73-418: Volcán Ixtepeque is a stratovolcano in southern Guatemala . The peak of the volcano lies at an altitude of 1,292 m (4,239 ft) above sea level. It consists of several rhyolitic lava domes and basaltic cinder cones . Its name is derived from the nahuatl word for obsidian . Ixtepeque was one of the most important obsidian sources in pre-Columbian Mesoamerica. This Guatemala location article
146-747: A 4-inch thick ash layer can weigh 120-200 pounds and can get twice as heavy when wet. Wet ash also poses a risk to electronics due to its conductive nature. Dense clouds of hot volcanic ash can be expelled due to the collapse of an eruptive column , or laterally due to the partial collapse of a volcanic edifice or lava dome during explosive eruptions . These clouds are known as pyroclastic surges and in addition to ash , they contain hot lava , pumice , rock , and volcanic gas . Pyroclastic surges flow at speeds over 50 mph and are at temperatures between 200 °C – 700 °C. These surges can cause major damage to property and people in their path. Lava flows from stratovolcanoes are generally not
219-479: A fast moving mudflow . Lahars are typically about 60% sediment and 40% water. Depending on the abundance of volcanic debris the lahar can be fluid or thick like concrete. Lahars have the strength and speed to flatten structures and cause great bodily harm, gaining speeds up to dozens of kilometers per hour. In the 1985 eruption of Nevado del Ruiz in Colombia , Pyroclastic surges melted snow and ice atop
292-515: A final intermediate composition . When the magma nears the top surface, it pools in a magma chamber within the crust below the stratovolcano. The processes that trigger the final eruption remain a question for further research. Possible mechanisms include: These internal triggers may be modified by external triggers such as sector collapse , earthquakes , or interactions with groundwater . Some of these triggers operate only under limited conditions. For example, sector collapse (where part of
365-580: A number of international organizations. It also participates in most international conferences on economic and political issues. Since 2007, Cape Verde has a special partnership status with the EU , under the Cotonou Agreement , and might apply for special membership , in particular because the Cape Verdean escudo , the country's currency, is indexed to the euro . In 2011 Cape Verde ratified
438-769: A result of intraplate volcanism on oceanic islands far from plate boundaries. Examples are Teide in the Canary Islands , and Pico do Fogo in Cape Verde . Stratovolcanoes in the East African Rift include Ol Doinyo Lengai in Tanzania, and Longonot in Kenya. Subduction zone volcanoes form when hydrous minerals are pulled down into the mantle on the slab. These hydrous minerals, such as chlorite and serpentine , release their water into
511-461: A significant threat to humans or animals because the highly viscous lava moves slowly enough for everyone to evacuate. Most deaths attributed to lava are due to related causes such as explosions and asphyxiation from toxic gas . Lava flows can bury homes and farms in thick volcanic rock which greatly reduces property value. However, not all stratovolcanoes erupt viscous and sticky lava . Nyiragongo , near Lake Kivu in central Africa ,
584-552: A steep profile with a summit crater and explosive eruptions. Some have collapsed summit craters called calderas . The lava flowing from stratovolcanoes typically cools and solidifies 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 can travel as far as 8 km (5 mi). The term composite volcano
657-569: A successful operation to put an end to a drug trafficking group which smuggled cocaine from Colombia to the Netherlands and Germany using the country as a reorder point. The operation took more than three years, being a secret operation during the first two years, and ended in 2010. In 2016, Cape Verdean Armed Forces were involved in the Monte Tchota massacre , a green-on-green incident that resulted in 11 deaths. The Cape Verde archipelago
730-539: Is Santiago, which hosts the nation's capital, Praia, the principal urban agglomeration in the archipelago. Three of the Cape Verde islands, Sal, Boa Vista, and Maio, are fairly flat, sandy, and dry; the others are generally rockier with more vegetation. Geologically, the islands, covering a combined area of slightly over 4,033 square kilometres (1,557 square miles), are principally composed of igneous rocks , with volcanic structures and pyroclastic debris comprising
803-484: Is a stub . You can help Misplaced Pages by expanding it . This article related to a protected area in North America is a stub . You can help Misplaced Pages by expanding it . Stratovolcano A stratovolcano , also known as a composite volcano , is a conical volcano built up by many alternating layers ( strata ) of hardened lava and tephra . Unlike shield volcanoes , stratovolcanoes are characterized by
SECTION 10
#1732772896417876-531: Is a passive release of gas during periods of dormancy. As per the above examples, while eruptions like Mount Unzen have caused deaths and local damage, the impact of the June 1991 eruption of Mount Pinatubo was seen globally. The eruptive columns reached heights of 40 km and dumped 17 megatons of SO 2 into the lower stratosphere . The aerosols that formed from the sulfur dioxide (SO 2 ), carbon dioxide (CO 2 ), and other gases dispersed around
949-571: Is called Cidade Velha ("Old City"), to distinguish it from a town of the same name on a different Cape Verdean island ( Ribeira Grande on the island of Santo Antão ). The original Ribeira Grande was the first permanent European settlement in the tropics . In the 16th century, the archipelago prospered from the Atlantic slave trade . Pirates occasionally attacked the Portuguese settlements. Francis Drake , an English privateer , twice sacked
1022-719: Is in the Atlantic Ocean, approximately 570 kilometres (350 mi) off the western coast of the African continent, near Senegal, The Gambia, and Mauritania as well as part of the Macaronesia ecoregion . It lies between latitudes 14° and 18°N , and longitudes 22° and 26°W . The country is a horseshoe-shaped cluster of ten islands (nine inhabited) and eight islets, that constitute an area of 4033 km (1557 sq mi). The islands are spatially divided into two groups: The largest island, both in size and population,
1095-451: Is the most famous example of a hazardous stratovolcano eruption. It completely smothered the nearby ancient cities of Pompeii and Herculaneum with thick deposits of pyroclastic surges and pumice ranging from 6–7 meters deep. Pompeii had 10,000-20,000 inhabitants at the time of eruption. Mount Vesuvius is recognized as one of the most dangerous of the world's volcanoes, due to its capacity for powerful explosive eruptions coupled with
1168-450: Is typically between 700 and 1,200 °C (1,300-2,200 °F). Volcanic bombs are masses of unconsolidated rock and lava that are ejected during an eruption. Volcanic bombs are classified as larger than 64mm (2.5 inches). Anything below 64mm is classified as a volcanic block . When erupted Bombs are still molten and partially cool and solidify on their descent. They can form ribbon or oval shapes that can also flatten on impact with
1241-1014: Is used because the strata are usually mixed and uneven instead of neat layers. They are among the most common types of volcanoes; more than 700 stratovolcanoes have erupted lava during the Holocene Epoch (the last 11,700 years), and many older, now extinct, stratovolcanoes erupted lava as far back as Archean times. Stratovolcanoes are typically found in subduction zones but they also occur in other geological settings. Two examples of stratovolcanoes famous for catastrophic eruptions are Krakatoa in Indonesia (which erupted in 1883 claiming 36,000 lives) and Mount Vesuvius in Italy (which erupted in 79 A.D killing an estimated 2,000 people). In modern times, Mount St. Helens (1980) in Washington State , US, and Mount Pinatubo (1991) in
1314-485: Is usually defined as terrain that receives less than 250 mm (9.8 in) of annual rainfall. Sal's total of 145 mm (5.7 in) confirms this classification. Most of the year's rain falls in September. Sal, Boa Vista, and Maio have a flat landscape and arid climate, whilst the other islands are generally rockier and have more vegetation. Because of the infrequent occurrence of rainfall, where not mountainous,
1387-403: Is very dangerous because its magma has an unusually low silica content , making it much less viscous than other stratovolcanoes. Low viscosity lava can generate massive lava fountains , while lava of thicker viscosity can solidify within the vent, creating a volcanic plug . Volcanic plugs can trap gas and create pressure in the magma chamber, resulting in violent eruptions. Lava
1460-564: The April 1974 revolution in Portugal , the PAIGC became an active political movement in Cape Verde. In December 1974, the PAIGC and Portugal signed an agreement providing for a transitional government composed of Portuguese and Cape Verdeans. On 30 June 1975, Cape Verdeans elected a National Assembly which received the instruments of independence from Portugal on 5 July 1975. Immediately following
1533-580: The Macaronesia ecoregion , along with the Azores , the Canary Islands , Madeira and the Savage Isles . The Cape Verde archipelago was uninhabited until the 15th century, when Portuguese explorers discovered and colonized the islands, thus establishing the first European settlement in the tropics. Because the Cape Verde islands were conveniently located to play a role in the Atlantic slave trade , Cape Verde became economically prosperous during
SECTION 20
#17327728964171606-736: The November 1980 coup in Guinea-Bissau , relations between Cape Verde and Guinea-Bissau became strained. Cape Verde abandoned its hope for unity with Guinea-Bissau and formed the African Party for the Independence of Cape Verde (PAICV). Problems have since been resolved and relations between the countries are good. The PAICV and its predecessor established a one-party system and ruled Cape Verde from independence until 1990. Responding to growing pressure for pluralistic democracy,
1679-579: The Philippines have erupted catastrophically, but with fewer deaths. Stratovolcanoes are common at subduction zones , forming chains and clusters along plate tectonic boundaries where an oceanic crust plate is drawn under a continental crust plate (continental arc volcanism, e.g. Cascade Range , Andes , Campania ) or another oceanic crust plate ( island arc volcanism, e.g. Japan , Philippines , Aleutian Islands ). Stratovolcanoes also occur in some other geological settings, for example as
1752-547: The Portuguese language Cabo Verde ('green cape'), the name that Portuguese explorers gave the cape in 1444, a few years before they came across the islands. On 24 October 2013, the country's delegation to the United Nations informed it that other countries should no longer use Cape Verde or any other translations of Cabo Verde as part of its official name: all countries should use Republic of Cabo Verde as
1825-483: The Republic of Cabo Verde , is an island country and archipelagic state of West Africa in the central Atlantic Ocean, consisting of ten volcanic islands with a combined land area of about 4,033 square kilometres (1,557 sq mi). These islands lie between 600 and 850 kilometres (320 and 460 nautical miles) west of Cap-Vert , the westernmost point of continental Africa. The Cape Verde islands form part of
1898-847: The Rome Statute of the International Criminal Court . In 2017 Cape Verde signed the UN treaty on the Prohibition of Nuclear Weapons . The judicial system consists of a Supreme Court of Justice – whose members are appointed by the president, the National Assembly, and the Board of the Judiciary ;– and regional courts. Separate courts hear civil, constitutional, and criminal cases. Appeals are to
1971-891: The magma is too viscous to allow easy escape of volcanic gases . As a consequence, the tremendous internal pressures of the trapped volcanic gases remain and intermingle in the pasty magma . Following the breaching of the vent and the opening of the crater, the magma degasses explosively. The magma and gases blast out with high speed and full force. Since 1600 CE , nearly 300,000 people have been killed by volcanic eruptions . Most deaths were caused by pyroclastic flows and lahars , deadly hazards that often accompany explosive eruptions of subduction-zone stratovolcanoes. Pyroclastic flows are swift, avalanche-like, ground-sweeping, incandescent mixtures of hot volcanic debris, fine ash , fragmented lava , and superheated gases that can travel at speeds over 150 km/h (90 mph). Around 30,000 people were killed by pyroclastic flows during
2044-443: The mantle which decreases its melting point by 60 to 100 °C. The release of water from hydrated minerals is termed " dewatering ", and occurs at specific pressures and temperatures for each mineral, as the plate descends to greater depths. This allows the mantle to partially melt and generate magma . This is called flux melting . The magma then rises through the crust , incorporating silica-rich crustal rock, leading to
2117-564: The (then) capital Ribeira Grande in 1585 when it was a part of the Iberian Union . After a French attack in 1712, the town declined in importance relative to nearby Praia , which became the capital in 1770. The decline in the slave trade in the 19th century resulted in an economic crisis. Cape Verde's early prosperity slowly vanished. However, the islands' position astride mid-Atlantic shipping lanes made Cape Verde an ideal location for re-supplying ships. Because of its excellent harbour,
2190-573: The 16th and 17th centuries, attracting merchants, privateers , and pirates . It declined economically in the 19th century after the suppression of the Atlantic slave trade by the British Empire, and many of its inhabitants emigrated during that period. However, Cape Verde gradually recovered economically by becoming an important commercial center and useful stopover point along major shipping routes. Cape Verde became independent in 1975. Since
2263-616: The 1902 eruption of Mount Pelée on the island of Martinique in the Caribbean . During March and April 1982, El Chichón in the State of Chiapas in southeastern Mexico , erupted 3 times, causing the worst volcanic disaster in that country's history and killied more than 2,000 people in pyroclastic flows . Two Decade Volcanoes that erupted in 1991 provide examples of stratovolcano hazards. On 15 June, Mount Pinatubo erupted and caused an ash cloud to shoot 40 km (25 mi) into
Ixtepeque - Misplaced Pages Continue
2336-485: The 1982 eruption of Galunggung in Java , British Airways Flight 9 flew into the ash cloud, causing it to sustain temporary engine failure and structural damage. Although no crashes have happened due to ash, more than 60, mostly commercial aircraft , have been damaged. Some of these incidents resulted in emergency landings. Ashfalls are a threat to health when inhaled and are also a threat to property. A square yard of
2409-472: The 2016 parliamentary elections , taking back parliamentary majority after 15 year-rule of African Party for the Independence of Cape Verde (PAICV). In April 2021, the ruling center-right Movement for Democracy (MpD) of Prime Minister Ulisses Correia e Silva won the parliamentary election . In October 2021, opposition candidate and former prime minister, Jose Maria Neves of PAICV, won Cape Verde's presidential election. On 9 November 2021, Jose Maria Neves
2482-585: The 5,321 m (17,457 ft) high Andean volcano. The ensuing lahar killed 25,000 people and flooded the city of Armero and nearby settlements. As a volcano forms, several different gases mix with magma in the volcanic chamber. During an eruption the gases are then released into the atmosphere which can lead to toxic human exposure. The most abundant of these gases is H 2 O ( water ) followed by CO 2 ( carbon dioxide ), SO 2 ( sulfur dioxide ), H 2 S ( hydrogen sulfide ), and HF ( hydrogen fluoride ). If at concentrations of more than 3% in
2555-582: The Cape Verde Islands. These are referred to as Cape Verde-type hurricanes . These hurricanes can become very intense as they cross warm Atlantic waters away from Cape Verde. The average hurricane season has about two Cape Verde-type hurricanes, which are usually the largest and most intense storms of the season because they often have plenty of warm open ocean over which to develop before encountering land. The five largest Atlantic tropical cyclones on record have been Cape Verde-type hurricanes. Most of
2628-471: The Cape Verde archipelago are Diogo Dias , Diogo Afonso, Venetian Alvise Cadamosto , and Diogo Gomes (who had accompanied António de Noli on his voyage of discovery, and who claimed to have been the first to land on the Cape Verdean island of Santiago, and the first to name that island). In 1462, Portuguese settlers arrived at Santiago and founded a settlement they called Ribeira Grande. Today it
2701-617: The National Assembly ;– MpD (36), PAICV (25), and the Cape Verdean Independent Democratic Union (UCID) (3). The two main political parties are PAICV and MpD. Movement for Democracy (MpD) ousted the ruling African Party for the Independence of Cape Verde (PAICV) for the first time in 15 years in the 2016 parliamentary election, at which time its leader, Ulisses Correia e Silva, became prime minister. Jorge Carlos Almeida Fonseca
2774-794: The PAICV called an emergency congress in February 1990 to discuss proposed constitutional changes to end one-party rule. Opposition groups came together to form the Movement for Democracy (MpD) in Praia in April 1990. The one-party state was abolished on 28 September 1990, and the first multi-party elections were held in January 1991. The MpD won a majority of the seats in the National Assembly, and MpD presidential candidate António Mascarenhas Monteiro defeated
2847-567: The PAICV's candidate with 73.5% of the votes. Legislative elections in December 1995 increased the MpD majority in the National Assembly. A February 1996 presidential election returned President Monteiro to office. Legislative elections in January 2001 returned power to the PAICV, with the PAICV holding 40 of the National Assembly seats, MpD 30, and Party for Democratic Convergence (PCD) and Labour and Solidarity Party (PTS) 1 each. In February 2001,
2920-525: The PAICV-supported presidential candidate Pedro Pires defeated former MpD leader Carlos Veiga by only 13 votes. President Pedro Pires was narrowly re-elected in 2006 elections . President Jorge Carlos Fonseca led the country after the 2011 Cape Verde presidential election and he was re-elected in the 2016 election . He was supported by the Movement for Democracy Party. MpD also won in
2993-748: The Supreme Court. The military of Cape Verde consists of the National Guard and the Coast Guard; 0.7% of the country's GDP was spent on the military in 2005. Having fought their only battles in the war for independence against Portugal between 1974 and 1975, the efforts of the Cape Verdean armed forces have turned to combating international drug trafficking. In 2007, together with the Cape Verdean Police , they carried out Operation Flying Launch ( Operacão Lancha Voadora ),
Ixtepeque - Misplaced Pages Continue
3066-752: The United States maintain embassies in Praia. Cape Verde maintains a vigorously active foreign policy, especially in Africa. Cape Verde is a founding member state of the Community of Portuguese Language Countries (CPLP), also known as the Lusophone Commonwealth, an international organization and political association of Lusophone nations across four continents, where Portuguese is an official language. Cape Verde has bilateral relations with some Lusophone nations and holds membership in
3139-506: The air temperature is cooler than in Senegal, but the sea is warmer. Due to the relief of some islands, such as Santiago with its steep mountains, the islands can have orographically induced precipitation, allowing rich woods and luxuriant vegetation to grow where the humid air condenses soaking the plants, rocks, soil, logs, moss, etc. On the higher islands and somewhat wetter islands, exclusively in mountainous areas, like Santo Antão island,
3212-819: The air, when breathed in CO 2 can cause dizziness and difficulty breathing. At more than 15% concentration CO 2 causes death. CO 2 can settle into depressions in the land, leading to deadly, odorless pockets of gas. SO 2 classified as a respiratory, skin, and eye irritant if come into contact with. It is known for its pungent egg smell and role in ozone depletion and has the potential to cause acid rain downwind of an eruption. H 2 S has an even stronger odor than SO 2 as well as being even more toxic. Exposure for less than an hour at concentrations of over 500 ppm causes death. HF and similar species can coat ash particles and once deposited can poison soil and water. Gases are also emitted during volcanic degassing, which
3285-748: The air. It produced large pyroclastic surges and lahar floods that caused a lot of damage to the surrounding area. Pinatubo , located in Central Luzon just 90 km (56 mi) west-northwest of Manila , had been dormant for six centuries before the 1991 eruption. This eruption was one of the 2nd largest in the 20th century. It produced a large volcanic ash cloud that affected global temperatures, lowering them in areas as much as .5 °C. The volcanic ash cloud consisted of 22 million tons of SO 2 which combined with water droplets to create sulfuric acid . In 1991 Japan's Unzen Volcano also erupted, after 200 years of inactivity. It's located on
3358-481: The base of towering mountains. Ocean cliffs have been formed by catastrophic debris landslides . Cape Verde's climate is milder than that of the African mainland because the surrounding sea moderates temperatures on the islands and cold Atlantic currents produce an arid atmosphere around the archipelago. Conversely, the islands do not receive the upwelling (cold streams) that affect the West African coast, so
3431-518: The basic principles of its government. The president is the head of state and is elected by popular vote for a five-year term. The prime minister is the head of government and proposes other ministers and secretaries of state. The prime minister is nominated by the National Assembly and appointed by the president. Members of the National Assembly are elected by popular vote for five-year terms. In 2016, three parties held seats in
3504-473: The basis of the two nations' independence movement. Moving its headquarters to Conakry , Guinea in 1960, the PAIGC began an armed rebellion against Portugal in 1961. Acts of sabotage eventually grew into a war in Portuguese Guinea that pitted 10,000 Soviet Bloc -supported PAIGC soldiers against 35,000 Portuguese and African troops. By 1972, the PAIGC controlled much of Portuguese Guinea despite
3577-412: The city of Mindelo , located on the island of São Vicente , became an important commercial centre during the 19th century. Diplomat Edmund Roberts visited Cape Verde in 1832. Cape Verde was the first stop of Charles Darwin 's voyage with HMS Beagle in 1832. With few natural resources and inadequate sustainable investment from the Portuguese, the citizens grew increasingly discontented with
3650-471: The climate is suitable for the development of dry monsoon forests, and laurel forests . Average temperatures range from 22 °C (72 °F) in February to 27 °C (80.6 °F) in September. Cape Verde is part of the Sahelian semi-arid belt, with nothing like the rainfall levels of nearby West Africa . It rains irregularly between August and October, with frequent brief heavy downpours. A desert
3723-600: The colonial masters, who refused to provide the local authorities with more autonomy. In 1951, Portugal changed Cape Verde's status from a colony to an overseas province in an attempt to blunt growing nationalism . In 1956, Amílcar Cabral and a group of fellow Cape Verdeans and Guineans organized (in Portuguese Guinea ) the clandestine African Party for the Independence of Guinea and Cape Verde (PAIGC). It demanded improvement in economic, social and political conditions in Cape Verde and Portuguese Guinea and formed
SECTION 50
#17327728964173796-527: The country's official name. Speakers of English have used the name Cape Verde for the archipelago and, since independence in 1975, for the country. In 2013, the Cape Verdean government determined that it would thenceforth use the Portuguese name Cabo Verde for official purposes, including at the United Nations , even when speaking or writing in English. The archipelago of modern-day Cape Verde
3869-441: The early 1990s, Cape Verde has been a stable representative democracy and has remained one of the most developed and democratic countries in Africa. Lacking natural resources, its developing economy is mostly service-oriented, with a growing focus on tourism and foreign investment. Its population of around 596,000 (as of 2022) is of mostly of Sub-Saharan African and minor European heritage, and predominantly Catholic , reflecting
3942-540: The flank of a volcano collapses in a massive landslide) can only trigger the eruption of a very shallow magma chamber . Magma differentiation and thermal expansion also are ineffective as triggers for eruptions from deep magma chambers . In recorded history , explosive eruptions at subduction zone ( convergent-boundary ) volcanoes have posed the greatest hazard to civilizations. Subduction-zone stratovolcanoes, such as Mount St. Helens , Mount Etna and Mount Pinatubo , typically erupt with explosive force because
4015-478: The ground. Volcanic Bombs are associated with Strombolian and Vulcanian eruptions and basaltic lava . Ejection velocities ranging from 200 to 400 m/s have been recorded causing volcanic bombs to be destructive. Lahars (from a Javanese term for volcanic mudflows) are a mixture of volcanic debris and water. Lahars can result from heavy rainfall during or before the eruption or interaction with ice and snow. Meltwater mixes with volcanic debris causing
4088-458: The high population density of the surrounding Metropolitan Naples area (totaling about 3.6 million inhabitants). In addition to potentially affecting the climate, volcanic ash clouds from explosive eruptions pose a serious hazard to aviation . Volcanic ash clouds consist of ash which is made of silt or sand sized pieces of rock, mineral, volcanic glass . Ash grains are jagged, abrasive, and don't dissolve in water. For example, during
4161-421: The humid mountain. Most rainfall precipitation is due to condensation of the ocean mist. In some islands, like Santiago, the wetter climate of the interior and the eastern coast contrasts with the drier one on the south/southwest coast. Praia, on the southeast coast, is the largest city on the island and the largest city and capital of the country. While most of Cape Verde receives little precipitation throughout
4234-504: The island of Kyushu about 40 km (25 mi) east of Nagasaki . Beginning in June, a newly formed lava dome repeatedly collapsed. This generated a pyroclastic flow that flowed down the mountain's slopes at speeds as high as 200 km/h (120 mph). The 1991 eruption of Mount Unzen was one of the worst volcanic disasters in Japan's history, once killing more than 15,000 people in 1792. The eruption of Mount Vesuvius in 79 AD
4307-491: The island of Fogo. The islands lie on a bathymetric swell known as the Cape Verde Rise . The Rise is one of the largest protuberances in the world's oceans, rising 2.2 kilometres (1.4 miles) in a semi-circular region of 1200 km (460 sq mi), associated with a rise of the geoid . Pico do Fogo , the largest active volcano in the region, erupted in 2014. It has an eight-kilometre-diameter (five-mile) caldera ,
4380-535: The landscape is so arid that less than two percent of it is arable. The archipelago can be divided into four broad ecological zones – arid, semiarid, subhumid and humid, according to altitude and average annual rainfall ranging from less than 100 millimetres (3.9 inches) in the arid areas of the coast as in the Deserto de Viana (67 millimetres (2.6 inches) in Sal Rei ) to more than 1,000 millimetres (39 inches) in
4453-467: The legacy of Portuguese rule. A sizeable Cape Verdean diaspora community exists across the world, especially in the United States and Portugal, considerably outnumbering the inhabitants on the islands. Cape Verde is a member state of the African Union . Cape Verde's official language is Portuguese. The recognized national language is Cape Verdean Creole , which is spoken by the vast majority of
SECTION 60
#17327728964174526-445: The majority of the archipelago's total volume. The volcanic and plutonic rocks are distinctly basic; the archipelago is a soda-alkaline petrographic province, with a petrologic succession similar to that found in other Macaronesian islands. Magnetic anomalies identified in the vicinity of the archipelago indicate that the structures forming the islands date back 125–150 million years: the islands themselves date from 8 million (in
4599-556: The population. As of the 2021 census the most populated islands were Santiago , where the capital Praia is located (269,370), São Vicente (74,016), Santo Antão (36,632), Fogo (33,519) and Sal (33,347). The largest cities are Praia (137,868), Mindelo (69,013), Espargos (24,500) and Assomada (21,297). The country is named after the Cap-Vert peninsula, on the Senegalese coast. The name Cap-Vert , in turn, comes from
4672-425: The presence of the Portuguese troops, but the organization did not attempt to disrupt Portuguese control in Cape Verde. Portuguese Guinea declared independence in 1973 and was granted de jure independence in 1974. A budding independence movement — originally led by Amílcar Cabral , assassinated in 1973 — passed on to his half-brother Luís Cabral and culminated in independence for the archipelago in 1975. Following
4745-529: The rim of which is at an elevation of 1,600 metres (5,249 feet) and an interior cone that rises to 2,829 metres (9,281 feet) above sea level . The caldera resulted from subsidence, following the partial evacuation (eruption) of the magma chamber, along a cylindrical column from within the magma chamber (at a depth of 8 kilometres (5 miles)). Extensive salt flats are found on Sal and Maio. On Santiago, Santo Antão, and São Nicolau, arid slopes give way in places to sugarcane fields or banana plantations spread along
4818-412: The size of Mount Pinatubo affected the weather for a few years; with warmer winters and cooler summers observed. A similar phenomenon occurred in the April 1815, the eruption of Mount Tambora on Sumbawa island in Indonesia . The Mount Tambora eruption is recognized as the most powerful eruption in recorded history. Its eruption cloud lowered global temperatures as much as 0.4 to 0.7 °C. In
4891-410: The west) to 20 million years (in the east). The oldest exposed rocks occurred on Maio and the northern peninsula of Santiago and are 128–131 million-year-old pillow lavas. The first stage of volcanism in the islands began in the early Miocene , and reached its peak at the end of this period when the islands reached their maximum sizes. Historical volcanism (within human settlement) has been restricted to
4964-412: The world. The SO 2 in this cloud combined with water (both of volcanic and atmospheric origin) and formed sulfuric acid , blocking a portion of the sunlight from reaching the troposphere . This caused the global temperature to decrease by about 0.4 °C (0.72 °F) from 1992 to 1993. These aerosols caused the ozone layer to reach the lowest concentrations recorded at that time. An eruption
5037-716: The year following the eruption, most of the Northern Hemisphere experienced cooler temperatures during the summer. In the northern hemisphere , 1816 was known as the " Year Without a Summer ". The eruption caused crop failures, food shortages, and floods that killed over 100,000 people across Europe , Asia , and North America . Cape Verde Cape Verde ( / ˈ v ɜːr d ( i )/ , VURD( -ee) ) or Cabo Verde ( / ˌ k ɑː b oʊ ˈ v ɜːr d eɪ / KAH -boh VUR -day , / ˌ k æ b oʊ -/ KAB -oh - , local Portuguese: [ˈkabu ˈveɾdɨ] ), officially
5110-555: The year, the northeastern slopes of high mountains see significant rainfall due to orographic lift, especially in areas far from the sea. In some such areas this precipitation is sufficient to support a rainforest habitat, albeit one significantly affected by the islands' human presence. These umbria areas are identified as cool and moist. Cape Verde lies in the Cape Verde Islands dry forests ecoregion. Western Hemisphere-bound hurricanes often have their early beginnings near
5183-768: Was elected president in August 2011 and re-elected in October 2016. He is also supported by the MpD. In November 2021, Cape Verde opened its first embassy in Nigeria. In 2013 then United States President Barack Obama said Cape Verde is "a real success story". Among other achievements, it has been recognized with the following assessments: Cape Verde follows a policy of nonalignment and seeks cooperative relations with all friendly states. Angola, Brazil, China, Libya, Cuba, France, Guinea-Bissau, Germany, Italy, Portugal, Spain, São Tomé and Príncipe, Senegal, Russia, Luxembourg, and
5256-535: Was formed approximately 40–50 million years ago during the Eocene era. Before the arrival of Europeans, the Cape Verde Islands were uninhabited. They were discovered by Genoese and Portuguese navigators around 1456. According to Portuguese official records, the first discoveries were made by Genoa-born António de Noli , who was afterwards appointed governor of Cape Verde by the Portuguese king Afonso V . Other navigators mentioned as contributing to discoveries on
5329-554: Was sworn in as the new President of Cape Verde . On 2 February 2024, Cape Verde became the third African country to be free of malaria . Cape Verde is a stable semi-presidential representative democratic republic . In 2020 it was the most democratic nation in Africa , ranking 2023 as 45th in the world, according to the electoral democracy score of the V-Dem Democracy indices . The constitution – adopted in 1980 and revised in 1992, 1995 and 1999 – defines
#416583