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List Of Volcanoes In Azores ...
Although there are no active volcanoes in the continental territory of Portugal, apart from geological remnants of ancient volcanism, the Portuguese Atlantic island possessions have a long history of active volcanism. The following is a list of active and extinct volcanoes in the Portuguese territories of the Azores and Madeira. Azores Madeira See also Geology of Madeira References ;Sources * * * {{GeoGroup * Portugal Volcanoes A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanoes
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates whereas the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates. Volcanoes can also form where there is stretching and thinning of the crust's plates, such as in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande rift in North America. Volcanism away from plate boundaries has been postulated to arise from upwelling diapirs from the core–mantle boundary, deep in the Earth. This results in hotspot volcanism, of which the Hawaiian hotspot is an example. Volcanoes are usually not created where two tectonic plates slide pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graciosa Island
Graciosa Island () (literally "graceful" or "enchanting" in Portuguese) is referred to as the ''White Island'', the northernmost of the Central Group of islands in the Azores. The ovular Portuguese island has an area of , a length of and a width of . It is a volcanic island, dominated by a central caldera (the Caldeira) located in the southeast. History In addition to the other islands of the Central Group, Graciosa was explored by Portuguese navigators during the first quarter of the 15th century, although there exist no accounts of the first sighting of the island. May 2, 1450 has frequently been referred to as the date of the island's "discovery", although there exists no documentation to support this date. Paradoxically, it is clear that in 1440, by order of Prince Henry the Navigator, cattle and swine were settled on the island in order to facilitate colonization. Similarly, it is unclear the names of the first settlers to colonize the island, although around 1450 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of Madeira
Madeira began to form more than 100 million years ago in the Early Cretaceous, although most of the island has formed in the last 66 million years of the Cenozoic, particularly in the Miocene and Pliocene. The island is an example of hotspot volcanism, with mainly mafic volcanic and igneous rocks, together with smaller deposits of limestone, lignite and other sediments that record its long-running uplift. Stratigraphy, tectonics and geologic history During the Early Cretaceous, massive sedimentation offshore of Africa built up enough stress on the crust to prompt fissuring and fracturing. Magma ascended to the surface and submarine eruptions began. By the Late Oligocene or Early Miocene, successive undersea eruptions throughout the early Cenozoic had built up enough material for the Madeira archipelago to appear above sea level. The rapid uplift of the island is recorded with offshore limestone deposits, leftover from coral reefs as well as onshore limestone up to 400 meters above s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pico Das Torres
Pico das Torres is the second highest peak on the Atlantic island of Madeira, Portugal Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of ....Madeira Islands Travel Guide It lies roughly midway between the Pico Ruivo and Pico do Arieiro at an elevation of and is only accessible from the trail between these two peaks. References Mountains of Portugal, Torres Geography of Madeira One-thousanders of Portugal, Torres {{Madeira-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pico Ruivo
Pico Ruivo is the highest peak on Madeira Island. It can be reached only by foot, usually either from Pico do Arieiro (3rd highest) after a strenuous hike, or from Achada do Teixeira via a shorter, easier trail. There is an additional trail leading west to Encumeada. The hut just below the summit is now open, and there are water tap and toilets available. Pico Ruivo is high and provides panoramic views of the island from coast to coast, but unpredictable weather conditions can make it quite dangerous. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pico Do Arieiro
Pico do Areeiro (often wrongly written as Pico do Arieiro), at high, is Madeira Island's third highest peak. From the top, visitors can look down on the clouds on most days. The air is fresh and clear and the sun is very bright. On a clear day it is possible to see the neighboring island of , to the northeast. The footpath northwards towards is an important tourist attraction, with a daily average of 1000 tourists trekking on it. The peak has in recent times become popular with cyclists making the ascent from |
Urzelina (volcano)
Urzelina is a civil parish in the municipality of Velas in the Portuguese islands of the Azores. The population in 2011 was 902, in an area of 13.69 km². It is situated near the south coast of the island of São Jorge. It is alternately known as São Mateus, to which the parish was named after its patron saint. History The first settlers reached this coast in the 15th century, but were isolated from Faial. Many of the early homes were built along the coast, on lowlands and flanks of the interior mountain range, interspersed in the forests. The parish received its name owing to the abundance of ''urzela'' (Roccella tinctoria) found by the first explorers and settlers, along its coastal clifftops and which later became a source of an export market, because it was used in dying. Urzela, a species of fungus, was harvested and exported to Flanders and England in the early 15th-16th centuries, thereby supporting the economies of the island, in addition to many of the islands ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lajes Do Pico
Lajes do Pico () is a town and municipality in the central Azores. It is one of three municipalities of the island of Pico. It has 4,342 inhabitants as of 2021, in an area of 155.31 km2. It is bordered by Madalena to the west and by São Roque do Pico to the north. History The first settlement to be established on the southern part of the island of along Penedo Negro, in the cove of Castelete (south of the actual town of Lajes) sometime around 1460. The rough seas at the time only allowed the navigator Fernando Álvares Evangelho to offload at the time, and he and his dog would occupy the land near the ravine (along the western edge of the town) for many years: the ravine of potable water took its name ''Ribeira Fernado Álvares'' from this early colonist. His former residence still remains near the site. When his colleagues arrived later, they disembarked farther east in the area designated ''Santa Cruz das Ribeiras''. A few remain at this site, including Jordão Álvares Car ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Topo Volcano
Topo Volcano (Portuguese: ) is an inactive shield volcano located on Pico Island, Azores. The volcano measures in height and occupies the southernmost area of the island. It is part of the Lajes (or Topo) Volcanic Complex, the oldest volcanic apparatus which gave origin to the island, around 300,000 years ago. The volcano was created by a thick superposition of alternated Pāhoehoe lava flows and thin layers (10%) of pyroclastic material. Its land area is approximately but its total area, accounting for the sea floor and the area that gave rise to the Achada Plateau The Achada Plateau (Portuguese: ) is an extensive volcanic mountain range located on Pico Island, Azores. It is a protected area with many valuable features that characterize the Azorean landscape. It is included in two Natura 2000 sites, one of ..., is estimated to be around . References Mountains of Portugal Volcanoes of Portugal Pico Island One-thousanders of Portugal Geology of the Azores Polygene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabrina Island (Azores)
Sabrina Island ( pt, Ilha Sabrina) was an islet formed during the months of June and July 1811 by a submarine volcanic eruption off the coast of Ponta da Ferraria, São Miguel Island, Azores. The first person to land on the island was Commander James Tillard, captain of the British warship , who hoisted the Union Jack on the island and claimed sovereignty for Great Britain. A diplomatic row with Portugal over the issue ensued, which the island's sinking back into the sea rendered moot. History Formation and discovery Between January and February 1811 a prolonged period of seismic activity affected the settlements to the extreme southeast of São Miguel, in particular in the parishes of Ginetes and Mosteiros. During these months, gases emitted from the ocean around Ponta da Ferraria, but by the end of February they abruptly ceased. New tremors returned in May and June, destroying many homes in Ginetes. Finally on 10 June 1811, in an area about from the original seismic zones an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monaco Bank (volcano)
Monaco Bank is a submarine volcano in the Azores, which last erupted in 1911. See also * List of volcanoes in Azores Although there are no active volcanoes in the continental territory of Portugal, apart from geological remnants of ancient volcanism, the Portuguese Atlantic island possessions have a long history of active volcanism. The following is a list of a ... References Seamounts of the Atlantic Ocean Active volcanoes {{Marine-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caldeira Volcano
The Caldeira Volcano (Portuguese: ) is the highest mountain, massive stratovolcano and the largest geomorphological structure that forms the island of Faial. The mountain's highest point, Cabeço Gordo, reaches above sea level. One of the most notable features of this volcano is its two kilometer wide caldera, that is in depth below the crater rim. History Along the western edge of the Ribeirinha Volcano, the Central Volcanic Complex formed about 410,000 years ago, along with several structures that arose from tectonics. Evidence of this process has not been preserved due to subsistence, but it is generally believed that two formations (an Upper and Lower group) reflecting a geochemical variation that occurred about 16,000 years ago. The Lower group (from 410,000 years ago), was marked by the predominance of a Hawaiian/Strombolian eruptive process, that was composed of basaltic and benmoreitic rocks. The secondary, Upper group, was a highly explosive period (sub-Plinian in ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
