromba marina'' devastated the old town settlement then located in Barrio Sabang. Among the survivors were the Angaras, Bijasas, Bitongs, Lumasacs, Carrascos, and Pobletes who swam towards the nearby Ermita Hill. A new community sprang into what is now the Poblacion of Baler, leaving "Kinagunasan," the place of devastation. A mural depicting this wave can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jones, Isabela
Jones, officially the Municipality of Jones (; ), is a municipality in the province of Isabela, Philippines. According to the 2020 census, it has a population of 45,628 people. Etymology The town derived its named in honor of William Atkinson Jones, an American legislator who authored the Philippine Autonomy Act of 1916. The town was inaugurated on January 1, 1921. It was initially divided into 21 barrios with virgin forests and wide fertile plains, with Cabanuangan serving as the Municipal Government's seat. History The southern portion of Echague separated by the Cagayan River was created into a municipality named Jones in honor of an American Legislator, William Atkinson Jones, who authored the Philippine Autonomy Act of 1916, and was inaugurated on January 1, 1921. It was originally composed of 21 barrios of virgin forests and wide fertile plains with Cabanuangan as the seat of the municipal government. The house of one Tirso Mateo served as the first town hall, with the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1968 Casiguran Earthquake
The 1968 Casiguran earthquake occurred on with a moment magnitude of 7.6 and a maximum Mercalli intensity of IX (''Violent''). The thrust earthquake's epicenter was in Casiguran, Quezon (now part of Aurora province). A small non-destructive tsunami was generated and at least 207 people were killed. The majority of the deaths occurred in the collapse of a six-story building in Manila. Damage In Manila, many structures that suffered severe damage had been built near the mouth of the Pasig River on huge alluvial deposits. A number of buildings were damaged beyond repair while others only suffered cosmetic damage. 268 people were reported to have died during the collapse of the six-story Ruby Tower, located at the corner of Doroteo Jose and Teodora Alonzo Streets in the district of Santa Cruz. The entire building, save for a portion of the first and second floors at its northern end, was destroyed. Allegations of poor design and construction, as well as the use of poor-quality ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Real, Quezon
Real, officially the Municipality of Real (), is a municipality in the province of Quezon, Philippines. According to the 2020 census, it has a population of 38,678 people. This coastal town, located on the eastern shores of Luzon facing the Philippine Sea, is noted for its rural beach resorts. Etymology The origin of the name Real has no traditional folklore as basis. Its name originated from the arrival of Spanish forces in the place during their regime. They incorporated the area into their territory, naming it “Puerto Real” (), where the name of the municipality was derived. Spanish galleons and ships docked at the port, while reinforced forces were stationed at the nearby Binangonan Del Ampon (now Infanta). History Spanish forces landed at the site of Real early in the colonization period, calling it "San Rafael". Spanish galleons and ships docked at the port "Puerto Real De Lampon" reinforced forces stationed at the nearby place "Binangonan De Lampon" or "Binangonan D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquake
An earthquakealso called a quake, tremor, or tembloris the shaking of the Earth's surface resulting from a sudden release of energy in the lithosphere that creates seismic waves. Earthquakes can range in intensity, from those so weak they cannot be felt, to those violent enough to propel objects and people into the air, damage critical infrastructure, and wreak destruction across entire cities. The seismic activity of an area is the frequency, type, and size of earthquakes experienced over a particular time. The seismicity at a particular location in the Earth is the average rate of seismic energy release per unit volume. In its most general sense, the word ''earthquake'' is used to describe any seismic event that generates seismic waves. Earthquakes can occur naturally or be induced by human activities, such as mining, fracking, and nuclear weapons testing. The initial point of rupture is called the hypocenter or focus, while the ground level directly above it is the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The agency also makes maps of planets and moons, based on data from U.S. space probes. The sole scientific agency of the U.S. Department of the Interior, USGS is a fact-finding research organization with no regulatory responsibility. It is headquartered in Reston, Virginia, with major offices near Lakewood, Colorado; at the Denver Federal Center; and in NASA Research Park in California. In 2009, it employed about 8,670 people. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on its hundredth anniversary, was "Earth Science in the Pub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subduction
Subduction is a geological process in which the oceanic lithosphere and some continental lithosphere is recycled into the Earth's mantle at the convergent boundaries between tectonic plates. Where one tectonic plate converges with a second plate, the heavier plate dives beneath the other and sinks into the mantle. A region where this process occurs is known as a subduction zone, and its surface expression is known as an arc-trench complex. The process of subduction has created most of the Earth's continental crust. Rates of subduction are typically measured in centimeters per year, with rates of convergence as high as 11 cm/year. Subduction is possible because the cold and rigid oceanic lithosphere is slightly denser than the underlying asthenosphere, the hot, ductile layer in the upper mantle. Once initiated, stable subduction is driven mostly by the negative buoyancy of the dense subducting lithosphere. The down-going slab sinks into the mantle largely under its own ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philippine Trench
The Philippine Trench (also called the Philippine Deep, Mindanao Trench, and the Mindanao Deep) is a Oceanic trench, 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 Islands, 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. Geology 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isabela (province)
Isabela, officially the Province of Isabela (; ; ), is the second largest provinces of the Philippines, province in the Philippines by land area located in the Cagayan Valley. Its capital and the largest local government unit is the city of Ilagan. It is bordered by the provinces of Cagayan to the north, Kalinga (province), Kalinga to the northwest, Mountain Province to the central-west, Ifugao and Nueva Vizcaya to the southwest, Quirino, Aurora (province), Aurora and the independent city of Santiago, Isabela, Santiago to the south, and the Philippine Sea to the east. This primarily agricultural province is the rice and Maize, corn granary of Luzon with its mix of plains and rolling terrain. In 2012, the province was declared as the country's top producer of corn with 1,209,524 metric tons. Isabela was also declared the second-largest rice producer in the Philippines and the "Queen Province of the North". The province has four trade centers in the cities of Ilagan, Isabela, Il ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
