Batur is the most active volcano on the popular tourist island of Bali and one of Inondesia's more active ones. During the past centuries, Batur has had a number of small eruptions every few years. Thanks to the scenic beauty of the caldera with its lake and the cone of Batur, it is one of Bali's most popular destinations. -> Voir la description complète
Bayonnaise Rocks volcano (ベヨネース列岩 Beyonēsu-retsugan) is an active submarine volcano in the Izu Islands ca. 400 km south of Tokyo. The volcano has a large 8-9 km wide caldera whose highest point forms a few rocks rising just above sea level. The volcano is known for its submarine eruptions which sometimes produce temporary islands.
Most of its frequent eruptions have occurred at Myojin-sho, a large young lava dome on the NE rim of the caldera. In 1952, an explosive eruption at Myojin-sho destroyed a Japanese research vessel, killing all 31 people on board.
There is only sparse vegetation on the Bayonnaise Rocks, but the islands are an important resting place for migratory birds. Located in the Kuroshio Current, the waters around have abundant sea life and are popular with sports fishermen. -> Voir la description complète
Bazman volcano is a stratovolcano in SE Iran, 180 km SSW of the city of Zahedan. The volcano has a well-preserved 500 m wide summit crater with minor fumaroles, which suggest it could be still active. -> Voir la description complète
The compound Belerang-Beriti volcano rises above the Semalako Plain in SW Sumatra, forming a NW-SE-trending massif that contains a 1.2-km-wide crater breached to the NE. -> Voir la description complète
Belknap Crater volcano is located near McKenzie Pass, north of the Three Sisters volcanoes in Central Oregon. It is the center and source of one of the largest number of geologically recent eruptions in the Cascade Range. It was very active between about 3000 and 1500 years ago.
The McKenzie highway 242 crosses the barren lava fields on the SE flank and offers with spectacular views toward Mt. Jefferson and the Three Sisters volcanoes. -> Voir la description complète
La bentonite est une argile généralement impurs aluminium absorbant phyllosilicates composé principalement de montmorillonite. -> Voir la description complète
Berutarube is an andesitic-to-dacitic stratovolcano on the SW tip of Iturup Island (Kuriles). It has gentle slopes which are deeply eroded by glacial valleys. Funaroles and sufur deposits occur in the inner walls of the central crater. -> Voir la description complète
Bezymianny ("unnamed") was considered extinct until it erupted violently in 1955-56, after a slumber of probably 1000 years. It is one of the most active volcanoes in Kamchatka. The eruption followed a massive flank failure (similar to Mt. St. Helens eruption in 1980) which removed a 0.5 sq km sector of the volcano. -> Voir la description complète
Bibinoi volcano (Bukit Bibinoi, Bibinoi Hill) on the SE tip of Bacan Island is the largest and SE most of 3 volcanoes on the island, located off the south coast of Halmahera Island, Indonesia. Two other, smaller volcanic centres are Songsu and Lansa.
Binibnoi is separated from the Amasing volcanic complex to the NW by the metamorphic (i.e. non volcanic) Sibela Mountain range.
Biliran volcano comprises the whole 20x35 km Island of Biliran which is formed by a group of lava domes. It is located across the narrow Biliran Strait from the northern tip of Leyte Island.
Biliran volcano is at the northern end of a 170 km long volcanic chain extending SSE to Panaon Island.
The only known historic activity took place on 26 September 1939 and consisted of a phreatic explosion accompanied possibly by a debris avalanche. Ash fell in Caibiran town 12 km to the E.
There are many fumarole fields, hot springs, mud pools and thermal areas on Biliran.
Billy Mitchell volcano is a small shield volcano, which is composed mainly of loose deposits from explosive eruptions (pyroclastic shield). The volcano is located immediately NE of Bagana volcano in central Bougainville Island.
Billy Mitchell's typical eruption style are explosive eruptions from the central vent, and the volcano is remarkable for having produced some of the largest explosive eruptions in Papua New Guinea in the past 10,000 years. -> Voir la description complète
Binuluan volcano belongs to the Ambalatungan volcanic group and is located in the Kalinga Province, Luzon Island, Philippines.
A possible steam eruption of Binuluan volcano in 1952 killed 12 people by a sulphur rich debris flow.
Bir Borhut volcano is an active, but almost unknown volcano in eastern Yemen near the Gulf of Aden. Old documents tell of volcanic activity in the 10th century, and it was reported to have still been "smoking" in 1813. -> Voir la description complète
The Black Rock Desert volcanic field of a group of small volcanic fields in south central Utah, at the eastern margin of the Great Basin. It is the youngest volcanic area in Utah and contains both Utah's youngest known rhyolite dome (0.4 million years old) and its youngest lava flows, the roughly 660-year-old Ice Springs lava flows, located at Ice Springs, 15 km west of Meadow. These lava flows extend 4 km north and west from Black Rock Station. -> Voir la description complète
Blocs volcaniques sont des fragments de roche solidifiée plus de 64 mm de diamètre. Blocs communément sont éjectés durant les éruptions explosives et comprennent des pièces plus âgés de l'édifice du volcan, p. ex. les flux de pièces de conduites, de dômes de lave ou de lave âgé. -> Voir la description complète
Blue Lake is a series of at least 3 overlapping explosion craters (maars), located along a NE trend slightly east of the crest of the Cascade Range. The best-known crater, Blue Lake Crater contains a blue lake (800m x 300m) and is probably the youngest. It formed by an eruption about 1300 years ago. It lies immediately west of the popular recreation area of Suttle Lake. -> Voir la description complète
BLUP Blup volcan forme le petit, boisé de 3,5 km large Blup Blup Island env. 30 km au large du Cap Girgir sur le littoral de Sepik oriental de Nouvelle-Guinée. La ville la plus proche est Karau. Le volcan andésitique dacitique contient un cratère sommet de 800 m de diamètre rempli par l'épaisse forêt tropicale et éventuellement un dôme de lave sur une crête s'étendant à l'Ouest. Les coulées de lave avec des fronts de débit bien développées sont visibles sur ses flancs. Un cône petit flanc est situé sur la côte sud-ouest. La plupart des activités ont eu lieu depuis le cratère du sommet, mais l'âge de la dernière éruption est inconnue, mais il y a probablement moins de 10 000 ans.
Bocca Nuova (= la nouvelle bouche) est le cratère sommet plus à l'ouest du volcan Etna. Il s'est formé en 1968 comme un cratère de petite fosse sur le cône de cratère du sommet. Il augmente progressivement en taille et en profondeur au cours des années. La dernière éruption majeure de la Bocca Nuova s'est produite en 1999, quand la lave rempli le cratère et overspilled sur le flanc ouest du Mont Etna.
Bogatyr Ridge is a stratovolcano on SW Iturup Island, Kuriles, Russia. It consists of a chain of craters and cones and the larger Stokap volcano, astratovolcano aligned NE-SW.
The andesitic Stokap volcano has 8-10 cones and explosion craters. The largest of these contains a lake. Lava flows from Stokap volcano have reached the sea on both sides, the Pacific Ocean and the Sea of Okhotsk. There are no known historic eruptions, but the volcano has been active during the Holocene.
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Source: GVP Bogatyr Ridge information
Boisa volcano forms a tiny island offshore from Bogia on the Madang coast. There are no known historical eruptions from Boisa volcano.
It is located only 10 km NW of Manam volcano, and it is a possible that Boisa belongs to the same volcanic edifice and is supplied by the same magma chamber,- in other words, really is a side vent of Manam rather than a separate volcano. -> Voir la description complète
Bola volcano (or Mt. Wangore) is a symmetrical steep stratovolcano that forms the highest point on the Willaumez Peninsula in New Britain.
There are no known recent eruptions, but the fresh morphology of the summit crater suggests that the last activity was only a few hundred years ago. -> Voir la description complète
Bombalai volcano in north east Borneo is the only volcano considered still possibly active of Malaysia, although its last eruptions might have been thousands of years ago.
It is located close to the border with Indonesia, in the Malaysian province of Sabah, across Cowie Harbor from the the Indonesian province of Kalimantan.
Bombalai cinder cone is part of a large volcanic field on the Semporna Peninsula in the NE of Borneo. Bombalai has a 300 m wide crater breached to the south and 2 young lava flows extending almost to the coast.
Fragments éjectés de magma « frais » supérieur à 64 mm de diamètre, souvent ayant une forme aérodynamique acquise lors de leurs parcours aérien. -> Voir la description complète
Bombe volcanique avec une surface craquelée similaire à celle de la croûte de pain, causée par la lente expansion des bulles de gaz volcanique contenue dans la lave, à l'intérieur durant le refroidissement. -> Voir la description complète
Mount Bosavi is an extinct volcano in a remote part of the Highlands of Papua New Guinea. Mount Bosavi is actually the collapsed cone of an extinct volcano on the Great Papuan Plateau, part of the Kikori River basin. Its caldera is approximately 4 km wide and 1 km deep. Bosavi is home to a number of unique species.
The volcano is partly located in the Sulamesi Wildlife Management Area, which was declared in 2006. The mountain with its deep crater are so inaccessible that even the few local people in the Kasua tribe who live in nearby villages rarely visit the area. -> Voir la description complète
Bratan is a large caldera of unknown age in north-central Bali, Indonesia. It measures 11 x 6 km and contains 3 lakes - Danau Tamblimgam, Danau Buyan, and Danau Bratan. The area is know of its scenic beauty and hot springs. -> Voir la description complète
The Bridge River Cones are a field of small basaltic cinder cones in SW British Columbia, Canda. The youngest activity from this volcanic area could be less than 1500 years old. -> Voir la description complète
Broken Top in the Three Sisters Wilderness, Oregon, is, as the name suggests, the heavily eroded top of a probably extinct stratovolcano. -> Voir la description complète
Le volcan Mont Bromo en Java est est le cône actif à l'intérieur de la caldeira Tengger géant, une destination d'endroits plus pittoresque d'Indonésie dans l'est de Java, célèbre pour ses vues de lever de soleil magnifique et le panorama sur la caldeira avec Semeru volcan en arrière-plan. -> Voir la description complète
Brushy Butte est un petit volcan bouclier peu étudié immédiatement à l'est du cratère maar à colombages, et au sud-sud-est des Highlands lac Medicine en Californie du Nord, Etats-Unis.
Bukit Lumut Balai is a heavily eroded volcano consisting of three eruption centers, two on Bukit Lumut and one on the NE side of Bukit Balai, 5 km to the east. Large lava flows occur on the north side of Bukit Balai. -> Voir la description complète
Bulusan, l'un des volcans plus actifs dans les Philippines, est le volcan plus au sud de Luçon. Elle se trouve à l'extrémité sud-est de l'arc volcanique de Bicol, occupant la péninsule du même nom qui forme l'extrémité SE allongée de l'île de Luçon. -> Voir la description complète
Buru volcano is a partly preserved cinder cone which rises 250 m above the surrounding swamps. it is located SW of Pago and SE of Oto.
The volcano is named after the Buru river on the south side of the volcano. To the north is a swampy depression called the Buru caldera. -> Voir la description complète
Mount Cabalían volcano is located on the SE tip of Leyte Island, Philippines. It is is an andesitic stratovolcano with steep radial erosion valleys and ridges that are moderately to thickly vegetated.
It contains a summit crater filled by a lake. The crater rim is irregular and forms 2 peaks on the S side. A recent pyroclastic flow deposit was radiocarbon dated to be only about 150 years old. Hot springs with temperatures of up to 64 deg C are found on the east and west flanks of Cabalían.
Caburgua-Huelemolle volcano is a group of 4 cinder basaltic cones in central Chile: Volcanoes de Caburgua and Volcán Huelemolle, Volcán Redondo and Volcán Pichares. -> Voir la description complète
Cagua is an active stratovolcano at the NE tip of northern Luzon Island, Philippines. It has a circular summit crater of 1.5 km diameter, with steep, 60-m-high walls, and is locally known as the "Fire Mountain". The volcano might have erupted in 1907, when strong fumarole activity was noted. A phreatic explosion in 1860 may have generated pyroclastic flows.
At present, there are thermal areas near the summit crater and on the NW and NNE flanks. -> Voir la description complète
Caichinque volcano is a relatively small volcanic complex in northern Chile. It devides Salar Capur from Salar Talar. There are more than 6 vents that have erupted andesitic-to-dacitic lava flows. The youngest of these are found on the NE and SE sides of the Cainque stratovolcano, including one that traveled 6 km to the east and formed 2 lobes into the Salar Talar. The age of the flows is unknown and estimated between pre-historical times and Pleistocene.
Calabozos volcano in central Chile is a complex containing a large 26x14 km wide caldera, Cerro del Medio volcano at the south of the caldera, and 4 cinder cones of Descabezado Chico on the western caldera rim.
The caldera was formed by repeated massive (super-volcano) eruptions 800,000, 300,000 and 150,000 years ago, each of which deposited hundreds of cubic kilometer of ash flows. -> Voir la description complète
Volcan Calbuco, avec son voisin, Osorno, est l'un des volcans les plus actifs du Chili. Il est situé à 11 km au sud du lac Llanquihuand NE 30 km de la ville de Puerto Mont, dans le district du Lac dans le sud du Chili. Volcan Calbuco se compose principalement de blocs de coulées de lave aa et couches de tephra, et son sommet est tronqué par un cratère de 400-500 m au sommet de large. Les avalanches de débris de Calbuco ont atteint le lac Llanquihue. Une des plus grandes éruptions historiques dans le sud du Chili a eu lieu du Calbuco en 1893-1894. Elle s'est terminée par la formation d'un dôme de lave dans le cratère sommital. Plus tard, des éruptions ont agrandi le complexe de lave-dôme. -> Voir la description complète
Une caldeira est en général un grand cratère, de plusieurs kilomètres (diamètre supérieur à 1Km) d’étendue, formé par l'effondrement du toit d'une Chambre magmatique vidangées par de grandes éruptions explosives. -> Voir la description complète
The large 30x45 km wide Caldera del Atuel is located in western Argentina just east of the Argentina-Chile border and 18 km SSW of the rim of Diamante caldera. -> Voir la description complète
Ice-capped Callaqui volcano is an elongated basaltic-andesite stratovolcano in central Chile Volcano. It has had a few small explosive eruptions in historic time, and it is known for its intense fumarolic activity. -> Voir la description complète
Camiguin de Babuyanes volcano is a small stratovolcano on the SW tip of the 22 km long Camiguin Island in the Babuyan archipelago, 35 km off the north tip of Luzon Island.
Note: A volcanic island called Camiguin is located off the north coast of Mindanao Island. -> Voir la description complète
Le Champs Phlégréens ("champs brûlants") ou Champs Phlégréens est un grand, 13 km de large caldeira imbriquée situé sous la périphérie ouest de la citiy de Naples et sous le golfe de Pozzuoli. Il contient de nombreux centres volcaniques (cônes de scories, anneaux de tuf, des caldeiras) qui ont été actifs au cours des dernières années 30-40,000. Le champ volcanique a été le site de certaines éruptions extrêmement violentes dans le passé, même si les quelques qui ont eu lieu durant les périodes historiques sont de petits événements. Aujourd'hui, il n'ya aucun signe de danger imminent réveil de l'activité, même si il ya des signes abondants de la présence d'une chambre magmatique toujours actif dans les formes de solfatares, les sources chaudes, les émissions de gaz, etc En particulier, le Campi Flegrei est tristement célèbre pour ses fréquents épisodes de déformation du sol majeur sous la forme de la grande place et downlift du sol (bradisism, voir ci-dessous). -> Voir la description complète
Campi Flegrei del Mar di Sicilia (Champs Phlégréens de la mer en Sicile) est composé d'un groupe de volcans sous-marins SW de la Sicile. -> Voir la description complète
