text:
1924 Winter Olympics medal table
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Publicity poster for the event
The 1924 Winter Olympics, officially known as the I Olympic Winter Games, and known at the time as Semaine Internationale des Sports d'Hiver ("International Winter Sports Week"), was a winter multi-sport event held in Chamonix, France, from 25 January to 5 February 1924. Norway topped the table, collecting seventeen medals in total, including four gold,[1] three of which were won by Thorleif Haug in the nordic combined and cross-country skiing events.[2] Norway also achieved two podium sweeps, winning all three medals in both the 50 km cross-country skiing and the nordic combined. This remained a record at the Winter Olympics until 2014.[a][4]
When it was held, the games were not formally recognised as being the Olympics, but acknowledged that they were held under the "high patronage of the International Olympic Committee".[5] Partly due to this, varying figures are reported for the number of participants. The International Olympic Committee (IOC) website suggests that 258 athletes from 16 nations participated in 16 events across 9 sports.[2] In contrast, the Sports-Reference website lists 313 participants from 19 countries.[5] Bill Mallon, a prominent Olympic Games historian, quotes a figure of 291 competitors in his Historical Dictionary of the Olympic Movement.[6] Meanwhile the official report for the 1924 Summer and Winter Olympics listed 293 athletes from 17 nations.[7]
Finland placed second on the table, collecting four gold medals amongst a total of eleven. Clas Thunberg won five of their medals, achieving a medal in each of the speed skating events he took part in; collecting three gold medals, one silver and one bronze.[2] Eight of the competing nations achieved at least one gold medal, with only Belgium and the hosts, France, medalling without winning a gold medal.[1] One medal was reallocated in 1974; during the games, Thorleif Haug of Norway had been awarded the bronze medal in ski jumping, along with his three gold medals. A Norwegian historian discovered that there had been a scoring error, and an American, Anders Haugen, had actually finished in third place. As Haug had died in 1934, his daughter presented Haugen, aged 83, with his medal.[8][9][10]
In the official report, the classification of nations is ranked not by medals, but rather by "points", which were awarded for each position from first to sixth; not exclusively for gold, silver and bronze. Due to this, Czechoslovakia were included in the table ahead of Belgium, due to two fourth-place finishes, one fifth and one sixth. Italy were also present, in twelfth, for their solitary sixth place.[11]
Contents
[hide]
1 Medal table
2 See also
3 Notes
4 References
Medal table[edit]
Clas Thunberg won five speed skating medals at the games for Finland.[2]
The medal table is based on information provided by the IOC and is consistent with IOC convention in its published medal tables. By default, the table is ordered by the number of gold medals the athletes from a nation have won (in this context, a nation is an entity represented by a National Olympic Committee). The number of silver medals is taken into consideration next and then the number of bronze medals. If nations are still tied, equal ranking is given and they are listed alphabetically. Two bronze medals were awarded in the 500 metres speed skating event for the third place tie.[12]
Key
* Host nation (France)
1924 Winter Olympics medal table[13]
Rank
NOC
Gold
Silver
Bronze
Total
1
Norway (NOR)
4 7 6 17
2
Finland (FIN)
4 4 3 11
3
Austria (AUT)
2 1 0 3
4
Switzerland (SUI)
2 0 1 3
5
United States (USA)
1 2 1 4
6
Great Britain (GBR)
1 1 2 4
7
Sweden (SWE)
1 1 0 2
8
Canada (CAN)
1 0 0 1
9
France (FRA)*
0 0 3 3
10
Belgium (BEL)
0 0 1 1
Total (10 NOCs)
16
16
17
49
See also[edit]
List of 1924 Winter Olympics medal winners
Notes[edit]
Jump up ^ No country achieved more than two podium sweeps until the Netherlands in 2014, but the record was tied prior to that; by Norway themselves in 1928 and 1932, the Soviet Union in 1964, East Germany in 1972 and 1984, and Germany in 1998.[3]
References[edit]
^ Jump up to: a b "1924 Medal Tally". Topend Sports. Archived from the original on 25 August 2017. Retrieved 25 August 2017.
^ Jump up to: a b c d "Chamonix 1924". International Olympic Committee. Archived from the original on 1 September 2017. Retrieved 24 August 2017.
Jump up ^ BMallon (18 February 2014). "Netherlands Speed Skating Medal Sweeps". OlympStats. Archived from the original on 25 August 2017. Retrieved 25 August 2017.
Jump up ^ "Bergsma breaks Olympic record to lead fourth Dutch medal sweep". Xinhuanet. 19 February 2014. Archived from the original on 23 September 2015. Retrieved 25 August 2017.
^ Jump up to: a b "1924 Chamonix Winter Games". Sports Reference. Archived from the original on 25 August 2017. Retrieved 25 August 2017.
Jump up ^ Mallon, Bill; Heijmans, Jereon (2011). Historical Dictionary of the Olympic Movement. Plymouth, UK: Scarecrow Press. p. 46. ISBN 978-0-8108-7522-7. Archived from the original on 14 October 2017.
Jump up ^ "Official Report of the 1924 Olympic Games (PDF) (in French). International Olympic Committee. 1924. p. 662. Archived (PDF) from the original on 26 February 2016.
Jump up ^ Jorsett, Per (13 February 2009). "Thorleif Haug". Norsk biografisk leksikon (in Norwegian). Oslo: Kunnskapsforlaget. Archived from the original on 21 September 2017. Retrieved 20 September 2017.
Jump up ^ "Anders Haugen's belated bronze medal". Ski Jumping Hill Archive. 5 January 2006. Archived from the original on 21 September 2017. Retrieved 20 September 2017.
Jump up ^ "Anders Haugen, Olympian; Medal Was Delayed 50 Years". The New York Times. AP. 19 April 1984. Archived from the original on 20 September 2017.
Jump up ^ "Official Report of the 1924 Olympic Games (PDF) (in French). International Olympic Committee. 1924. p. 661. Archived (PDF) from the original on 26 February 2016.
Jump up ^ "Chamonix 1924 / Speed Skating / 500m Men". International Olympic Committee. Archived from the original on 27 March 2017. Retrieved 25 August 2017.
Jump up ^ "International Olympic Committee – Chamonix 1924 Medal Table". International Olympic Committee. Archived from the original on 4 December 2008. Retrieved 22 October 2017.
[hide]
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Ring of Fire
From Wikipedia, the free encyclopedia
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For other uses, see Ring of Fire (disambiguation).
The Pacific Ring of Fire
Tectonic plates of the world
Great (magnitude 8.0+) earthquakes 1900–2017, with the majority positioned along the Ring of Fire
The Ring of Fire is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur. In a 40,000 km (25,000 mi) horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and plate movements. It has 452 volcanoes (more than 75% of the world's active and dormant volcanoes).[1] The Ring of Fire is sometimes called the circum-Pacific belt.
About 90%[2] of the world's earthquakes and 81%[3] of the world's largest earthquakes occur along the Ring of Fire. The next most seismically active region (5–6% of earthquakes and 17% of the world's largest earthquakes) is the Alpide belt, which extends from Java to the northern Atlantic Ocean via the Himalayas and southern Europe.[4][5]
All but three of the world's 25 largest volcanic eruptions of the last 11,700 years occurred at volcanoes in the Ring of Fire.[6]
The Ring of Fire is a direct result of plate tectonics: the movement and collisions of lithospheric plates.[7] The eastern section of the ring is the result of the Nazca Plate and the Cocos Plate being subducted beneath the westward-moving South American Plate. The Cocos Plate is being subducted beneath the Caribbean Plate, in Central America. A portion of the Pacific Plate and the small Juan de Fuca Plate are being subducted beneath the North American Plate. Along the northern portion, the northwestward-moving Pacific plate is being subducted beneath the Aleutian Islands arc. Farther west, the Pacific plate is being subducted along the Kamchatka Peninsula arcs on south past Japan. The southern portion is more complex, with a number of smaller tectonic plates in collision with the Pacific plate from the Mariana Islands, the Philippines, Bougainville, Tonga, and New Zealand; this portion excludes Australia, since it lies in the center of its tectonic plate. Indonesia lies between the Ring of Fire along the northeastern islands adjacent to and including New Guinea and the Alpide belt along the south and west from Sumatra, Java, Bali, Flores, and Timor. The famous and very active San Andreas Fault zone of California is a transform fault which offsets a portion of the East Pacific Rise under southwestern United States and Mexico. The motion of the fault generates numerous small earthquakes, at multiple times a day, most of which are too small to be felt.[8][9] The active Queen Charlotte Fault on the west coast of the Haida Gwaii, British Columbia, has generated three large earthquakes during the 20th century: a magnitude 7 event in 1929; a magnitude 8.1 in 1949 (Canada's largest recorded earthquake); and a magnitude 7.4 in 1970.[10]
Contents
[hide]
1 Andes
1.1 Bolivia
1.2 Chile
1.3 Ecuador
1.4 Peru
2 Central America
2.1 Costa Rica
2.2 Guatemala
3 North American Cordillera
3.1 Mexico
3.2 United States
3.3 Canada
4 Russia
5 Japan
6 Philippines
7 Indonesia
8 New Zealand
9 Antarctica
10 Land areas
11 See also
12 References
13 External links
Andes[edit]
For more details on this topic, see Andean Volcanic Belt.
Bolivia[edit]
Main article: List of volcanoes in Bolivia
Bolivia hosts numerous active and extinct volcanoes across its territory. The active volcanoes are located in western Bolivia where they make up the Cordillera Occidental, the western limit of the Altiplano plateau. Many of the active volcanoes are international mountains shared with Chile. All Cenozoic volcanoes of Bolivia are part of the Central Volcanic Zone (CVZ) of the Andean Volcanic Belt that results due to processes involved in the subduction of the Nazca Plate under the South American Plate. The Central Volcanic Zone is a major upper Cenozoic volcanic province.[11] Apart from Andean volcanoes, the geology of Bolivia hosts the remnants of ancient volcanoes around the Precambrian Guaporé Shield in the eastern part of the country.
Chile[edit]
Llaima's 2008 eruption
Main articles: List of volcanoes in Chile and Volcanology of Chile
The volcanoes in Chile are monitored by the National Geology and Mining Service (SERNAGEOMIN)[12][13]
Earthquake activity in Chile is related to subduction of the Nazca Plate to the east. Chile notably holds the record for the largest earthquake ever recorded, the 1960 Valdivia earthquake. Villarrica, one of Chile's most active volcanoes, rises above Villarrica Lake and the town of Villarrica. It is the westernmost of three large stratovolcanoes that trend perpendicular to the Andean chain. A 6-km-wide caldera formed during the late Pleistocene, more than 0.9 million years ago.
A 2-km-wide postglacial caldera is located at the base of the presently active, dominantly basaltic-to-andesitic cone at the northwest margin of the Pleistocene caldera. About 25 scoria cones dot Villarica's flanks. Plinian eruptions and pyroclastic flows have been produced during the Holocene from this dominantly basaltic volcano, but historical eruptions have consisted of largely mild-to-moderate explosive activity with occasional lava effusion. Lahars from the glacier-covered volcanoes have damaged towns on its flanks.
The Llaima Volcano is one of the largest and most active volcanoes in Chile. It is situated 82 km northeast of Temuco and 663 km southeast of Santiago, within the borders of Conguillío National Park. Llaima’s activity has been documented since the 17th century, and consists of several separate episodes of moderate explosive eruptions with occasional lava flows. The last major eruption occurred in 1994.[14]
Lascar erupting in 2006
Chile has experienced numerous volcanic eruptions from 60 volcanoes, including Llaima Volcano and the Chaitén Volcano. More recently, a magnitude-8.8 earthquake struck central Chile on February 27, 2010, the Puyehue-Cordón Caulle volcano erupted in 2011, and a M8.2 earthquake struck northern Chile on April 1, 2014. The main shock was preceded by a number of moderate to large shocks and was followed by a large number of moderate to very large aftershocks, including a magnitude-7.6 event on 2 April.[15]
Lascar is a stratovolcano, is the most active volcano of the northern Chilean Andes. The largest eruption of Lascar took place about 26,500 years ago, and following the eruption of the Tumbres scoria flow about 9,000 years ago, activity shifted back to the eastern edifice, where three overlapping craters were formed. Frequent small-to-moderate explosive eruptions have been recorded from Lascar in historical time since the mid-19th century, along with periodic larger eruptions that produced ash and tephra fall up to hundreds of kilometers away from the volcano.[16] The largest eruption of Lascar in recent history took place in 1993, producing pyroclastic flows as far as 8.5 km (5 mi) northwest of the summit and ash fall in Buenos Aires, Argentina,[16] more than 1,600 km (994 mi) to the southeast. The latest series of eruptions began on 18 April 2006 and was continuing as of 2011.
Chiliques is a stratovolcano located in the Antofagasta Region of Chile, immediately north of Cerro Miscanti. Laguna Lejía lies to the north of the volcano and has been dormant for at least 10,000 years, but is now showing signs of life. A January 6, 2002, nighttime thermal infrared image from ASTER revealed a hot spot in the summit crater, as well as several others along the upper flanks of the volcano’s edifice, indicating new volcanic activity. Examination of an earlier nighttime thermal infrared image from May 24, 2000, showed no such hot spots.[17]
Calbuco is a stratovolcano in southern Chile, located southeast of Llanquihue Lake and northwest of Chapo Lake, in Los Lagos Region. The volcano and the surrounding area are protected within Llanquihue National Reserve. It is a very explosive andesite volcano that underwent edifice collapse in the late Pleistocene, producing a volcanic debris avalanche that reached the lake. At least nine eruptions occurred since 1837, with the latest one in 1972. One of the largest historical eruptions in southern Chile took place there in 1893–1894. Violent eruptions ejected 30-cm bombs to distances of 8 km from the crater, accompanied by voluminous hot lahars. Strong explosions occurred in April 1917, and a lava dome formed in the crater accompanied by hot lahars. Another short explosive eruption in January 1929 also included an apparent pyroclastic flow and a lava flow. The last major eruption of Calbuco, in 1961, sent ash columns 12–15 km high and produced plumes that dispersed mainly to the southeast and two lava flows were also emitted. A minor, four-hour eruption happened on August 26, 1972. Strong fumarolic emission from the main crater was observed on August 12, 1996.
Lonquimay is a stratovolocano of late-Pleistocene to dominantly Holocene age, with the shape of a truncated cone. The cone is largely andesitic, though basaltic and dacitic rocks are present.[18] It is located in La Araucanía Region of Chile, immediately southeast of Tolhuaca volcano. Sierra Nevada and Llaima are their neighbors to the south. The snow-capped volcano lies within the protected area Malalcahuello-Nalcas. The volcano last erupted in 1988, ending in 1990. The VEI was 3. The eruption was from a flank vent and involved lava flows and explosive eruptions. Some fatalities occurred.[19]
Antuco Volcano is a stratovolocano located in the Bío Bío Region of Chile, near Sierra Velluda and on the shore of Laguna del Laja, with its last eruption in 1869.
Villarrica is one of Chile's most active volcanoes, rising above the lake and town of the same name. The volcano is also known as Rucapillán, a Mapuche word meaning "House of the Pillán". It is the westernmost of three large stratovolcanoes that trend perpendicular to the Andes along the Gastre Fault. Villarrica, along with Quetrupillán and the Chilean portion of Lanín, are protected within Villarrica National Park. Ascents of the volcano are popular with several guided ascents reaching the top during summer.
Villarrica, with its lava of basaltic-andesitic composition, is one of only five volcanoes worldwide known to have an active lava lake within its crater. The volcano usually generates strombolian eruptions, with ejection of incandescent pyroclasts and lava flows. Melting of snow and glacier ice, as well as rainfall, often causes massive lahars, such as during the eruptions of 1964 and 1971.[20]
Ecuador[edit]
Main article: List of volcanoes in Ecuador
Tungurahua spews hot lava and ash at night (1999).
In Ecuador, EPN monitors the volcanic activity in this andean nation.
Cotopaxi is a stratovolcano in the Andes, located about 50 km (31 mi) south of Quito, Ecuador, South America.[21] It is the second-highest summit in the country, reaching a height of 5,897 m (19,347 ft). Some consider it the world's highest active volcano,[22] and it is one of Ecuador's most active volcanoes. Since 1738, Cotopaxi has erupted more than 50 times, resulting in the creation of numerous valleys formed by mudflows around the volcano.
In October 1999, Pichincha Volcano erupted in Quito and covered the city with several inches of ash. Prior to that, the last major eruptions were in 1553[23] and in 1660, when about 30 cm of ash fell on the city.[24]
At 5,230 m, Sangay Volcano[25]) is an active stratovolcano in central Ecuador, and is one of the highest active volcanoes in the world and one of Ecuador's most active ones, erupting three times in recorded history. It exhibits mostly strombolian activity; the most recent eruption, which started in 1934, is still going on. Geologically, Sangay marks the southern bound of the Northern Volcanic Zone, and its position straddling two major pieces of crust accounts for its high level of activity. Sangay's roughly 500,000-year history is one of instability; two previous versions of the mountain were destroyed in massive flank collapses, evidence of which still litters its surroundings today. Sangay is one of two active volcanoes located within the namesake Sangay National Park, the other being Tungurahua to the north. As such, it has been listed as a UNESCO World Heritage Site since 1983.
Reventador is an active stratovolcano which lies in the eastern Andes of Ecuador. Since 1541, it has erupted over 25 times, with its most recent eruption in 2009,[26] but the largest historical eruption occurred in 2002. During that eruption, the plume from the volcano reached a height of 17 km, and pyroclastic flows went up to 7 km from the cone. On March 30, 2007, the mountain spewed ash again. The ash reached a height of about two miles (3 km, 11,000 ft).
Cotopaxi, outside of Quito, started activity in April 2015. A large increase in earthquakes (including harmonic tremors) and SO2 emissions began. IGPEN reported slight deformation of the edifice, suggesting an intrusion of magma under the volcano. As of 25 July, the unrest continued, and the most recent major eruption was an ash and steam eruption that occurred on August 14 and 15, 2015.[27][28][29][30][31]
Peru[edit]
Main article: List of volcanoes in Peru
Volcanoes in Peru are monitored by the Peruvian Geophysical Institute.[32]
Sabancaya is an active 5,976-metre (19,606 ft) stratovolcano in the Andes of southern Peru, about 100 kilometres (62 mi) northwest of Arequipa. It is the most active volcano in Peru, with an ongoing eruption that started in August 2014.
Ubinas is another active volcano 5,672-metre (18,609 ft) in southern Peru with an ongoing eruption.[33][34] Until 2006, this stratovolcano had not erupted for about 40 years. On April 23, 2006, Peru declared a state of emergency in towns near the volcano. On April 28, 2014, despite a recent decline in earthquakes, Ubinas Volcano erupted an ash plume on April 28, 2014.[35][36]
Central America[edit]
Costa Rica[edit]
Main article: List of volcanoes in Costa Rica
The Volcanological and Seismological Observatory of Costa Rica (OVSICORI) at the National University of Costa Rica, in Spanish Observatorio Vulcanológico y Sismológico de Costa Rica (OVSICORI)[37] have a dedicated team in charge of researching and monitoring the volcanoes, earthquakes, and other tectonic processes in the Central America Volcanic Arc. In 1984, the OVSICORI-A initiated the operation of a seismographic network designed to monitor seismic and volcanic activity throughout the national territory. Currently, the seismographic network has an analog and a digital registration system. The latter enables online analysis of seismic signals, allowing to expedite the analysis of signals and the study using modern computerized methods. Poás Volcano is an active 2,708-metre (8,885 ft) stratovolcano located in central Costa Rica; it has erupted 39 times since 1828. On February 25, 2014, a webcam from the OVSICORI captured the moment a dark cloud exploded about 1,000 feet (300 m) in the air from a massive crater of the Poás Volcano.[38][39][40]
Guatemala[edit]
Main article: List of volcanoes in Guatemala
In 1902, the Santa Maria Volcano erupted violently in Guatemala, with the largest explosions occurring over two days, ejecting an estimated 5.5 km3 (1.3 mi3) of magma. The eruption was one of the largest of the 20th century, only slightly less in magnitude to that of Mount Pinatubo in 1991. The eruption had a volcanic explosivity index of 6. Today Santiaguito is one of the world's most active volcanoes.[1] [2]
Santiaguito Volcano, 2003 eruption in Guatemala
North American Cordillera[edit]
Mexico[edit]
Main article: List of volcanoes in Mexico
The Trans-Mexican Volcanic Belt
Volcanoes of Mexico are related to subduction of the Cocos and Rivera plates to the east, which has produced large, explosive eruptions. Most active volcanoes in Mexico occur in the Trans-Mexican Volcanic Belt, which extends 900 kilometres (559 mi) from west to east across central-southern Mexico. A few other active volcanoes in northern Mexico are related to extensional tectonics of the Basin and Range Province, which splits the Baja California peninsula from the mainland.[41] Popocatépetl, lying in the eastern half of the Trans-Mexican Volcanic Belt, is the second-highest peak in Mexico after the Pico de Orizaba. It is one of the most active volcanoes in Mexico, having had more than 20 major eruptions since the arrival of the Spanish in 1519. The 1982 eruption of El Chichón, which killed about 2,000 people who lived near the volcano, created a 1-km-wide caldera that filled with an acidic crater lake. Prior to 2000, this relatively unknown volcano was heavily forested and of no greater height than adjacent nonvolcanic peaks.[41]
United States[edit]
Main article: List of volcanoes in the United States
Area of the Cascadia subduction zone, including the Cascade Volcanic Arc (red triangles)
The United States Geological Survey and the National Earthquake Information Center (NEIC) are located on the campus of the Colorado School of Mines in Golden, Colorado. Both monitor volcanos in the United States; in the western United States lies the Cascade Volcanic Arc. It includes nearly 20 major volcanoes, among a total of over 4,000 separate volcanic vents including numerous stratovolcanoes, shield volcanoes, lava domes, and cinder cones, along with a few isolated examples of rarer volcanic forms such as tuyas. Volcanism in the arc began about 37 million years ago, but most of the present-day Cascade volcanoes are less than 2,000,000 years old, and the highest peaks are less than 100,000 years old. The arc formed by the subduction of the Gorda and Juan de Fuca plates at the Cascadia subduction zone. This is a 680-mi-long fault, running 50 mi (80 km) off the coast of the Pacific Northwest from northern California to Vancouver Island, British Columbia. The plates move at a relative rate over 0.4 in (10 mm) per year at a somewhat oblique angle to the subduction zone.
Because of the very large fault area, the Cascadia subduction zone can produce very large earthquakes, magnitude 9.0 or greater, if rupture occurred over its whole area. When the "locked" zone stores energy for an earthquake, the "transition" zone, although somewhat plastic, can rupture. Thermal and deformation studies indicate that the locked zone is fully locked for 60 km (about 40 mi) down-dip from the deformation front. Further down-dip, a transition from fully locked to aseismic sliding occurs.
American Cascade Range volcano eruptions in the last 4000 years
Unlike most subduction zones worldwide, no oceanic trench is present along the continental margin in Cascadia. Instead, terranes and the accretionary wedge have been lifted up to form a series of coast ranges and exotic mountains. A high rate of sedimentation from the outflow of the three major rivers (Fraser River, Columbia River, and Klamath River) which cross the Cascade Range contributes to further obscuring the presence of a trench. However, in common with most other subduction zones, the outer margin is slowly being compressed, similar to a giant spring. When the stored energy is suddenly released by slippage across the fault at irregular intervals, the Cascadia subduction zone can create very large earthquakes such as the magnitude-9 Cascadia earthquake of 1700. Geological evidence indicates that great earthquakes may have occurred at least seven times in the last 3,500 years, suggesting a return time of 400 to 600 years. Also, evidence of accompanying tsunamis with every earthquake is seen, as the prime reason these earthquakes are known is through "scars" the tsunami left on the coast, and through Japanese records (tsunami waves can travel across the Pacific).
The 1980 eruption of Mount St. Helens was the most significant to occur in the contiguous 48 U.S. states in recorded history (VEI = 5, 0.3 cu mi, 1.2 km3 of material erupted), exceeding the destructive power and volume of material released by the 1915 eruption of California's Lassen Peak. The eruption was preceded by a two-month series of earthquakes and steam-venting episodes caused by an injection of magma at shallow depth below the mountain that created a huge bulge and a fracture system on Mount St. Helens' north slope. An earthquake at 8:32 am on May 18, 1980, caused the entire weakened north face to slide away, suddenly exposing the partly molten, gas- and steam-rich rock in the volcano to lower pressure. The rock responded by exploding into a very hot mix of pulverized lava and older rock that sped toward Spirit Lake so fast that it quickly passed the avalanching north face.
Alaska is known for its seismic and volcanic activity, holding the record for the second-largest earthquake in the world, the Good Friday earthquake, and having more than 50 volcanoes which have erupted since about 1760.[42] Volcanoes can be found not only in the mainland, but also in the Aleutian Islands.
The most recent activity in the American portion of the Ring of Fire occurred in early 2009 when Mount Redoubt in Alaska became active and finally erupted late in the evening of March 22. The eruption ended in May 2009.
Canada[edit]
Map of young volcanoes in Western Canada
See also: Volcanism in Canada
The Public Safety Geo-science Program at the Natural Resources Canada undertakes research to support risk reduction from the effects of space weather, earthquakes, tsunamis, volcanoes, and landslides.[43]
British Columbia and Yukon are home to a vast region of volcanoes and volcanic activity in the Pacific Ring of Fire.[44] Several mountains that many British Columbians look at every day are dormant volcanoes. Most of them erupted during the Pleistocene and Holocene. Although none of Canada's volcanoes are currently erupting, several volcanoes, volcanic fields, and volcanic centers are considered potentially active.[45] Hot springs are at some volcanoes, while 10 volcanoes in British Columbia appear related to seismic activity since 1975, including: the Silverthrone Caldera, Mount Meager, Wells Gray-Clearwater volcanic field, Mount Garibaldi, Mount Cayley, Castle Rock, The Volcano, Mount Edziza, Hoodoo Mountain, Crow Lagoon, and Nazko Cone.[46] The volcanoes are grouped into five volcanic belts with different tectonic settings.
The Northern Cordilleran Volcanic Province (sometimes known as the Stikine Volcanic Belt) is the most active volcanic region in Canada. It formed due to extensional cracking, faulting, and rifting of the North American Plate, as the Pacific Plate grinds and slides past the Queen Charlotte Fault, unlike subduction that produces the volcanoes in Japan, the Philippines, and Indonesia. The region has Canada's largest volcanoes,[44] much larger than the minor stratovolcanoes found in the Canadian portion of the Cascade Volcanic Arc.[44] Several eruptions are known to have occurred within the last 400 years. Mount Edziza is a huge volcanic complex that erupted several times in the past several thousand years and has formed several cinder cones and lava flows. The complex comprises the Mount Edziza Plateau, a large volcanic plateau (65 km long and 20 km wide) made of predominantly basaltic lava flows with four large stratovolcanoes built on top of the plateau. The associated lava domes and satellite cones were constructed over the past 7.5 million years during five magmatic cycles beginning with eruption of alkali basalts and ending with felsic and basaltic eruptions as late as 1,340 years ago. The blocky lava flows still maintain their original forms. Hoodoo Mountain is a tuya in northwestern British Columbia, which has had several periods of subglacial eruptions. The oldest eruptions occurred about 100,000 years ago and the most recent about 7000 years ago. Hoodoo Mountain is also considered active, so could erupt in the future. The nearby Tseax Cone and The Volcano produced some of Canada's youngest lava flows, about 150 years old.
Mount Edziza, a large shield volcano in northwestern British Columbia
Canada's worst known geophysical disaster came from the Tseax Cone during the 18th century at the southernmost end of the volcanic belt. The eruption produced a 22.5-km-long lava flow, destroying the Nisga'a villages and the death of at least 2000 Nisga'a people by volcanic gases and poisonous smoke. The Nass River valley was inundated by the lava flows and contains abundant tree molds and lava tubes. The event happened at the same time as the arrival of the first European explorers to penetrate the uncharted coastal waters of northern British Columbia. Today, the basaltic lava deposits are a draw to tourists and are part of the Nisga'a Memorial Lava Beds Provincial Park.
The Garibaldi Volcanic Belt in southwestern British Columbia is the northern extension of the Cascade Volcanic Arc in the United States (which includes Mount Baker and Mount St. Helens) and contains the most explosive young volcanoes in Canada.[47] It formed as a result of subduction of the Juan de Fuca Plate (a remnant of the much larger Farallon Plate) under the North American Plate along the Cascadia subduction zone.[47] The Garibaldi Volcanic Belt includes the Bridge River Cones, Mount Cayley, Mount Fee, Mount Garibaldi, Mount Price, Mount Meager, the Squamish Volcanic Field, and more smaller volcanoes. The eruption styles in the belt range from effusive to explosive, with compositions from basalt to rhyolite. Morphologically, centers include calderas, cinder cones, stratovolcanoes and small isolated lava masses. Due to repeated continental and alpine glaciations, many of the volcanic deposits in the belt reflect complex interactions between magma composition, topography, and changing ice configurations. The most recent major catastrophic eruption in the Garibaldi Volcanic Belt was the 2350 BP eruption of Mount Meager. It was similar to the 1980 eruption of Mount St. Helens,[47] sending an ash column about 20 km into the stratosphere.[48]
The Mount Meager volcanic complex as seen from the east near Pemberton, BC: Summits left to right are Capricorn Mountain, Mount Meager, and Plinth Peak.
The Chilcotin Group is a north-south range of volcanoes in southern British Columbia running parallel to the Garibaldi Volcanic Belt. The majority of the eruptions in this belt happened either 6–10 million years ago (Miocene) or 2–3 million years ago (Pliocene), although with some slightly more recent eruptions (in the Pleistocene).[49] It is thought to have formed as a result of back-arc extension behind the Cascadia subduction zone.[49] Volcanoes in this belt include Mount Noel, the Clisbako Caldera Complex, Lightning Peak, Black Dome Mountain, and many lava flows.
The Anahim Volcanic Belt is a line of volcanoes stretching from just north of Vancouver Island to near Quesnel, British Columbia. These volcanoes were formed 8 to 1 million years ago, and the Nazko Cone last erupted only 7,200 years ago.[50] The volcanoes generally get younger moving from the coast to the interior. These volcanoes are thought to have formed as a result of the North American Plate sliding westward over a small hotspot, called the Anahim hotspot.[50] The hotspot is considered similar to the one feeding the Hawaiian Islands.[50] The belt is defined by three large shield volcanoes (Rainbow, Ilgachuz and the Itcha Ranges) and 37 Quaternary basalt centers.
Eruptions of basaltic to rhyolitic volcanoes and hypabyssal rocks of the Alert Bay Volcanic Belt in northern Vancouver Island are probably linked with the subducted margin flanked by the Explorer and Juan de Fuca Plates at the Cascadia subduction zone. It appears to have been active during the Pliocene and Pleistocene. However, no Holocene eruptions are known, and volcanic activity in the belt has likely ceased.
Russia[edit]
Main article: List of volcanoes in Russia
Avachinsky, an active volcano on the Kamchatka Peninsula.
The Kamchatka Peninsula in the Russian Far East is one of the most various and active volcanic areas in the world,[51] with an area of 472,300 km2. It lies between the Pacific Ocean to the east and the Okhotsk Sea to the west. Immediately offshore along the Pacific coast of the peninsula runs the 10,500-m-deep Kuril-Kamchatka Trench, where rapid subduction of the Pacific Plate fuels the intense volcanism. Almost all types of volcanic activity are present, from stratovolcanoes and shield volcanoes to Hawaiian-style fissure eruptions.[51]
Over 30 active volcanoes and hundreds of dormant and extinct volcanoes are in two major volcanic belts. The most recent activity takes place in the eastern belt,[51] starting in the north at the Shiveluch volcanic complex, which lies at the junction of the Aleutian and Kamchatka volcanic arcs. Just to the south is the famous Klyuchi volcanic group, comprising the twin volcanic cones of Kliuchevskoi and Kamen, the huge volcanic complexes of Tolbachik and Ushkovsky, and a number of other large stratovolcanoes. The only active volcano in the central belt is found west of here, the huge remote Ichinsky. Farther south, the eastern belt continues to the southern slope of Kamchatka, topped by loads of stratovolcanoes, continuing onto the Kuril Islands, and southwards into Japan.
Japan[edit]
Main article: List of volcanoes in Japan
About 10% of the world's active volcanoes are found in Japan, which lies in a zone of extreme crustal instability. They are formed by subduction of the Pacific Plate and the Philippine Sea Plate. As many as 1,500 earthquakes are recorded yearly, and magnitudes of 4 to 6 are not uncommon. Minor tremors occur almost daily in one part of the country or another, causing some slight shaking of buildings. Major earthquakes occur infrequently; the most famous in the 20th century were: the Great Kantō earthquake of 1923, in which 130,000 people died; and the Great Hanshin earthquake of 17 January 1995, in which 6,434 people died. On March 11, 2011 a magnitude 9.0 earthquake hit Japan, the country's biggest ever and the fifth largest on record, according to US Geological Survey data.[52] Undersea earthquakes also expose the Japanese coastline to danger from tsunamis.
Mount Fuji at sunrise from Lake Kawaguchi
Mount Bandai, one of Japan's most noted volcanoes, rises above the north shore of Lake Inawashiro. Mount Bandai is formed of several overlapping stratovolcanoes, the largest of which is O-Bandai forming a complex volcano. O-Bandai volcano was constructed within a horseshoe-shaped caldera that formed about 40,000 years when an earlier volcano collapsed, forming the Okinajima debris avalanche, which traveled to the southwest and was accompanied by a plinian eruption. Four major phreatic eruptions have occurred during the past 5,000 years, two of them in historical time, in 806 and 1888. Seen from the south, Bandai presents a conical profile, but much of the north side of the volcano is missing as a result of the collapse of Ko-Bandai volcano during the 1888 eruption, in which a debris avalanche buried several villages and formed several large lakes.
Nearly a century ago, the north flank of Mount Bandai collapsed during an eruption quite similar to the May 18, 1980, eruption of Mount St. Helens. After a week of seismic activity, a large earthquake on July 15, 1888, was followed by a tremendous noise and a large explosion. Eyewitnesses heard about 15 to 20 additional explosions and observed that the last one was projected almost horizontally to the north.
Mount Fuji is Japan's highest and most noted volcano. The modern postglacial stratovolcano is constructed above a group of overlapping volcanoes, remnants of which form irregularities on Fuji's profile. Growth of the younger Mount Fuji began with a period of voluminous lava flows from 11,000 to 8,000 years ago, accounting for four-fifths of the volume of the younger Mount Fuji. Minor explosive eruptions dominated activity from 8,000 to 4,500 years ago, with another period of major lava flows occurring from 4,500 to 3,000 years ago. Subsequently, intermittent major explosive eruptions occurred, with subordinate lava flows and small pyroclastic flows. Summit eruptions dominated from 3,000 to 2,000 years ago, after which flank vents were active. The extensive basaltic lava flows from the summit and some of the more than 100 flank cones and vents blocked drainage against the Tertiary Misaka Mountains on the north side of the volcano, forming the Fuji Five Lakes. The last eruption of this dominantly basaltic volcano in 1707 ejected andesitic pumice and formed a large new crater on the east flank. Some minor volcanic activity may occur in the next few years.
Philippines[edit]
Main article: List of volcanoes in the Philippines
Map showing major volcanoes of the Philippines
The 1991 eruption of Mount Pinatubo is the world's second-largest terrestrial eruption of the 20th century. Successful predictions of the onset of the climactic eruption led to the evacuation of tens of thousands of people from the surrounding areas, saving many lives, but as the surrounding areas were severely damaged by pyroclastic flows, ash deposits, and later, lahars caused by rainwater remobilising earlier volcanic deposits, thousands of houses were destroyed.
Mayon Volcano overlooks a pastoral scene about five months before the volcano's violent eruption in September 1984.
Mayon Volcano is the Philippines' most active volcano. It has steep upper slopes that average 35–40° and is capped by a small summit crater. The historical eruptions of this basaltic-andesitic volcano dates back to 1616 and ranges from Strombolian to basaltic Plinian eruptions. Eruptions occur predominately from the central conduit and have also produced lava flows that travel far down the flanks. Pyroclastic flows and mudflows have commonly swept down many of the roughly 40 ravines that radiate from the summit and have often devastated populated lowland areas.
Taal Volcano has had 33 recorded eruptions since 1572. A devastating eruption occurred in 1911, which claimed more than a thousand lives. The deposits of that eruption consist of a yellowish, fairly decomposed (nonjuvenile) tephra with a high sulfur content. The most recent period of activity lasted from 1965 to 1977, and was characterized by the interaction of magma with the lake water, which produced violent phreatic and phreatomagmatic eruptions. Although the volcano has been dormant since 1977, it has shown signs of unrest since 1991, with strong seismic activity and ground-fracturing events, as well as the formation of small mud geysers on parts of the island.
Kanlaon Volcano, the most active volcano in the central Philippines, has erupted 25 times since 1866. Eruptions are typically phreatic explosions of small-to-moderate size that produce minor ash falls near the volcano. On August 10, 1996, Kanlaon erupted without warning, killing British student Julian Green and Filipinos Noel Tragico and Neil Perez, who were among 24 mountain climbers who were trapped near the summit.
Indonesia[edit]
See also: List of volcanoes in Indonesia and 2010 eruptions of Mount Merapi
Mount Merapi in Central Java
Major volcanoes in Indonesia
The volcanoes in Indonesia are among the most active of the Pacific Ring of Fire. They are formed due to subduction zones of three main active tectonic plates namely the Eurasian Plate, Pacific Plate, and Indo-Australian Plate.[53] Some of the volcanoes are notable for their eruptions, for instance, Krakatau for its global effects in 1883, Lake Toba for its supervolcanic eruption estimated to have occurred 74,000 BP, which was responsible for six years of volcanic winter, and Mount Tambora, for the most violent eruption in recorded history in 1815. The eruption of Mount Tambora caused widespread harvest failures in Northern Europe, the Northeastern United States, and eastern Canada in 1816, which was known as the Year Without a Summer.
The most active volcanoes are Kelud and Mount Merapi on Java island, which have been responsible for thousands of deaths in the region. Since AD 1000, Kelud has erupted more than 30 times, of which the largest eruption was at scale 5 on the Volcanic Explosivity Index, while Merapi has erupted more than 80 times. The International Association of Volcanology and Chemistry of the Earth's Interior has named Merapi as a Decade Volcano since 1995 because of its high volcanic activity. Another active volcano is Sinabung which erupted since 2013 until now.
New Zealand[edit]
See also: List of earthquakes in New Zealand and Volcanism in New Zealand
Major volcanoes of New Zealand
View of Mount Taranaki from Stratford.
GNS Science was known as the Institute of Geological and Nuclear Sciences from 1992 to 2005. GNS Science was partially commercialised, and now operates as a government-owned company rather than as a government department.
Originally part of the Department of Scientific and Industrial Research (DSIR), it was established as an independent organisation when the Crown Research Institutes were created in 1992.
As well as undertaking basic research, and operating the national geological hazards monitoring network,[54] GNS Science is employed, both in New Zealand and overseas, by various private groups (notably energy companies), as well as central and local government agencies, to provide scientific advice and information.[55]
GNS Science is based in Avalon, Lower Hutt, with facilities in Dunedin and Wairakei.
New Zealand contains the world's strongest concentration of youthful rhyolitic volcanoes, and voluminous sheets blanket much of the North Island. The earliest historically-dated eruption was at Whakaari/White Island in 1826,[56] followed in 1886 by the country's largest historical eruption at Mount Tarawera. Much of the region north of New Zealand's North Island is made up of seamounts and small islands, including 16 submarine volcanoes. In the last 1.6 million years, most of New Zealand's volcanism is from the Taupo Volcanic Zone.[57]
Mount Ruapehu, at the southern end of the Taupo Volcanic Zone, is one of the most active volcanoes.[58] It began erupting at least 250,000 years ago. In recorded history, major eruptions have been about 50 years apart,[58] in 1895, 1945, and 1995–1996. Minor eruptions are frequent, with at least 60 since 1945. Some of the minor eruptions in the 1970s generated small ash falls and lahars that damaged ski fields.[59] Between major eruptions, a warm acidic crater lake forms, fed by melting snow. Major eruptions may completely expel the lake water. Where a major eruption has deposited a tephra dam across the lake's outlet, the dam may collapse after the lake has refilled and risen above the level of its normal outlet, the outrush of water causing a large lahar. The most notable lahar caused the Tangiwai disaster on December 24, 1953, when 151 people aboard a Wellington to Auckland express train were killed after the lahar destroyed the Tangiwai rail bridge just moments before the train was due. In 2000, the ERLAWS system was installed on the mountain to detect such a collapse and alert the relevant authorities.
The Auckland volcanic field on the North Island of New Zealand has produced a diverse array of explosive craters, scoria cones, and lava flows. Currently dormant, the field is likely to erupt again with the next "hundreds to thousands of years", a very short timeframe in geologic terms.[60] The field contains at least 40 volcanoes, most recently active about 600 years ago at Rangitoto Island, erupting 2.3 km3 of lava.
Antarctica[edit]
Main article: List of volcanoes in Antarctica
Mount Erebus, 1972
The Pacific Ring of Fire is completed in the south by the continent of Antarctica,[61] which includes many large volcanoes. The makeup and structure of the volcanoes in Antarctica change largely from the other places around the ring. In contrast, the Antarctic Plate is almost completely surrounded by extensional zones, with several mid-ocean ridges which encircle it, with only a small subduction zone at the tip of the Antarctic Peninsula, reaching eastward to the remote South Sandwich Islands.[61] The most well known volcano in Antarctica is Mount Erebus, which is also the world's southernmost active volcano.[61] In many respects the geology of the Antarctic Peninsula is an extension of the Andes, hence the name sometimes used by geologists: "Antarctandes". At the opposite side of the continent, the volcanoes of Victoria Land may be seen as the 'other end' of the Antarctandes, thus completing the Pacific Ring of Fire and continuing up through the Balleny Islands to New Zealand.
Mount Erebus is the second-highest volcano in Antarctica (after Mount Sidley) and the southernmost active volcano on earth. It is the sixth-highest ultra mountain on an island.[16] With a summit elevation of 3,794 m (12,448 ft), it is located on Ross Island, which is also home to three inactive volcanoes, Mount Terror, Mount Bird, and Mount Terra Nova.
The volcano has been observed to be continuously active[citation needed] since 1972 and is the site of the Mount Erebus Volcano Observatory run by the New Mexico Institute of Mining and Technology.[62] Mount Erebus is currently the most active volcano in Antarctica and is the current eruptive zone of the Erebus hotspot.
The volcanoes of the Victoria Land area are the most well known in Antarctica,[61] most likely because they are the most accessible. Much of Victoria Land is mountainous, developing the eastern section of the Transantarctic Mountains, and the several scattered volcanoes include Mount Overlord and Mount Melbourne in the northern part.[61] Farther south are two more well-known volcanoes, Mount Discovery and Mount Morning, which are on the coast across from Mount Erebus and Mount Terror on Ross Island. The volcanism in this area is caused by rifting along a number of rift zones increasing mainly north-south similar to the coast.[61]
Marie Byrd Land contains the largest volcanic region in Antarctica, covering a length of almost 600 mi (970 km) along the Pacific coast.[61] The volcanism is the result of rifting along the vast West Antarctic Rift, which extends from the base of the Antarctic Peninsula to the surrounding area of Ross Island, and the volcanoes are found along the northern edge of the rift.[61] Protruding up through the ice are a large number of major shield volcanoes, including Mount Sidley, which is the highest volcano in Antarctica.[61] Although a number of the volcanoes are relatively young and are potentially active (Mount Berlin, Mount Takahe, Mount Waesche, and Mount Siple), others such as Mount Andrus and Mount Hampton are over 10 million years old, yet maintain uneroded constructional forms.[61] The desert-like surroundings of the Antarctic interior, along with a very thick and stable ice sheet which encloses and protects the bases of the volcanoes, which decreases the speed of erosion by an issue of perhaps a thousand relative to volcanoes in moist temperate or tropical climates.
Land areas[edit]
Papua New Guinea and tectonic plates: Pacific Plate, Australian Plate, Caroline Plate, Banda Sea Plate (as "Mer de Banda"), Woodlark Plate, Bird's Head Plate, Maoke Plate, Solomon Sea Plate, North Bismarck Plate, South Bismarck Plate and Manus Plate (in French)
Puysegur Trench and
Macquarie Ridge
Taupo Volcanic Zone
Kermadec Islands
Tonga Islands
Fiji Islands
Bougainville and Solomon Islands
New Hebrides Arc
Bismarck Volcanic Arc, junction
Tanimbar and Kai Islands
Lesser Sunda Islands
Sunda Arc
Andaman and Nicobar Islands
Izu-Bonin-Mariana Arc
Mariana Islands
Bonin Islands
Izu Islands
Philippine Mobile Belt
Taiwan
Ryukyu Islands
Japan, Boso Triple Junction
Kuril Islands
Kamchatka Peninsula
American Cordillera
North American Cordillera
Aleutian Arc
Aleutian Islands
Aleutian Range
Eastern Alaska, U.S.
Northern Cordilleran Volcanic Province
Cascade Volcanic Arc and
Rio Grande rift
Sierra Nevada (U.S.)
Trans-Mexican Volcanic Belt
Central America Volcanic Arc
Andes
North Volcanic Zone
Central Volcanic Zone
South Volcanic Zone
Austral Volcanic Zone
Scotia Arc
South Sandwich Islands
Antarctica
Antarctic Peninsula
Victoria Land
See also[edit]
Earthquakes portal
Volcanoes portal
2004 Indian Ocean earthquake and tsunami
2010 Chile earthquake
2011 Tōhoku earthquake and tsunami
Andesite line
Geology of the Pacific Northwest
Katsuhiko Ishibashi
Pacific Rim
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Jump up ^ "Chile volcano forces evacuations". BBC. January 2, 2008.
Jump up ^ "Magnitude 8.8 – OFFSHORE MAULE, CHILE". February 27, 2010. Archived from the original on 2010-04-10. Retrieved February 28, 2010.
^ Jump up to: a b c "Mount Erebus". Global Volcanism Program. Smithsonian Institution. Retrieved 2008-12-29.
Jump up ^ "Chiliques Volcano, Chile". Visible Earth. NASA. Retrieved 2007-03-24.
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Jump up ^ La erupción de 1971, Villarrica Volcano Visual Observation Project. 2008.
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Jump up ^ "Cotopaxi". Encyclopædia Britannica.
Jump up ^ Climate and Weather, Kington, J. Collins London, (2010)
Jump up ^ "Ecuadoreans Wait Uneasily On Volcanoes". Associated Press. 28 November 1999 – via The New York Times.
Jump up ^ "Sangay: Synonyms and subfeatures". Global Volcanism Program. Smithsonian National Museum of Natural History. Retrieved 5 February 2012.
Jump up ^ Reventador volcano spews lava near Ecuador capital - AP Online | HighBeam Research
Jump up ^ "A Restless Volcano Puts Ecuador on Edge Once More". WIRED. 17 June 2015.
Jump up ^ http://www.igepn.edu.ec/cotopaxi National Polytechnic School Geophysics Institute is constantly monitoring Cotopaxi
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Jump up ^ volcanodiscovery.com/cotopaxi/news/53218/Cotopaxi-volcano-Ecuador-increased-seismic-activity-volcanic-unrest.html
Jump up ^ elcomercio.com/actualidad/volcan-cotopaxi-erupcion-actividad-seguros.html
Jump up ^ "Official Web Site of the Peruvian Geophysical Institute".
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Jump up ^ "Poás Volcano Erupts in Central Costa Rica". New York Daily News.
Jump up ^ "Volcano tourists enjoy the phreatic eruption of the Poás Volcano".
Jump up ^ "Despite Record Breaking Eruptions at Poas Volcano the Park Remains Open for Visitors to Enjoy". Archived from the original on December 5, 2014. Retrieved December 5, 2014.
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^ Jump up to: a b c "Garibaldi Volcanic Belt". Calalogue of Canadian volcanoes. Archived from the original on 2006-02-19. Retrieved 2007-07-31.
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^ Jump up to: a b "Chilcotin Plateau basalts". Catalogue of Canadian volcanoes. Archived from the original on 2008-03-15. Retrieved 2007-07-31.
^ Jump up to: a b c "Anahim Volcanic Belt". Catalogue of Canadian volcanoes. Archived from the original on 2006-02-19. Retrieved 2007-07-31.
^ Jump up to: a b c Skiing the Pacific Ring of Fire and Beyond: Kamchatka & Kuril Islands Retrieved on 2007-08-01
Jump up ^ "LIST: Japan quake seventh largest in history". Smh.com.au. 2011-03-11. Retrieved 2011-03-19.
Jump up ^ RI sits on Pacific "ring of fire" : official
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Jump up ^ "Mount Erebus Volcano Observatory". New Mexico Tech. Retrieved 2008-12-29. [permanent dead link]
External links[edit]
Wikimedia Commons has media related to Maps of the Pacific Ring of Fire.
Historic Earthquakes & Earthquake Statistics at the United States Geological Survey
DESCRIPTION: "Ring of Fire", Plate Tectonics, Sea-Floor Spreading, Subduction Zones, "Hot Spots" at the USGS Cascades Volcano Observatory, Vancouver, Washington Web site.
Map of the Ring of Fire
Ring of Fire, tectonic activity
The Ring of Fire at work
Physical World Map 2004-04-01 CIA World Factbook; Robinson Projection; standard parallels 38°N and 38°S
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Related subjects and articles
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Countries of the Pacific Ring of Fire
Belize • Bolivia • Brazil • Canada • Colombia • Chile • Costa Rica • Ecuador • East Timor • El Salvador • Micronesia • Fiji • Guatemala • Honduras • Indonesia • Japan • Kiribati • Mexico • New Zealand • Nicaragua • Palau • Papua New Guinea • Panama • Peru • Philippines • Russia • Samoa • Solomon Islands • Tonga • Tuvalu • United States
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Oceanic Trenches of the Pacific Ring of Fire
Aleutian Trench • Bougainville Trench • Kermadec Trench • Izu Bonin Trench • Japan Trench • Kurile Trench • Mariana Trench • Middle America Trench • Peru–Chile Trench • Philippine Trench • Ryukyu Trench • Tonga Trench • Yap Trench
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Tectonic Plates of the Pacific Ring of Fire
Antarctic Plate • Australian Plate • Caribbean Plate • Cocos Plate • Eurasian Plate • Explorer Plate • Gorda Plate • Juan de Fuca Plate • Nazca Plate • North American Plate • Pacific Plate • Philippine Sea Plate • Rivera Plate • South American Plate
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Volcanoes of the Pacific Ring of Fire
Baker • Bulusan • Cold Bay • Concepción • Fuego • Fuji • Galeras • Hood • Mount Erebus • Krakatoa • Mayon • Cascade Volcanoes • Merapi • Momotombo • Novarupta • Parícutin • Pico de Orizaba • Pinatubo • Popocatépetl • Shasta • Rainier • Ruapehu • Nevado del Ruiz • Saint Helens • Tambora • Taranaki • Tungurahua • Usu • Hoodoo • Edziza • Tseax • The Volcano • Meager • Garibaldi • Cayley • Silverthrone • Volcano Mountain
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Other Notable Geographic Features of the Pacific Ring of Fire
Alaska • Aleutian Islands • American cordillera • Andes • Antarctica • Bali • Borneo • Bougainville • British Columbia • California • Cascade Range • Challenger Deep • Coast Mountains • Fais Island • Flores • Guam • Honshū • Insular Mountains • Java • Kamchatka • Kurile Islands • Luzon • Mariana Islands • Melanesia • Micronesia • Mindanao • New Guinea • North Island (NZL) • Northern Mariana Islands • Oregon • Pacific Coast Range • Pacific Ocean • Polynesia • Rocky Mountains • San Andreas Fault • Queen Charlotte Fault • Sierra Madre (PHL) • Sierra Madre (USA) • Sierra Madre del Sur • Sierra Madre Occidental • Sierra Madre Oriental • South Island (NZL) • Sulawesi • Timor • Washington • Yap • Yukon Territory
Retrieved from "https://en.wikipedia.org/w/index.php?title=Ring_of_Fire&oldid=821992961"
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This page was last edited on 23 January 2018, at 20:27.
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