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Qualibou
Qualibou, also known as the Soufrière Volcanic Center, is a 3.5 X 5 km-wide caldera on the island of Saint Lucia that formed between 32,000 and 39,000 years ago. This eruption also formed the Choiseul Tuff which covers the southeastern portion of the island. The Pitons are two large lava domes that formed 200 to 300,000 years ago, before the formation of the caldera; ever since then, other domes have filled the caldera floor. There was a phreatic eruption in 1766 that deposited ash over a wide area. Sulfur Springs is an active geothermal area located roughly in the center of the caldera. In 1990, 1999 and 2000 there were shallow volcanic earthquakes located 6 km ESE of the caldera. Gallery Image:Sulphur_Springs_2003.jpg, Sulphur Springs Mineral springs are naturally occurring springs that produces hard water, water that contains dissolved minerals. Salts, sulfur compounds, and gases are among the substances that can be dissolved in the spring water dur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Lucia
Saint Lucia ( acf, Sent Lisi, french: Sainte-Lucie) is an island country of the West Indies in the eastern Caribbean. The island was previously called Iouanalao and later Hewanorra, names given by the native Arawaks and Caribs, two Amerindian peoples. Part of the Windward Islands of the Lesser Antilles, it is located north/northeast of the island of Saint Vincent (Antilles), Saint Vincent, northwest of Barbados and south of Martinique. It covers a land area of with an estimated population of over 180,000 people as of 2022. The national capital is the city of Castries. The first proven inhabitants of the island, the Arawaks, are believed to have first settled in AD 200–400. Around 800 AD, the island would be taken over by the Kalinago. The French were the first Europeans to settle on the island, and they signed a treaty with the native Caribs in 1660. England took control of the island in 1663. In ensuing years, England and France fought 14 times for control of the island, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soufrière, Saint Lucia
Soufrière is a town on the West Coast of Saint Lucia, in the eastern Caribbean Sea. The town and the surrounding district has a population of 7,935. It was colonized by the French and was the original capital of the island. History French colonizers built large estates in Soufrière, and their descendants still live in the area. The French Revolution of 1789 resulted in many Royalists being executed and the enslaved Africans were released from enslavement. However, Napoleon reintroduced slavery when he came to power. The British invaded St Lucia shortly afterwards, but the enslaved Africans and French deserters fought them in a guerrilla campaign until 1803 when they were defeated and St Lucia became a British colony. Also, during that time, Castries became the capital of St Lucia. Over the years, Soufrière has had to deal with hurricanes in 1780, 1817, 1831, 1898 and 1980, a major fire in 1955 and an earthquake in 1991. Many of these events have resulted in the town being r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Gimie
Mount Gimie is the tallest mountain on the island of Saint Lucia. It is located in the Canries District on the west side of Saint Lucia. The mountain's peak reaches . It is covered by lush tropical rainforest and was formed as the result of intense volcanic activity 200,000 to 300,000 years ago. Mount Gimie is still volcanic and so are many other of the Pitons (a couple of volcanic plugs in which Mount Gimie belongs). References Mountains of Saint Lucia Highest points of countries Volcanoes of Saint Lucia {{SaintLucia-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caribbean
The Caribbean (, ) ( es, El Caribe; french: la Caraïbe; ht, Karayib; nl, De Caraïben) is a region of the Americas that consists of the Caribbean Sea, its islands (some surrounded by the Caribbean Sea and some bordering both the Caribbean Sea and the North Atlantic Ocean) and the surrounding coasts. The region is southeast of the Gulf of Mexico and the North American mainland, east of Central America, and north of South America. Situated largely on the Caribbean Plate, the region has more than 700 islands, islets, reefs and cays (see the list of Caribbean islands). Island arcs delineate the eastern and northern edges of the Caribbean Sea: The Greater Antilles and the Lucayan Archipelago on the north and the Lesser Antilles and the on the south and east (which includes the Leeward Antilles). They form the West Indies with the nearby Lucayan Archipelago (the Bahamas and Turks and Caicos Islands), which are considered to be part of the Caribbean despite not bordering the Caribbe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caldera
A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano eruption. When large volumes of magma are erupted over a short time, structural support for the rock above the magma chamber is gone. The ground surface then collapses into the emptied or partially emptied magma chamber, leaving a large depression at the surface (from one to dozens of kilometers in diameter). Although sometimes described as a Volcanic crater, crater, the feature is actually a type of sinkhole, as it is formed through subsidence and collapse rather than an explosion or impact. Compared to the thousands of volcanic eruptions that occur each century, the formation of a caldera is a rare event, occurring only a few times per century. Only seven caldera-forming collapses are known to have occurred between 1911 and 2016. More recently, a caldera collapse occurred at Kīlauea, Hawaii in 2018. Etymology The term ''caldera'' comes from Spanish language, S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phreatic Eruption
A phreatic eruption, also called a phreatic explosion, ultravulcanian eruption or steam-blast eruption, occurs when magma heats ground water or surface water. The extreme temperature of the magma (anywhere from ) causes near-instantaneous evaporation of water to steam, resulting in an explosion of steam, water, ash, rock, and volcanic bombs. At Mount St. Helens in Washington state, hundreds of steam explosions preceded the 1980 Plinian eruption of the volcano. A less intense geothermal event may result in a mud volcano. Phreatic eruptions typically include steam and rock fragments; the inclusion of liquid lava is unusual. The temperature of the fragments can range from cold to incandescent. If molten magma is included, volcanologists classify the event as a phreatomagmatic eruption. These eruptions occasionally create broad, low-relief craters called '' maars''. Phreatic explosions can be accompanied by carbon dioxide or hydrogen sulfide gas-emissions. Carbon dioxide c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulphur Springs, Saint Lucia
Sulphur Springs is a geothermal field on the island of Saint Lucia. It is located to the southwest in the district of Soufriere, a name given by the French meaning 'sulphur mine', because of the proximity of the town to the site. It is the most popular tourist destination in Saint Lucia, with approximately 200,000 annual patrons to the park, and is known as 'the world's only drive-in volcano'. Mine A sulphur mine was operated by Bennett and Wood from 1836 until 1840. Maximum production occurred in 1836, with 540 tons of sulphur exported. Activity The Sulphur Springs emerged from a weak spot in the crust of the enormous collapsed crater creating an upheaval of lava approximately 300,000 years ago. The most recent volcanic eruption from the Sulphur Springs, recorded as a minor explosion, occurred in 1776. Springs The water located at the center of the springs boils at roughly 212 Fahrenheit (100 Celsius) creating large plumes of steam. The water coming out of the spring is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calderas Of North America
A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano eruption. When large volumes of magma are erupted over a short time, structural support for the rock above the magma chamber is gone. The ground surface then collapses into the emptied or partially emptied magma chamber, leaving a large depression at the surface (from one to dozens of kilometers in diameter). Although sometimes described as a crater, the feature is actually a type of sinkhole, as it is formed through subsidence and collapse rather than an explosion or impact. Compared to the thousands of volcanic eruptions that occur each century, the formation of a caldera is a rare event, occurring only a few times per century. Only seven caldera-forming collapses are known to have occurred between 1911 and 2016. More recently, a caldera collapse occurred at Kīlauea, Hawaii in 2018. Etymology The term ''caldera'' comes from Spanish ', and Latin ', meaning "coo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of Saint Lucia
Saint Lucia is one of many small land masses composing the insular group known as the Windward Islands. Unlike large limestone areas such as Florida, Cuba, and the Yucatan Peninsula, or the Bahamas, which is a small island group composed of coral and sand, St. Lucia is a typical Windward Island formation of volcanic rock that came into existence long after much of the region had already been formed. St. Lucia's physical features are notable. Dominated by high peaks and rain forests in the interior, the island is known for the twin peaks of Gros Piton ()and Petit Piton () on the southwestern coast, its soft sandy beaches, and its magnificent natural harbors. Mount Gimie, the highest peak, is located in the central mountain range and rises to above sea level, a contrast that is also evident in the abrupt climatic transition from coastal to inland areas. The steep terrain also accentuates the many rivers that flow from central St. Lucia to the Caribbean. Fertile land holding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
