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Biliran (volcano)
Mount Biliran is a solfataric active complex volcano located in the island province of Biliran in the Philippines. The volcano caused the formation of the island. Geological features *Rock Type: Hornblende andesite containing greenish and black hornblende *Tectonic Setting: Biliran Volcano is part of the curvilinear belt of Quaternary volcanoes in eastern Philippines, parallel to Phil. Trench to the east Volcanic activity *Number of Historical Eruptions: 1 *Latest Eruption/Activity: September 26, 1939 *Site: crater *Eruption Character: Debris avalanche *Affected Areas/Remarks: Ashfall at Caibiran and adjoining areas (6.35 cm thick deposits) *Monitoring activity: Short-term monitoring in 1954 Physical features *Hotsprings: *#Central Biliran – Libtong Thermal Areas (12 hot springs and one bubbling pool) *#North Biliran – Panamao Thermal Area *#Anas Thermal Area *#South Biliran – Kalambis Thermal Area *Adjacent Volcanic Edifice: *#Panamao (107 m asl) *#Guman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biliran
Biliran, officially the Province of Biliran ( Waray-Waray: ''Probinsya han Biliran''; ceb, Lalawigan sa Biliran; tl, Lalawigan ng Biliran), is an island province in the Philippines located in the Eastern Visayas region (Region VIII). Biliran is one of the country's smallest and newest provinces. Formerly a sub-province of Leyte, it became an independent province in 1992. Biliran lies less than a kilometer north of the island of Leyte. A bridge-causeway fixed link over Poro Island in the gateway town of Biliran connects the province to Leyte. Its capital is the municipality of Naval on the western coast of the island. History Etymology During the early Spanish era, what is now called Biliran was known as ''Isla de Panamao''. The present name, believed to be adopted sometime between the late 17th century and the early 18th century, was, according to many publications, derived from a native grass called ''borobiliran'' which once grew abundantly on the island's plains. A contend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philippine Institute Of Volcanology And Seismology
The Philippine Institute of Volcanology and Seismology (PHIVOLCS, ; tl, Surian ng Pilipinas sa Bulkanolohiya at Sismolohiya) is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes, and tsunamis, as well as other specialized information and services primarily for the protection of life and property and in support of economic, productivity, and sustainable development. It is one of the service agencies of the Department of Science and Technology. PHIVOLCS monitors volcano, earthquake, and tsunami activity, and issues warnings as necessary. It is mandated to mitigate disasters that may arise from such volcanic eruptions, earthquakes, tsunamis, and other related geotectonic phenomena. History This government organization was formed after a historical merging of official functions of government institutions. One of its first predecessors is the Philippine Weather Bureau created in 1901 when meteorological, seismological a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Visayas
Eastern Visayas ( war, Sinirangan Kabisay-an; ceb, Sidlakang Kabisay-an; tl, Silangang Kabisayaan or ''Silangang Visayas'') is an administrative region in the Philippines, designated as Region VIII. It consists of three main islands, Samar, Leyte and Biliran. The region has six provinces, one independent city and one highly urbanized city namely, Biliran, Leyte, Northern Samar, Samar, Eastern Samar, Southern Leyte, Ormoc and Tacloban. The highly urbanized city of Tacloban is the sole regional center. These provinces and cities occupy the easternmost islands of the Visayas group of islands. Eastern Visayas faces the Philippine Sea to the east. The region's most famous landmark is the San Juanico Bridge, which links the provinces of Samar and Leyte. As of 2020, the Eastern Visayas region has a population of 4,547,150 inhabitants, making it the third most populous region in the Visayas. Etymology The current name of the region was derived from its location in the easternmost p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Visayas
The Visayas ( ), or the Visayan Islands (Bisayan languages, Visayan: ''Kabisay-an'', ; tl, Kabisayaan ), are one of the three Island groups of the Philippines, principal geographical divisions of the Philippines, along with Luzon and Mindanao. Located in the central part of the archipelago, it consists of several islands, primarily surrounding the Visayan Sea, although the Visayas are also considered the northeast extremity of the entire Sulu Sea. Its inhabitants are predominantly the Visayan peoples. The major islands of the Visayas are Panay, Negros (Philippines), Negros, Cebu Island, Cebu, Bohol Island, Bohol, Leyte and Samar. The region may also include the provinces of Palawan, Romblon, and Masbate whose populations identify as Visayan and whose languages are more closely related to other Visayan languages than to the major languages of Luzon. There are three administrative Regions of the Philippines, regions in the Visayas: Western Visayas (pop. 7.9 million), Central V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philippines
The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republika sang Filipinas * ibg, Republika nat Filipinas * ilo, Republika ti Filipinas * ivv, Republika nu Filipinas * pam, Republika ning Filipinas * krj, Republika kang Pilipinas * mdh, Republika nu Pilipinas * mrw, Republika a Pilipinas * pag, Republika na Filipinas * xsb, Republika nin Pilipinas * sgd, Republika nan Pilipinas * tgl, Republika ng Pilipinas * tsg, Republika sin Pilipinas * war, Republika han Pilipinas * yka, Republika si Pilipinas In the recognized optional languages of the Philippines: * es, República de las Filipinas * ar, جمهورية الفلبين, Jumhūriyyat al-Filibbīn is an archipelagic country in Southeast Asia. It is situated in the western Pacific Ocean and consists of around 7,641 islands t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Complex Volcano
A complex volcano, also called a compound volcano or a volcanic complex, is a mixed landform consisting of related volcanic centers and their associated lava flows and pyroclastic rock. They may form due to changes in eruptive habit or in the location of the principal vent area on a particular volcano. Stratovolcanoes can also form a large caldera that gets filled in by a lava dome, or else multiple small cinder cones, lava domes and craters may develop on the caldera's rim. Although a comparatively unusual type of volcano, they are widespread in the world and in geologic history. Metamorphosed ash flow tuffs are widespread in the Precambrian rocks of northern New Mexico, which indicates that caldera complexes have been important for much of Earth's history. Yellowstone National Park is on three partly covered caldera complexes. The Long Valley Caldera in eastern California is also a complex volcano; the San Juan Mountains in southwestern Colorado are formed on a group of N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quaternary
The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million years ago to the present. The Quaternary Period is divided into two epochs: the Pleistocene (2.58 million years ago to 11.7 thousand years ago) and the Holocene (11.7 thousand years ago to today, although a third epoch, the Anthropocene, has been proposed but is not yet officially recognised by the ICS). The Quaternary Period is typically defined by the cyclic growth and decay of continental ice sheets related to the Milankovitch cycles and the associated climate and environmental changes that they caused. Research history In 1759 Giovanni Arduino proposed that the geological strata of northern Italy could be divided into four successive formations or "orders" ( it, quattro ordini). The term "quaternary" was introduced by Jules Desnoye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solfataric
A fumarole (or fumerole) is a vent in the surface of the Earth or other rocky planet from which hot volcanic gases and vapors are emitted, without any accompanying liquids or solids. Fumaroles are characteristic of the late stages of volcanic activity, but fumarole activity can also precede a volcanic eruption and has been used for eruption prediction. Most fumaroles die down within a few days or weeks of the end of an eruption, but a few are persistent, lasting for decades or longer. An area containing fumaroles is known as a fumarole field. The predominant vapor emitted by fumaroles is steam, formed by the circulation of groundwater through heated rock. This is typically accompanied by volcanic gases given off by magma cooling deep below the surface. These volcanic gases include sulfur compounds, such as various sulfur oxides and hydrogen sulfide, and sometimes hydrogen chloride, hydrogen fluoride, and other gases. A fumarole that emits significant sulfur compounds is some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Complex Volcano
A complex volcano, also called a compound volcano or a volcanic complex, is a mixed landform consisting of related volcanic centers and their associated lava flows and pyroclastic rock. They may form due to changes in eruptive habit or in the location of the principal vent area on a particular volcano. Stratovolcanoes can also form a large caldera that gets filled in by a lava dome, or else multiple small cinder cones, lava domes and craters may develop on the caldera's rim. Although a comparatively unusual type of volcano, they are widespread in the world and in geologic history. Metamorphosed ash flow tuffs are widespread in the Precambrian rocks of northern New Mexico, which indicates that caldera complexes have been important for much of Earth's history. Yellowstone National Park is on three partly covered caldera complexes. The Long Valley Caldera in eastern California is also a complex volcano; the San Juan Mountains in southwestern Colorado are formed on a group of N ... [...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] |
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] |
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