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79-686: Saint Kitts , officially Saint Christopher , is an island in the West Indies . The west side of the island borders the Caribbean Sea, and the eastern coast faces the Atlantic Ocean . Saint Kitts and the neighbouring island of Nevis constitute one country: the Federation of Saint Kitts and Nevis . Saint Kitts and Nevis are separated by a shallow 3-kilometre (2 mi) channel known as " The Narrows ". Saint Kitts became home to

158-451: A "commuting" distance to an island that has enough resources to be sustainable. The presence of an island is marked by seabirds , differences in cloud and weather patterns, as well as changes in the direction of waves. It is also possible for human populations to have gone extinct on islands, evidenced by explorers finding islands that show evidence of habitation but no life. Not all islands were or are inhabited by maritime cultures. In

237-514: A "rafting event". This phenomenon is known as oceanic dispersal . Tropical storms have the capacity to transport species over great distances. Animals like tortoises can live for weeks without food or water, and are able to survive floating on debris in the sea. One case study showed that in 1995, fifteen iguanas survived a 300 km journey to Anguilla in the Caribbean , an island which no iguana had lived on previously. They survived floating on

316-453: A cryptodome was in the May 1980 eruption of Mount St. Helens , where the explosive eruption began after a landslide caused the side of the volcano to collapse, leading to explosive decompression of the subterranean cryptodome. A lava spine or lava spire is a growth that can form on the top of a lava dome. A lava spine can increase the instability of the underlying lava dome. A recent example of

395-426: A detailed review of 1,288 islands found that they were home to 1,189 highly-threatened vertebrate species, which was 41 percent of the global figure. Coral bleaching is expected to occur with more frequency, threatening marine ecosystems, some of which island economies are dependent on. Some islands that are low-lying may cease to exist given high enough amounts of sea level rise. Tuvalu received media attention for

474-614: A few meters high, and are usually temporary. Changes in the flow speed, water level, and sediment content of the river may effect the rate of fluvial island formation and depletion. Permanent river islands also exist, the largest of which (that is completely inland) is Bananal Island in the Tocantins of Brazil, which has a maximum width of 55 kilometers. Lakes form for a variety of reasons, including glaciers , plate tectonics, and volcanism. Lake islands can form as part of these processes. The field of insular biogeography studies

553-506: A growth of just under 40% in a two-year period. As tourism grows, the demand for vacation property increases in conjunction. Saint Kitts & Nevis also acquires foreign direct investment from their unique citizenship-by-investment programme, outlined in their Citizenship Act of 1984. Interested parties can acquire citizenship if they pass the government's strict background checks and make an investment into an approved real estate development. Purchasers who pass government due diligence and make

632-402: A higher carrying capacity also have more genetic diversity , which promotes speciation . Oceanic islands, ones that have never been connected to shore, are only populated by life that can cross the sea. This means that any animals present on the island had to have flown there, in the case of birds or bats , were carried by such animals, or were carried in a sea current in what is known as

711-617: A lava spine is the spine formed in 1997 at the Soufrière Hills Volcano on Montserrat. Coulées (or coulees) are lava domes that have experienced some flow away from their original position, thus resembling both lava domes and lava flows . The world's largest known dacite flow is the Chao dacite dome complex , a huge coulée flow-dome between two volcanoes in northern Chile . This flow is over 14 kilometres (8.7 mi) long, has obvious flow features like pressure ridges, and

790-477: A loss of almost all the infrastructure in Dominica. Sea level rise and other climate changes can reduce freshwater reserves, resulting in droughts . These risks are expected to decrease the habitability of islands, especially small ones. Beyond risks to human life, plant and animal life are threatened. It has been estimated that almost 50 percent of land species threatened by extinction live on islands. In 2017,

869-403: A mass of uprooted trees from a storm. Plant species are thought to be able to travel great distances of ocean. New Zealand and Australia share 200 native plant species, despite being separated by 1500 km. Continental islands, islands that were at one point connected to a continent, are expected to share a common history of plant and animal life up until the point that the island broke away from

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948-528: A minimum investment of US$ 400,000, into qualifying government-approved real estate, are entitled to apply for citizenship of the Federation of Saint Kitts and Nevis. Many projects are approved under the citizenship-by-investment programme. The country hosts an annual St. Kitts Music Festival . Robert L. Bradshaw International Airport serves Saint Kitts. The Basseterre Ferry Terminal facilitates travel between Saint Kitts and sister island Nevis. The narrow-gauge (30 inches) St. Kitts Scenic Railway circles

1027-837: A minimum. Some islands became host to humans due to a land bridge or a continental island splitting from the mainland. Today, up to 10% of the world's population lives on islands. Islands are popular targets for tourism due to their perceived natural beauty, isolation, and unique cultures. Islands became the target of colonization by Europeans, resulting in the majority of islands in the Pacific being put under European control. Decolonization has resulted in some but not all island nations becoming self-governing , with lasting effects related to industrialisation , invasive species , nuclear weapons testing , and tourism . Islands and island countries are threatened by climate change . Sea level rise threatens to submerge nations such as Maldives ,

1106-743: A minority. Cultural attitudes related to communal ownership of land as well as a lack of individualistic decision-making may make some island cultures less compatible with the global capitalist economy, causing these nations to experience less economic growth. Islands have long been a popular target for tourism , thanks to their unique climates, cultures, and natural beauty. However, islands may suffer from poor transportation connectivity from airplanes and boats and strains on infrastructure from tourist activity. Islands in colder climates often rely on seasonal tourists seeking to enjoy nature or local cultures, and may only be one aspect of an island's economy. In contrast, tourism on tropical islands can often make up

1185-613: A permanent caisson , a steel or concrete structure built in a closed loop and then filled with sand. Some modern islands have been constructed by pouring millions of tons of sand into the sea, such as with Pearl Island in Qatar or the Palm Islands in Dubai. These islands are usually created for real estate development , and are sold for private ownership or construction of housing. Offshore oil platforms have also been described as

1264-524: A phenomenon where new oceanic crust is formed, pushing away older crust. Islands sitting on the continental shelf may be called continental islands. Other islands, like those that make up New Zealand , are what remains of continents that shrank and sunk beneath the sea. It was estimated that Zealandia , the continent-like area of crust that New Zealand sits on, has had 93% of its original surface area submerged. Some islands are formed when coral reefs grow on volcanic islands that have submerged beneath

1343-506: A population of about 40,000, the majority of whom are of African descent . The primary language is English , with a literacy rate of approximately 98%. Residents call themselves Kittitians . The island is named after the Christian Saint Christopher ; "Kit" was formerly a common diminutive of "Christopher". Brimstone Hill Fortress National Park , a UNESCO World Heritage Site , is the largest fortress ever built in

1422-423: A press conference publicizing the ongoing submerging of the island country. Tuvalu signed a cooperation agreement with Australia agreeing to annually allow 280 of its citizens to become permanent residents of Australia. The Marshall Islands, a country of 1,156 islands, have also been identified as a country that may be existentially threatened by rising seas. Increasing intensity of tropical storms also increases

1501-483: A priority target of conservation efforts, to prevent the extinction of these species. Despite high levels of endemism, the total species richness , the total number of unique species in a region, is lower on islands than on mainlands. The level of species richness on islands is proportional to the area of that island, a phenomenon known as the species-area relationship . This is because larger areas have more resources and thus can support more organisms. Populations with

1580-411: A restricted set of natural resources. However, these nations control some of the largest fisheries in the world, deposits of copper , gold , and nickel , as well as oil deposits . The natural beauty of island nations also makes them a magnet for tourism . Islands also have geopolitical value for naval bases , weapons testing , and general territorial control. One such example is French Polynesia ,

1659-452: A rough indicator of magma supply , but it shows no systematic relationship to the timing or characteristics of lava dome explosions. Gravitational collapse of a lava dome can produce a block and ash flow . A cryptodome (from the Greek κρυπτός , kryptos , "hidden, secret") is a dome-shaped structure created by accumulation of viscous magma at a shallow depth. One example of

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1738-476: A selection pressure for smaller animals that require less food. Having fewer predators would mean these animals did not need not be large to survive. Charles Darwin formulated the theory of natural selection through the study of island ecology. The species he observed on the Galápagos Islands , including tanager birds, contributed to his understanding of how evolution works. He first traveled to

1817-509: A specific property known as adaptive radiation . In this process, a species that arrives on a group of islands rapidly becomes more diverse over time, splitting off into new species or subspecies. A species that reaches an island ecosystem may face little competition for resources, or may find that the resources that they found in their previous habitat are not available. These factors together result in individual evolutionary branches with different means of survival. The classical example of this

1896-414: A territory that receives substantial military expenditure and aid from France. Since the first discoveries of Polynesian, Micronesian , and other islands by Westerners, these nations have been the subject of colonization. Islands were the target of Christian missionaries . These missionaries faced resistance, but found success when some local chiefs used European support to centralize power. Beginning in

1975-519: A tree that is present in Australia, New Zealand, parts of South American, and New Guinea, places that today are geographically distant. A possible explanation for this phenomenon is that these landmasses were once all part of the continent Gondwana and separated by tectonic drift. However, there are competing theories that suggest this species may have reached faraway places by way of oceanic dispersal. Species that colonize island archipelagos exhibit

2054-616: A type of island. Some atolls have been covered in concrete to create artificial islands for military purposes, such as those created by China in the South China Sea . These atolls were previously low-tide elevations, landmasses that are only above water during low tide . The United Nations Convention on the Law of the Sea indicates that these islands may not have the same legal status as a naturally occurring island, and as such may not confer

2133-515: Is Darwin's finches , a group of up to fifteen tanager species that are endemic to the Galápagos Islands. These birds evolved different beaks in order to eat different kinds of food available on the islands. The large ground finch has a large bill used to crack seeds and eat fruit. The Genovesa cactus finch prefers cacti as a food source, and has a beak adapted for removing pulp and flowers from cacti. The green warbler-finch (in

2212-598: Is actually a cognate of Swedish ö and German Aue , and more distantly related to Latin aqua (water). The spelling of the word was modified in the 15th century because of a false etymology caused by an association with the Old French loanword isle , which itself comes from the Latin word insula . Islands often are found in archipelagos or island chains, which are collections of islands. These chains are thought to form from volcanic hotspots , areas of

2291-555: Is coalesced with Farm Flat. Brimstone Hill is noted for having limestone on its flanks, which was dragged upward with the formation of the dome 44,400 years ago. Mt. Liamuiga partially overlays the Middle Range to the southeast. This Middle Range is another stratovolcano 976 m in height with a small summit crater containing a lake. Next in line is the 900 metres (3,000 ft) South East Range, 1 Myr in age, consisting of four peaks. Ottley's dome and Monkey Hill dome are on

2370-503: Is the apple snail , initially introduced to the U.S. by aquarium owners. It has since been transported by hurricanes across the Gulf Coast and neighboring islands. These species compete for resources with native animals, and some may grow so densely that they displace other forms of existing life. For hundreds of years, islands have been created through land reclamation . One of the first recorded instances of this when people of

2449-634: Is the giant tortoise of the Seychelles , though it is unknown if it grew in size before or after reaching the island. Larger animals such as the hippopotamus tend to become smaller, such as in the case of the pygmy hippopotamus . This is known as insular dwarfism . In the case of smaller animals, it has been hypothesized that animals on islands may have fewer predators and competitors, resulting in selection pressure towards larger animals. Larger animals may exhaust food resources quickly due to their size, causing malnutrition in their young, resulting in

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2528-479: The Atlantic Ocean in search of an alternate route to the East Indies . These historians theorize that successful explorers were rewarded with recognition and wealth, leading others to attempt possibly dangerous expeditions to discover more islands, usually with poor results. About 10% of the world's population lives on islands. The study of the culture of islands is known as island studies . The interest in

2607-577: The Marshall Islands , and Tuvalu completely. Increases in the frequency and intensity of tropical cyclones can cause widespread destruction of infrastructure and animal habitats. Species that live exclusively on islands are some of those most threatened by extinction . An island is an area of land surrounded by water on all sides that is distinct from a continent. There is no standard of size that distinguishes islands and continents . Continents have an accepted geological definition – they are

2686-507: The Polynesians . Many of the previous island settlements required traveling distances of less than 100 km (62 mi), whereas Polynesians may have traveled 2,000–3,200 km (1,200–2,000 mi) to settle islands such as Tahiti . They would send navigators to sail the ocean without the aid of navigational instruments to discover new islands for settlement. Between 1100 and 800 BC, Polynesians sailed East from New Guinea and

2765-891: The Solomon Islands and reached the islands that make up the modern-day Fiji and Samoa . The furthest extent of this migration would be Easter Island in the East, and New Zealand in the South, with New Zealand's first settlements between 1250 and 1300. Historians have sought to understand why some remote islands have always been uninhabited, while others, especially in the Pacific Ocean , have long been populated by humans. Generally, larger islands are more likely to be able to sustain humans and thus are more likely to have been settled. Small islands that cannot sustain populations on their own can still be habitable if they are within

2844-499: The Solomon Islands created eighty such islands by piling coral and rock in the Lau Lagoon . One traditional way of constructing islands is with the use of a revetment . Sandbags or stones are dropped with a barge into the sea to bring the land level slightly out of the water. The island area is then filled with sand or gravel, followed by a construction of this revetment to hold it together. Islands have also been constructed with

2923-503: The University of Medicine and Health Sciences . The capital of the two-island nation, and also its largest port, is the town of Basseterre on Saint Kitts. There is a modern facility for handling large cruise ships there. A ring road goes around the perimeter of the island with smaller roads branching off it; the interior of the island is too steep for habitation. Saint Kitts is 10 km (6.2 mi) away from Sint Eustatius to

3002-414: The lithosphere where the mantle is hotter than the surrounding area. These hotspots would give rise to volcanoes whose lava would form the rock the islands are made of. For some islands, the movement of tectonic plates above stationary hotspots would form islands in a linear chain, with the islands further away from the hotspot being progressively older and more eroded , before disappearing under

3081-450: The sea as a natural barrier to the introduction of new species, causing the species that do reach the island to evolve in isolation. Continental islands share animal and plant life with the continent they split from. Depending on how long ago the continental island formed, the life on that island may have diverged greatly from the mainland due to natural selection . Humans have lived on and traveled between islands for thousands of years at

3160-537: The 16th century, European states placed most of Oceania in under colonial administration . Pohnpei was colonized by Spain as early as 1526. It changed hands from Germany to Japan to the United States before joining the Federated States of Micronesia in 1982, maintaining a "free association" status with the U.S. Guam was a Spanish territory until 1898, and now is a unincorporated territory of

3239-559: The Eastern Caribbean. The island of Saint Kitts is home to the Warner Park Cricket Stadium , which was used to host 2007 Cricket World Cup matches. This made Saint Kitts and Nevis the smallest nation to ever host a World Cup event . Saint Kitts is also home to several institutions of higher education, including Ross University School of Veterinary Medicine , Windsor University School of Medicine , and

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3318-509: The French on either end. In 1629 , a Spanish force sent to clear the islands of foreign settlement seized St. Kitts. The English settlement was rebuilt following the 1630 peace between England and Spain. The island alternated repeatedly between English (then British ) and French control during the 17th and 18th centuries, as one power took the whole island, only to have it switch hands due to treaties or military action. Actions included

3397-511: The Hawaiian islands being home to irrigated fields of taro, whereas in some islands, like Tahiti, breadfruit was more widely cultivated and fermented in order to preserve it. There is archeological evidence that Canary Islanders would chew the roots of ferns for sustenance, a practice that wore heavily on their molars . These islanders would also grow barley and raised livestock such as goats . Many island nations have little land and

3476-682: The Origin of Species . The first evidence of humans colonizing islands probably occurred in the Paleolithic era, 100,000 to 200,000 years ago. Reaching the Indonesian islands of Flores and Timor would have required crossing distances of water of at least 29 km (18 mi). Some islands, such as Honshu , were probably connected to the mainland with a land bridge that allowed humans to colonize it before it became an island. The first people to colonize distant oceanic islands were

3555-755: The Siege of Brimstone Hill and the Battle of Saint Kitts . Parts of the island were heavily fortified, as exemplified by the UNESCO World Heritage Site at Brimstone Hill and the now-crumbling Fort Charles . Since 1783, Saint Kitts has been affiliated with the Kingdom of Great Britain , which became the United Kingdom . The island originally produced tobacco , but farmers switched to sugarcane in 1640 because of stiff competition from

3634-481: The U.S. The decolonization era saw many island states achieve independence or some form of self-governance . Nuclear weapons testing on the Marshall Islands left many atolls destroyed or uninhabitable, causing the forced displacement of people from their home islands as well as increases in cancer rates due to radiation . Colonization has resulted in a decline of observance of traditional cultural practices in places such as Hawaii, where Native Hawaiians are now

3713-851: The archipelago from the banks of the Orinoco River in Venezuela . Around 800 AD, they were replaced by the Igneri people, members of the Arawak group. Around 1300 AD, the Kalinago , or Carib people arrived on the islands. These agriculturalists quickly dispersed the Igneri, and forced them northwards to the Greater Antilles . They named Saint Kitts "Liamuiga" meaning "fertile island", and would likely have expanded further north if not for

3792-463: The arrival of Europeans. A Spanish expedition under Christopher Columbus arrived and claimed the island for Spain in 1493. The first English colony was established in 1623, followed by a French colony in 1625. The English and French briefly united to pre-empt a Kalinago ambush. They massacred the local Kalinago , and then partitioned the island, with the English colonists in the middle and

3871-425: The colony of Virginia . The labour-intensive cultivation of sugar cane was the reason for the large-scale importation of African slaves . The importation began almost immediately upon the arrival of Europeans to the region even though sugarcane wasn't cultivated for another two hundred years on the island, leading some to discredit the earliest claims of imported African labour. The purchasing of enslaved Africans

3950-406: The continent. For example, the presence of freshwater fish on an island surrounded by ocean would indicate that it once was attached to a continent, since these fish cannot traverse the ocean on their own. Over the course of time, evolution and extinction changes the nature of animal life on a continental island, but only once it splits from the mainland. An example is that of the southern beech ,

4029-451: The deposition of sediment by waves . These islands erode and grow as the wind and waves shift. Barrier islands have the effect of protecting coastal areas from severe weather because they absorb some of the energy of large waves before they can reach the shore. A fluvial island is an island that forms from the erosion and sedimentation of debris in rivers; almost all rivers have some form of fluvial islands. These islands may only be

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4108-479: The dismay of the Nevisians and Anguillans. Anguilla left this arrangement in 1971, after an armed raid on Saint Kitts in 1967. Sugar production continued to dominate the local economy until 2005, when, after 365 years of having a monoculture , the government closed the sugar industry . This decision was made because of huge losses and European Union plans to greatly cut sugar prices. For purposes of governing,

4187-426: The distances and frequency with which invasive species may be transported to islands. Floodwaters from these storms may also wash plants further inland than they would travel on their own, introducing them to new habitats. Agriculture and trade also have introduced non-native life to islands. These processes result in an introduction of invasive species to ecosystems that are especially small and fragile. One example

4266-400: The ecological processes that take place on islands, with a focus on what factors effect the evolution , extinction , and richness of species. Scientists often study islands as an isolated model of how the process of natural selection takes place. Island ecology studies organisms on islands and their environment. It has yielded important insights for its parent field of ecology since

4345-708: The enlargement of a lava dome due to the influx of magma into the dome interior, and the latter refers to discrete lobes of lava emplaced upon the surface of the dome. It is the high viscosity of the lava that prevents it from flowing far from the vent from which it extrudes, creating a dome-like shape of sticky lava that then cools slowly in-situ. Spines and lava flows are common extrusive products of lava domes. Domes may reach heights of several hundred meters, and can grow slowly and steadily for months (e.g. Unzen volcano), years (e.g. Soufrière Hills volcano), or even centuries (e.g. Mount Merapi volcano). The sides of these structures are composed of unstable rock debris. Due to

4424-749: The first Caribbean British and French colonies in the mid-1620s. Along with the island of Nevis, Saint Kitts was a member of the British West Indies until gaining independence on 19 September 1983. The island is one of the Leeward Islands in the Lesser Antilles . It is situated about 2,100 km (1,300 mi) southeast of Miami , Florida , US. The land area of Saint Kitts is about 168 km (65 sq mi), being approximately 29 km (18 mi) long and on average about 8 km (5.0 mi) across. Saint Kitts has

4503-407: The flanks, while the older volcanoes represented by Canada Hills, and Conaree Hills lie past the airport and Basseterre on the southeast flank. The Salt Dome Peninsula contains the oldest volcanic deposits, 2.3–2.77 Myr in age, consisting of at least nine Pelean domes rising up to 319 metres (1,047 ft) in height, which includes Williams Hill and St. Anthony's Peak . During the last ice age ,

4582-502: The habit of true warbler species) consumes spiders and insects that live on plants. Other examples of this phenomenon exist worldwide, including in Hawaii and Madagascar, and are not limited to island ecosystems. Species endemic to islands show a common evolutionary trajectory. Foster's rule (also known as the island rule), states that small mammals such as rodents evolve to become larger, known as island gigantism . One such example

4661-474: The industry in 2005. Tourism is a major and growing source of income to the island, although the number and density of resorts is less than on many other Caribbean islands. Transportation , non-sugar agriculture, manufacturing and construction are the other growing sectors of the economy. Saint Kitts is dependent on tourism to drive its economy. Tourism has been increasing since 1978. In 2009, there were 587,479 arrivals to Saint Kitts compared to 379,473 in 2007,

4740-425: The intermittent buildup of gas pressure , erupting domes can often experience episodes of explosive eruption over time. If part of a lava dome collapses and exposes pressurized magma, pyroclastic flows can be produced. Other hazards associated with lava domes are the destruction of property from lava flows , forest fires , and lahars triggered from re-mobilization of loose ash and debris. Lava domes are one of

4819-487: The island and offers passenger service from its headquarters near the airport, although the service is geared more for tourists than as day-to-day transportation for residents. Built between 1912 and 1926 to transport sugar cane from farms to the sugar factory in Basseterre, since 2003 the railway has offered a 3.5-hour, 30-mile circle tour of the island on specially designed double-decker open-air coaches, with 12 miles of

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4898-543: The island is divided into nine parishes : Saint Kitts & Nevis uses the Eastern Caribbean dollar , which maintains a fixed exchange rate of 2.7-to-one with the United States dollar . The US dollar is almost as widely accepted on the island as the Eastern Caribbean dollar. For hundreds of years, Saint Kitts operated as a sugar monoculture , but due to decreasing profitability, the government closed

4977-457: The islands as a naturalist on HMS Beagle in 1835, as part of a five-year circumnavigation of Earth. He wrote that "the different islands to a considerable extent are inhabited by a different set of beings". Through the study of the finches and other animals he realized that organisms survive by changing to adapt to their habitat. It would be over twenty years before he published his theories in On

5056-643: The largest landmass of a particular tectonic plate . Islands can occur in any body of water, including lakes , rivers , seas . Low-tide elevations , areas of land that are not above the surface during a high tide , are generally not considered islands. Islands that have been bridged or otherwise joined to a mainland with land reclamation are sometimes considered "de-islanded", but not in every case. The word island derives from Middle English iland , from Old English igland (from ig or ieg , similarly meaning 'island' when used independently, and -land carrying its contemporary meaning. Old English ieg

5135-404: The mainland, they had no need for boats. The motivation for island exploration has been the subject of research and debate. Some early historians previously argued that early island colonization was unintentional, perhaps by a raft being swept out to sea. Others compare the motivations of Polynesian and similar explorers with those of Christopher Columbus , the explorer who sailed westward over

5214-589: The majority of the local economy and built environment . These islands sometimes also require consistent foreign aid on top of tourism in order to ensure economic growth. This reliance can result in social inequality and environmental degradation . During tourism downturns, these economies struggle to make up the lost inflow of cash with other industries. Climate change threatens human development on islands due to sea level rise , more dangerous tropical cyclones , coral bleaching , and an increase in invasive species . For example, in 2017 Hurricane Maria caused

5293-678: The north and 3 km (1.9 mi) from Nevis to the south. St. Kitts has three distinct groups of volcanic peaks: the North West or Mount Misery Range; the Middle or Verchilds Range and the South East or Olivees Range. The highest peak is Mount Liamuiga, formerly Mount Misery, a dormant volcano 1,156 metres (3,793 ft) high. The youngest volcanic centre is Mt. Liamuiga , 5 kilometres (3.1 mi) in diameter and rising to an elevation of 1,155 metres (3,789 ft). Its last eruption

5372-529: The past, some societies were found to have lost their seafaring ability over time, such as the case of the Canary Islands , which were occupied by an indigenous people since the island's first discovery in the first century until being conquered by the Spanish Empire in 1496. It has been hypothesized that since the inhabitants had little incentive for trade and had little to any contact with

5451-567: The principal structural features of many stratovolcanoes worldwide. Lava domes are prone to unusually dangerous explosions since they can contain rhyolitic silica -rich lava. Characteristics of lava dome eruptions include shallow, long-period and hybrid seismicity , which is attributed to excess fluid pressures in the contributing vent chamber. Other characteristics of lava domes include their hemispherical dome shape, cycles of dome growth over long periods, and sudden onsets of violent explosive activity. The average rate of dome growth may be used as

5530-756: The same legal rights. Lava dome Existence of lava domes has been suggested for some domed structures on the Moon , Venus , and Mars , e.g. the Martian surface in the western part of Arcadia Planitia and within Terra Sirenum . Lava domes evolve unpredictably, due to non-linear dynamics caused by crystallization and outgassing of the highly viscous lava in the dome's conduit . Domes undergo various processes such as growth, collapse, solidification and erosion . Lava domes grow by endogenic dome growth or exogenic dome growth. The former implies

5609-789: The sea entirely. An example is the Hawaiian Islands , with the oldest island being 25 million years old, and the youngest, Hawaii , still being an active volcano . However, not all island chains are formed this way. Some may be formed all at once by fractures in the tectonic plates themselves, simultaneously creating multiple islands. One supporting piece of evidence is that of the Line Islands , which are all estimated to be 8 million years old, rather than being different ages. Other island chains form due to being separated from existing continents. The Japanese archipelago may have been separated from Eurasia due to seafloor spreading ,

5688-465: The sea level was up to 91 metres (300 ft) lower and St. Kitts and Nevis were one island along with Saba and Sint Eustatius (also known as Statia). St. Kitts was originally settled by pre-agricultural, pre-ceramic "Archaic people", who migrated south down the archipelago from Florida. In a few hundred years they disappeared, to be replaced by the ceramic -using and agriculturalist Saladoid people around 100 BC, who migrated to St. Kitts north up

5767-549: The study of islands is due to their unique cultures and natural environments that differ from mainland cultures. This is for a few reasons: First, the obvious political and geographic isolation from mainland cultures. Second, unique restraints on resources and ecology creating marine-focused cultures with a focus on fishing and sailing. Third, a lasting historical and political significance of islands. The Polynesian diet got most of its protein from fishing. Polynesians were known to fish close to shore, as well as in deep water. It

5846-450: The surface. When these coral islands encircle a central lagoon , the island is known as an atoll . The formation of reefs and islands related to those reefs is aided by the buildup of sediment in shallow patches of water. In some cases, tectonic movements lifting a reef out of the water by as little as 1 meter can cause sediment to accumulate and an island to form. Barrier islands are long, sandy bars that form along shorelines due to

5925-438: The time of Charles Darwin . In biology, endemism is defined as the phenomenon where species or genus is only found in a certain geographical area. Islands isolate land organisms from others with water, and isolate aquatic organisms living on them with land. Island ecosystems have the highest rates of endemism globally. This means that islands contribute heavily to global biodiversity . Areas with high lives of biodiversity are

6004-835: The trip being by bus. Saint Kitts is or was the residence of: Island An island or isle is a piece of land, distinct from a continent, completely surrounded by water. There are continental islands, which were formed by being split from a continent by plate tectonics , and oceanic islands, which have never been part of a continent. Oceanic islands can be formed from volcanic activity, grow into atolls from coral reefs , and form from sediment along shorelines, creating barrier islands . River islands can also form from sediment and debris in rivers. Artificial islands are those made by humans, including small rocky outcroppings built out of lagoons and large-scale land reclamation projects used for development. Islands are host to diverse plant and animal life. Oceanic islands have

6083-502: Was 1,620 years ago, corresponding with the Steel Dust series of pyroclastic deposits on the western flank. The Mansion Series of pyroclastic deposits and andesite with basalt layers occur on the northern flank, along with mudflows . This volcano has a crater 900 metres (3,000 ft) wide and 244 metres (801 ft) deep, plus two distinct parasitic domes consisting primarily of andesite , Brimstone Hill and Sandy Point Hill which

6162-573: Was outlawed in the British Empire by an Act of Parliament in 1807. Slavery was abolished by an Act of Parliament which became law on 1 August 1834. This emancipation was followed by four years of forced enslavement, put in place to protect the "planters" (plantation owners) from losing their free labour force. 1 August is now celebrated as a public holiday and is called Emancipation Day . In 1883, Saint Kitts, Nevis , and Anguilla were all linked under one presidency, located on Saint Kitts, to

6241-470: Was reported that Rapa Nui people were known to fish as far as 500 km (310 mi) from shore at coral reefs. Spear , line , and net fishing were all used, to catch tuna as well as sharks and stingrays . Island cultures also cultivate native and non-native crops. Polynesians grew the native yam , taro , breadfruit , banana , coconut and other fruits and vegetables. Different island climates made different resources more important, such as

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