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Zona-de-nuvens. Cloud forest at 500 m a.s.l. on the western slopes of Mount Pico.
Basalt walls, polygonum, lichens, roses and cryptomerias. NE of Candelaria.
(WWF ecoregion PA0403)
Der Pico Viejo gegen Abend. Das schwarze Auswurfmaterial in der Mitte stammt vom letzten Ausbruch am Teide Pico Viejo Komplex, als im Jahr 1798 die Flanke des Pico Viejo aufriss und sich die Narices del Teide (Nasenlöcher des Teide) bildeten.
The Pico Viejo towards evening. The black pyroclastic materials comes from the last eruption in 1798, when the Narices del Teide were originated.
Pico do Papagaio, um ícone do Parque estadual da Serra do Papagaio, Ponto Turístico da cidade de Aiuruoca. Foto: Átila Naddeo
Mount Pico (Portuguese: Montanha do Pico), is a stratovolcano and highest point on the Portuguese island of Pico in the Azores. Further, reaching an altitude of 2,351 metres (7,713 ft) above sea level, it is more than twice the elevation of any other peak in the Azores, and the tallest mountain in Portugal.
History
Historical eruptions of Pico have occurred from vents on its flanks rather than the summit crater. In 1562–64, an eruption on the southeast flank produced lava flows which reached the sea. Another flank eruption in 1718 also produced flows which reached the coast. The most recent eruption occurred in December 1720.
On 29 September 2009 there were reports from local news sources that indicated that a fumarole existing at the pinnacle of the mountain (Piquinho) began emitting volcanic gaes. The region's seismic and volcanological monitoring centre (Portuguese: CIVISA Centro de Informação e Vigilância Sismovulcânica dos Açores) indicated that the phenomenon occurred in the early morning, turning intense and visible in various points throughout the island and from Faial. Although the event resulted from exceptional meteorlogical conditions and was visible in the Central Group, there was no liberation of anomalous volcanic gases and all other parameters fell within norms.
Geology
The landscape of the East Fissural Zone with some escoria cones
The pinnacle of the island and mountain: Pico Piquinho, also known as Pico Pequeno
The pit crater rim of Pico Alto on the summit of PicoMount Pico is part of the Madalena Volcanic Complex, one of three volcanological units that comprise the island of Pico, associated with three historic eruptions in 1562, 1718 and 1720. Current morphology suggests an age dating to the Holocene age, confirmed by radiocarbon dates younger than 6000 years. Structurally, this complex can be subdivided into two other sections: the Pico Volcano and the East Fissural Zone.
Pico is a stratovolcano, with a pit crater on its summit. Pico Alto the round crater about 500 meters (1,600 ft) in diameter and 30 meters deep tops the volcano, with Piquinho (Pico Pequeno) a small volcanic cone rising 70 meters within it to form the true summit. Meanwhile, the East Fissural Zone comprises several alignments of Hawaiian/Strombolian scoria cones and associated lava flows, which overflowed many of the cliffs, cut in older units and originated lava deltas (Portuguese: fajãs).
The tectonic structure is characterized by two fault systems.The main WNW-ESE structures are the dextral faults of Laoga do Capitão and Topo, that merge to the east, forming a narrow shallow graben. To the west, the graben is completely covered by the Pico stratovolcano occurring less than 10,000 years ago, and infilled by lava flows and cones of the Eastern Fissural zone, that includes many of the volcanic alignments and scarps. The second fault zone, running NNW-SSE, are markedly less in number and includes normal left lateral, oblique slip faults responsible for the main volcanic eruptions: the Lomba de Fogo-São João fault (basis of the 1718 eruption)and the Santo António volcanic alignment.
On top of Pico (Piquinho) there is an area of permanent degasification characterized by the emission of water vapour at a temperature of between 50ºC to 75°C. In addition, other vents also exist between 1,500 metres (4,900 ft) and 2,000 metres (6,600 ft) above sea level, as well as diffuse degasification along the graben between the Lagoa do Capitão and Topo faults. There is also a carbon dioxide-rich spring in the locality of Silveira (along the southern coast of Lajes do Pico, formed in the base of Pico.
Boulders on coastal plain. Criação Velha, Pico Island, Azores. Faial Island, left, on the horizon. View to NW. (WWF ecoregion PA0403)
The rounded shapes of these boulders attest to formerly higher sea levels, which may very well return during the next few centuries. Wave action had quarried these rocks from an old shoreline (behind the observer) and spread them out over the intact surface of an exposed lower lava flow. Most soil-forming finer material has been washed out to sea.
The volcanic remnants on the horizon between Pico Island and Faial Island are Ilheu Deitado ("lying-down") and Ilheu Em-Pe ("on-your-feet", a sea stack), guarding the entrance to Madalena's harbor.
For the older shore line see:
flickr.com/photos/jthumult/402904916/ and
flickr.com/photos/jthumult/402904946/
For detail of boulders see:
Mount Pico (Portuguese: Montanha do Pico), is a stratovolcano and highest point on the Portuguese island of Pico in the Azores. Further, reaching an altitude of 2,351 metres (7,713 ft) above sea level, it is more than twice the elevation of any other peak in the Azores, and the tallest mountain in Portugal.
History
Historical eruptions of Pico have occurred from vents on its flanks rather than the summit crater. In 1562–64, an eruption on the southeast flank produced lava flows which reached the sea. Another flank eruption in 1718 also produced flows which reached the coast. The most recent eruption occurred in December 1720.
On 29 September 2009 there were reports from local news sources that indicated that a fumarole existing at the pinnacle of the mountain (Piquinho) began emitting volcanic gaes. The region's seismic and volcanological monitoring centre (Portuguese: CIVISA Centro de Informação e Vigilância Sismovulcânica dos Açores) indicated that the phenomenon occurred in the early morning, turning intense and visible in various points throughout the island and from Faial. Although the event resulted from exceptional meteorlogical conditions and was visible in the Central Group, there was no liberation of anomalous volcanic gases and all other parameters fell within norms.
Geology
The landscape of the East Fissural Zone with some escoria cones
The pinnacle of the island and mountain: Pico Piquinho, also known as Pico Pequeno
The pit crater rim of Pico Alto on the summit of PicoMount Pico is part of the Madalena Volcanic Complex, one of three volcanological units that comprise the island of Pico, associated with three historic eruptions in 1562, 1718 and 1720. Current morphology suggests an age dating to the Holocene age, confirmed by radiocarbon dates younger than 6000 years. Structurally, this complex can be subdivided into two other sections: the Pico Volcano and the East Fissural Zone.
Pico is a stratovolcano, with a pit crater on its summit. Pico Alto the round crater about 500 meters (1,600 ft) in diameter and 30 meters deep tops the volcano, with Piquinho (Pico Pequeno) a small volcanic cone rising 70 meters within it to form the true summit. Meanwhile, the East Fissural Zone comprises several alignments of Hawaiian/Strombolian scoria cones and associated lava flows, which overflowed many of the cliffs, cut in older units and originated lava deltas (Portuguese: fajãs).
The tectonic structure is characterized by two fault systems.The main WNW-ESE structures are the dextral faults of Laoga do Capitão and Topo, that merge to the east, forming a narrow shallow graben. To the west, the graben is completely covered by the Pico stratovolcano occurring less than 10,000 years ago, and infilled by lava flows and cones of the Eastern Fissural zone, that includes many of the volcanic alignments and scarps. The second fault zone, running NNW-SSE, are markedly less in number and includes normal left lateral, oblique slip faults responsible for the main volcanic eruptions: the Lomba de Fogo-São João fault (basis of the 1718 eruption)and the Santo António volcanic alignment.
On top of Pico (Piquinho) there is an area of permanent degasification characterized by the emission of water vapour at a temperature of between 50ºC to 75°C. In addition, other vents also exist between 1,500 metres (4,900 ft) and 2,000 metres (6,600 ft) above sea level, as well as diffuse degasification along the graben between the Lagoa do Capitão and Topo faults. There is also a carbon dioxide-rich spring in the locality of Silveira (along the southern coast of Lajes do Pico, formed in the base of Pico.
All the Picos mountian shots posted so far were taken during a walk that began at El Cable, at the top of the Fuente De cable car.