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Furnas Do Cavalum
The Furnas do Cavalum (Caves of Cavalum in English) are a group of four caves located in Machico Machico () is a municipality, parish and city in the southeast part of the island of Madeira, in the Autonomous Region of Madeira. The easternmost municipality on the island, it is also the third-most populous area with a population of 21,828 in ..., Madeira. Named after a local legend about a demon called Cavalum, who was imprisoned in the cave. These lava tubes are of great importance allowing a view on the volcanic history of the now inactive island of Madeira, they have also biologic importance as there are several troglobionts living in the cave, including crustaceans, spiders and flies. At least fourteen invertebrates live in these tubes and at least three of them are endemic on Madeira island, one of them exists only in this cave. Furnas do Cavalum are also part of the cultural heritage of the islanders, as numerous legends are told about the caves. Despite the stories ab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madeira
) , anthem = ( en, "Anthem of the Autonomous Region of Madeira") , song_type = Regional anthem , image_map=EU-Portugal_with_Madeira_circled.svg , map_alt=Location of Madeira , map_caption=Location of Madeira , subdivision_type=Sovereign state , subdivision_name=Portugal , established_title=Discovery , established_date=1418-1419 , established_title2=Settlement , established_date2=c. 1425 , established_title3=Autonomous status , established_date3=30 April 1976 , named_for = en, wood ( pt, madeira) , official_languages=Portuguese , demonym= en, Madeiran ( pt, Madeirense) , capital = Funchal , government_type=Autonomous Region , leader_title1=Representative of the Republic , leader_name1=Irineu Barreto , leader_title2=President of the Regional Government of Madeira , leader_name2=Miguel Albuquerque , leader_title3=President of the Legislative Assembly , leader_name3=José Manuel Rodrigues , legislature= Legislative Assembly , national_representation=National ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machico
Machico () is a municipality, parish and city in the southeast part of the island of Madeira, in the Autonomous Region of Madeira. The easternmost municipality on the island, it is also the third-most populous area with a population of 21,828 in 2011. The town, proper, had a population of 10,894 in 2001. History In calm waters of early after, on 1 July 1419, João Gonçalves Zarco and Tristão Vaz Teixeira disembarked on the beach of Machico, beginning the era of Portuguese discoveries. On the beach a Mass of thanksgiving was celebrated by Franciscan priests on the feast of the Visitation (2 June), an image of which accompanied the expedition. Many hypotheses have developed as to the origin of the name of the municipality. The most remembered, and not the least disputed, comes from the romanticized legend of the English lovers Robert Machim and Anne d'Arfet. As the legend explains, the two lovers escaped from England (where their love was forbidden and condemned by the Churc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basalt
Basalt (; ) is an aphanite, aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the planetary surface, surface of a terrestrial planet, rocky planet or natural satellite, moon. More than 90% of all volcanic rock on Earth is basalt. Rapid-cooling, fine-grained basalt is chemically equivalent to slow-cooling, coarse-grained gabbro. The eruption of basalt lava is observed by geologists at about 20 volcanoes per year. Basalt is also an important rock type on other planetary bodies in the Solar System. For example, the bulk of the plains of volcanism on Venus, Venus, which cover ~80% of the surface, are basaltic; the lunar mare, lunar maria are plains of flood-basaltic lava flows; and basalt is a common rock on the surface of Mars. Molten basalt lava has a low viscosity due to its relatively low silica content (between 45% and 52%), resulting in rapidly moving lava flo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portuguese
Portuguese may refer to: * anything of, from, or related to the country and nation of Portugal ** Portuguese cuisine, traditional foods ** Portuguese language, a Romance language *** Portuguese dialects, variants of the Portuguese language ** Portuguese man o' war, a dangerous marine cnidarian that resembles an 18th-century armed sailing ship ** Portuguese people, an ethnic group See also * * ''Sonnets from the Portuguese'' * "A Portuguesa", the national anthem of Portugal * Lusofonia * Lusitania Lusitania (; ) was an ancient Iberian Roman province located where modern Portugal (south of the Douro river) and a portion of western Spain (the present Extremadura and the province of Salamanca) lie. It was named after the Lusitani or Lusita ... * {{disambiguation Language and nationality disambiguation pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lava Tube
A lava tube, or pyroduct, is a natural conduit formed by flowing lava from a volcanic vent that moves beneath the hardened surface of a lava flow. If lava in the tube empties, it will leave a cave. Formation A lava tube is a type of lava cave formed when a low-viscosity lava flow develops a continuous and hard crust, which thickens and forms a roof above the still-flowing lava stream. Tubes form in one of two ways: either by the crusting over of lava channels, or from pāhoehoe flows where the lava is moving under the surface. Lava usually leaves the point of eruption in channels. These channels tend to stay very hot as their surroundings cool. This means they slowly develop walls around them as the surrounding lava cools and/or as the channel melts its way deeper. These channels can get deep enough to crust over, forming an insulating tube that keeps the lava molten and serves as a conduit for the flowing lava. These types of lava tubes tend to be closer to the lava erupt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Troglobiont
Troglofauna are small cave-dwelling animals that have adapted to their dark surroundings. Troglofauna and stygofauna are the two types of subterranean fauna (based on life-history). Both are associated with subterranean environments – troglofauna are associated with caves and spaces above the water table and stygofauna with water. Troglofaunal species include spiders, insects, myriapods and others. Some troglofauna live permanently underground and cannot survive outside the cave environment. Troglofauna adaptations and characteristics include a heightened sense of hearing, touch and smell. Loss of under-used senses is apparent in the lack of pigmentation as well as eyesight in most troglofauna. Troglofauna insects may exhibit a lack of wings and longer appendages. Ecological categories Troglofauna are divided into three main categories based on their ecology: * Troglobionts (or troglobites): species, or populations of species, strictly bound to subterranean habitats. * Troglo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Revolta Da Madeira
The Madeira uprising, also referred to as the Island Revolt or the Revolt of the Deported, was a military uprising against the government of the National Dictatorship (1926–1933) that took place on the island of Madeira Island, Madeira, beginning in the early hours of 4 April 1931. On 8 April the rebellion spread to some islands of the Azores and, on 17 April, reached Portuguese Guinea. There were also attempts at military recruitment in Mozambique and on the island of São Tomé Island, São Tomé, which failed early on. Military mutinies, planned for the continent, never occurred. The rebellious military in the Azores, lacking popular support, surrendered soon without a fight, between 17 and 20 April 1931. In Madeira, where rebels had won popular support, taking advantage of the discontent generated by the government's restrictive economic policy to alleviate Great Depression, the effects of the international crisis of 1929, the uprising was only neutralized on 2 May, with the ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
São Vicente Caves
The São Vicente Caves (Grutas de São Vicente in Portuguese) are caves located in the parish and county of São Vicente, Madeira. Entrance is charged at €8 for adults, but have been closed since March 2020. History These caves were formed around 890,000 years ago from a volcanic eruption in Paul da Serra that ran down to the sea. Thus, the outside, exposed to lower temperatures solidified rapidly while the inner liquid continued to run with many gases, forming a series of lava tubes, which today constitute the caves of São Vicente. They were first discovered in 1885, by local people who informed James Yate Johnson an English naturalist in Madeira who explored the caves further. The caves were opened to the public on 1 of October 1996, being one of the first caves of volcanic origins to be opened to the public in Portugal. See also *Furnas do Cavalum The Furnas do Cavalum (Caves of Cavalum in English) are a group of four caves located in Machico Machico () is a muni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caves Of Madeira
A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called ''exogene'' caves. Caves which extend further underground than the opening is wide are called ''endogene'' caves. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called ''caving'', ''potholing'', or ''spelunking''. Formation types The formation and development of caves is known as '' speleogenesis''; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorgani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanism Of Madeira
Volcanism, vulcanism or volcanicity is the phenomenon of eruption of molten rock (magma) onto the surface of the Earth or a solid-surface planet or moon, where lava, pyroclastics, and volcanic gases erupt through a break in the surface called a vent. It includes all phenomena resulting from and causing magma within the crust or mantle of the body, to rise through the crust and form volcanic rocks on the surface. Magmas, that reach the surface and solidify, form extrusive landforms. Volcanic processes Magma from the mantle or lower crust rises through the crust towards the surface. If magma reaches the surface, its behavior depends on the viscosity of the molten constituent rock. Viscous (thick) magma produces volcanoes characterised by explosive eruptions, while non-viscous (runny) magma produce volcanoes characterised by effusive eruptions pouring large amounts of lava onto the surface. In some cases, rising magma can cool and solidify without reaching the surface. Instead, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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