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Didicas
Didicas Volcano is an active volcanic island in the province of Cagayan in northern Philippines. The island, which was a submarine volcano and re-emerged from the sea in 1952, is NE of Camiguin Island, one of the Babuyan Islands in Luzon Strait. Before 1952, the volcano first breached the ocean surface in 1857.Villamor, Ignacio. "Census of the Philippine Islands, 1918, Vol. I", p. 112. Manila Bureau of Printing, 1920. Physical features Didicas is topped with a lava dome with an elevation of and a base diameter of at sea level. It is at the southern end of the Luzon Volcanic Arc, and like all the volcanoes in the Philippines, is part of the Pacific ring of fire. Eruption history There have been six historical eruptions recorded from the volcano since the 18th century. *1773: The first recorded submarine eruption from the volcano, on what was known as Didicas reefs of the Farallones. *1856 September or October: The first activity started as a column of "smoke" in between the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Active Volcanoes In The Philippines
This is a list of active volcanoes in the Philippines, as categorized by the Philippine Institute of Volcanology and Seismology (PHIVOLCS). Volcanoes in the country have erupted within the last 600 years, with accounts of these eruptions documented by humans; or have erupted within the last 10,000 years (Holocene). As of 2018, PHIVOLCS has listed 24 volcanoes as Volcano#Active, active in the Philippines, 21 of which have had historical eruptions. The three exceptions are Cabalian, which is a strongly Fumarole, fumarolic volcano; Leonard Kniaseff, which was active 1,800 years ago (C14), and Mount Isarog, Isarog, which last erupted around 3500 BCE and 2374 BCE ± 87 based on radiocarbon dating There are 100 volcanoes in the Philippines listed by the Smithsonian Institution's Global Volcanism Program (GVP) at present, of which 20 are categorized as "historical" and 59 as "Holocene". The GVP lists volcanoes with historical, Holocene eruptions, or possibly older if strong signs of vo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Active Volcanoes Of The Philippines
This is a list of active volcanoes in the Philippines, as categorized by the Philippine Institute of Volcanology and Seismology (PHIVOLCS). Volcanoes in the country have erupted within the last 600 years, with accounts of these eruptions documented by humans; or have erupted within the last 10,000 years (Holocene). As of 2018, PHIVOLCS has listed 24 volcanoes as active in the Philippines, 21 of which have had historical eruptions. The three exceptions are Cabalian, which is a strongly fumarolic volcano; Leonard Kniaseff, which was active 1,800 years ago (C14), and Isarog, which last erupted around 3500 BCE and 2374 BCE ± 87 based on radiocarbon dating There are 100 volcanoes in the Philippines listed by the Smithsonian Institution's Global Volcanism Program (GVP) at present, of which 20 are categorized as "historical" and 59 as "Holocene". The GVP lists volcanoes with historical, Holocene eruptions, or possibly older if strong signs of volcanism are still evident through the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountains Of The Philippines
The following is a partial list of mountains in the Philippines. Several of these are List of volcanoes in the Philippines, volcanoes, formed by subduction, subducting tectonic plates surrounding the archipelago. List This list contains most of the highest mountains in the country. It is limited to mountain Summit (topography), peaks with, if known, an elevation of at least above sea level, and may include those considered as hills. The distinction between a hill and a mountain in terms of elevation is unclear and largely subjective, but a hill is universally considered to be less tall and less steep than a mountain. * ''Name'': mountains are sorted according to ''only name''s (without the "Mount" prefix) for easier reference in name and spelling variants. Unnamed peaks are ''italicized''. ''(note: to minimize clutter, citations for names are limited only to mountains with Variant name (geography), variant names, spellings, and/or those that currently do not have elevation da ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luzon Volcanic Arc
The Luzon Volcanic Arc is a chain of volcanoes in a north–south line across the Luzon Strait from Taiwan to Luzon. The name "Luzon Volcanic Arc" was first proposed by Carl Bowin et al. to describe a series of Miocene to recent volcanoes due to eastward subduction along the Manila Trench for approximately 1,200 km from the Coastal Range in Taiwan south to southern Mindoro in the Philippines. Islands that form part of the arc are the Eastern Coastal Range of Taiwan, Green Island, Taiwan, Orchid Island, Kaotai Rock, Mavudis or Y'ami Island, Mabudis, Siayan Island, Itbayat Island, Diogo Island, Batan Island, Unnamed volcano Ibuhos, Sabtang Island, Babuyan, Didicas, Camiguin Island. At the south end it terminates on Luzon. The geochemistry of a number of volcanoes along the arc have been measured. There are five distinct geochemical domains within the arc (Mindoro, Bataan, Northern Luzon, Babuyan, and Taiwan). The geochemistry of the segments verified that the volcanoes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lava Dome
In volcanology, a lava dome is a circular mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano. Dome-building eruptions are common, particularly in convergent plate boundary settings. Around 6% of eruptions on Earth are lava dome forming. The geochemistry of lava domes can vary from basalt (e.g. Semeru, 1946) to rhyolite (e.g. Chaiten, 2010) although the majority are of intermediate composition (such as Santiaguito, dacite-andesite, present day) The characteristic dome shape is attributed to high viscosity that prevents the lava from flowing very far. This high viscosity can be obtained in two ways: by high levels of silica in the magma, or by degassing of fluid magma. Since viscous basaltic and andesitic domes weather fast and easily break apart by further input of fluid lava, most of the preserved domes have high silica content and consist of rhyolite or dacite. Existence of lava domes has been suggested for some domed structures on the Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanoes Of The Luzon Strait
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates whereas the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates. Volcanoes can also form where there is stretching and thinning of the crust's plates, such as in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande rift in North America. Volcanism away from plate boundaries has been postulated to arise from upwelling diapirs from the core–mantle boundary, deep in the Earth. This results in hotspot volcanism, of which the Hawaiian hotspot is an example. Volcanoes are usually not created where two tectonic plates slide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subduction Volcanoes
Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the heavier plate dives beneath the second plate 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 the average rate of convergence being approximately two to eight centimeters per year along most plate boundaries. Subduction is possible because the cold oceanic lithosphere is slightly denser than the underlying asthenosphere, the hot, ductile layer in the upper mantle underlying the cold, rigid lithosphere. Once initiated, stable subduction is driven mostly by the negative buoyancy of the de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratovolcanoes Of The Philippines
A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and periodic intervals of explosive eruptions and effusive eruptions, although some have collapsed summit craters called calderas. The lava flowing from stratovolcanoes typically cools and hardens before spreading far, due to high viscosity. The magma forming this lava is often felsic, having high-to-intermediate levels of silica (as in rhyolite, dacite, or andesite), with lesser amounts of less-viscous mafic magma. Extensive felsic lava flows are uncommon, but have travelled as far as . Stratovolcanoes are sometimes called composite volcanoes because of their composite stratified structure, built up from sequential outpourings of erupted materials. They are among the most common types of volcanoes, in contrast to the less common shield volcan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Inactive Volcanoes In The Philippines
This is a list of inactive volcanoes in the Philippines. Volcanoes with no record of eruptions are considered as extinct or inactive. Their physical form since their last activity has been altered by agents of weathering and erosion with the formation of deep and long gullies. Philippines Institute of Volcanology and Seismology. Retrieved on November 5, 2013. Inactive does not necessarily indicate the volcano will not erupt again. had no recorded historical eruption before its cataclysmic 1991 eruption [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Potentially Active Volcanoes In The Philippines
This is a list of potentially active volcanoes in the Philippines, as classified by the Philippine Institute of Volcanology and Seismology. List See also * List of active volcanoes in the Philippines * List of inactive volcanoes in the Philippines * List of mountains in the Philippines References Philippine Institute of Volcanology and Seismology (PHIVOLCS) Potentially Active Volcano list Philippine Institute of Volcanology and Seismology (PHIVOLCS) Active Volcano list Philippine Institute of Volcanology and Seismology (PHIVOLCS) Inactive Volcano list External links * {{Volcanoes of the Philippines Volcanoes A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are ... Philippines, potentially active *potentially Volcanism of the Philippines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Ring Of Fire
The Ring of Fire (also known as the Pacific Ring of Fire, the Rim of Fire, the Girdle of Fire or the Circum-Pacific belt) is a region around much of the rim of the Pacific Ocean where many Types of volcanic eruptions, volcanic eruptions and earthquakes occur. The Ring of Fire is a Horseshoe, horseshoe-shaped belt about long and up to about wide. The Ring of Fire includes the Pacific coasts of South America, North America and Kamchatka, and some islands in the western Pacific Ocean. Although there is consensus among geologists about almost all areas which are included in the Ring of Fire, they disagree about the inclusion or exclusion of a few areas, for example, the Antarctic Peninsula and western Indonesia. The Ring of Fire is a direct result of plate tectonics: specifically the movement, collision and destruction of lithosphere, lithospheric plates (e.g. the Pacific Plate) under and around the Pacific Ocean. The collisions have created a nearly continuous series of subdu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Volcano
Submarine volcanoes are underwater vents or fissures in the Earth's surface from which magma can erupt. Many submarine volcanoes are located near areas of tectonic plate formation, known as mid-ocean ridges. The volcanoes at mid-ocean ridges alone are estimated to account for 75% of the magma output on Earth.Martin R. Speight, Peter A. Henderson, "Marine Ecology: Concepts and Applications", John Wiley & Sons, 2013. . Although most submarine volcanoes are located in the depths of seas and oceans, some also exist in shallow water, and these can discharge material into the atmosphere during an eruption. The total number of submarine volcanoes is estimated to be over 1 million (most are now extinct) of which some 75,000 rise more than 1 km above the seabed. Only 119 submarine volcanoes in Earth's oceans and seas are known to have erupted during the last 11,700 years. Hydrothermal vents, sites of abundant biological activity, are commonly found near submarine volcanoes. Effe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
