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Tejeda is a village and a municipality in the mountainous central part of the island of
(
On ''estodotuyo.com'', site on Heritage assets by the council of Grand Canary.
The village of Tejeda sits on the eastern edgeTopographic map of Grand Canary island
on ''en-us.topographic-map.com''. of a volcanic basin or crater that bears its name (''caldera de Tejeda'').Rock Bentayga
on ''googlemaps.com''.Video (0.28') of the Caldera de Tejeda seen from the ''Degollada de la Becerra''
''Gran Canaria - Origen y formación''
("Grand Canary: origin and formation") on ''gevic.net''. This page includes an evolutive diagram showing the main stages of formation and evolution of Gran Canaria island, with the resultant collapsed Tejeda crater. The ''caldera''’s dimensions are 28 km x 18 km, with a surface that extends from the head of Agaete's ravine (''barranco de
on ''grancanaria.com''. Anden Verde is along Grand Canary west coast, on the GC-200 road, between Tamadaba nature park to the north-east and El Lomo to the south-west. . VenegueraVeneguera, coordinates: . and the head of Mogán ravine (''barranco de Mogán'')Head of Mogan's ravine (''barranco de Mogán''), coordinates: . up to Arguineguín's ravine (''barranco de Arguineguin'').Head of Arguineguin's ravine (''barranco de Arguineguin''), coordinates: . Only half of its perimeter remains standing; on what is left of it are found a few green-bluish peaks (such as ''"azulejos" de Veneguera'' - "Veneguera's tiles") and below these are the oldest basalts of the island, primitive substrate of Grand Canary. Ana Santana (2015)
''Una violenta erupción creó una gigantesca caldera de colapso en Gran Canaria - Tejeda, un claro ejemplo a nivel planetario de una caldera de colapso''
("A violent eruption creates a gigantic collapsed crater in Grand Canary - Tejeda, a clear example on a planetary level of a collapse crater"). Santa Cruz de Tenerife, March 26, 2015. On ''efeverde.com''. The ''caldera'' was produced in probably less than two hours, by the explosion of the residual magma chambersResidual magma chambers are the cavities that hold the magma that is not projected outside during an eruption. They usually lay 2 to 3 km underground. After an eruption the magma in the chamber slowly cools down, at the same time as heavy particles that it may contain, such as iron, fall at the bottom of the chamber – thus capping the hole by which magma comes out from the Earth’s mantle. When more magma is injected outwards from the mantle, that cap bursts under the pressure and the magma within the chamber violently erupts outward. The outer surface above the chamber then collapses. During the collapse of the ''caldera de Tejera''
The ''caldera'' also bears traces of a 2 million year period of evolution. This is especially notable at the heads of the Agaete ravine (''barranco de Agaete'') and Mogan ravine (''barranco de Mogan''), where we can see horizontal basaltic lavas in their lower parts and, above, thicker material in sloping layers. Another rare feature of the caldera is its system of conical dykes in its center, that were damaged by the eruptions and determined the structure of the island by their own structure. The lava passed through these dykes during some eruptions, in particular basaltic eruptions ; this created a crack in the surrounding channels where the lava was injected, and from them the volcano arose. In Grand Canary these conical dykes were centered on a focal point located roughly 2 km under sea level, at what was in the past the center of the island. New magma would then tend to also take the same conical shape. Conical dykes of this size are not found in other islands;
''Una violenta erupción creó una gigantesca caldera de colapso en Gran Canaria...''
by Ana Santana, March 26, 2015.Formation of the ''Cañadas del Teide'': the main alternative theory about their formation is that of a gravitational slide, which seems to be the most probable in regard of the scientific evidences.
File:Iglesia Nuestra Señora del Socorro - Tejeda.jpg, View from south
File:Iglesia Nuestra Señora del Socorro - Tejeda - facade.jpg, Facade
File:Iglesia Nuestra Señora del Socorro - Tejeda - Interior.jpg, Interior
File:Iglesia Nuestra Señora del Socorro - Tejeda - left side altar.jpg, Left side altar
File:Iglesia Nuestra Señora del Socorro - Tejeda - right side altar.jpg, Right side altar
File:Iglesia Nuestra Señora del Socorro - Tejeda - Virgen del Socorro.jpg, Virgen del Socorro
, population
Gran Canaria
Gran Canaria (, ; ), also Grand Canary Island, is the third-largest and second-most-populous island of the Canary Islands, an archipelago off the Atlantic coast of Northwest Africa which is part of Spain. the island had a population of that co ...
in the province of Las Palmas
The Province of Las Palmas (, ; es, Provincia de Las Palmas) is a province of Spain, consisting of the eastern part of the autonomous community of the Canary Islands. Las Palmas de Gran Canaria, capital city of this province and of the isla ...
in the Canary Islands
The Canary Islands (; es, Canarias, ), also known informally as the Canaries, are a Spanish autonomous community and archipelago in the Atlantic Ocean, in Macaronesia. At their closest point to the African mainland, they are west of Morocc ...
.
Location
The village of Tejeda is situated north-west of the Pico de las Nieves and south-west of the island capitalLas Palmas
Las Palmas (, ; ), officially Las Palmas de Gran Canaria, is a Spain, Spanish city and capital of Gran Canaria, in the Canary Islands, on the Atlantic Ocean.
It is the capital (jointly with Santa Cruz de Tenerife), the most populous city in th ...
.
Geography
The municipality's area is , spreading near the centre of the island, on the latter's west side. The south-eastern part of its territory includes the second highest point of Gran Canaria island, '' Pico de las Nieves'' ("Snows Peak") - . Other remarkable summits in the municipality are '' Roque Nublo'' ("Cloud Rock") and '' Roque Bentayga'' ("Bentayga Rock
The Bentley Bentayga is a mid-size luxury crossover SUV produced by Bentley Motors since late 2015. It is the first SUV to be produced by the brand. Its body is manufactured at the Volkswagen Zwickau-Mosel Plant in Germany, then painted by Pai ...
") with its ritual place (''almogarén'') and other features. Close by are the '' cuevas del Rey'' ("the King's caves", 1 km to the west of Rock Bentayga), an antique cave house village with granaries; and 2 km further west the antique cave house village of ''Acusa Seca''.Acusa Seca - Declaration as "''Bien de Interés Cultural''"(
Property of cultural interest
Property is a system of rights that gives people legal control of valuable things, and also refers to the valuable things themselves. Depending on the nature of the property, an owner of property may have the right to consume, alter, share, r ...
), March 11, 2010. Published in B.O.C. (''Boletín Oficial de Canarias'') nr. 61 on March 26, 2010. All these sites are listed Spanish Heritage as Properties of cultural interest ("''Bien de Interés Cultural''").Interactive map of Heritage sites on Grand Canary islandOn ''estodotuyo.com'', site on Heritage assets by the council of Grand Canary.
Geology : ''caldera de Tejeda''
The village of Tejeda sits on the eastern edgeTopographic map of Grand Canary islandon ''en-us.topographic-map.com''. of a volcanic basin or crater that bears its name (''caldera de Tejeda'').Rock Bentayga
on ''googlemaps.com''.Video (0.28') of the Caldera de Tejeda seen from the ''Degollada de la Becerra''
''Gran Canaria - Origen y formación''
("Grand Canary: origin and formation") on ''gevic.net''. This page includes an evolutive diagram showing the main stages of formation and evolution of Gran Canaria island, with the resultant collapsed Tejeda crater. The ''caldera''’s dimensions are 28 km x 18 km, with a surface that extends from the head of Agaete's ravine (''barranco de
Agaete
Agaete is a municipality of Las Palmas province, on the Canary Islands, Spain.
Geography
It is in the north-west of Gran Canaria island, and is enclosed by the Atlantic Ocean to the west, Gáldar to the north-east, and Artenara to the south. ...
'')Head of Agaete's ravine (''barranco de Agaete''), coordinates: . near Artenara, to ''Verde Andén'' ("Green Platform") in the west,Anden Verde miradoron ''grancanaria.com''. Anden Verde is along Grand Canary west coast, on the GC-200 road, between Tamadaba nature park to the north-east and El Lomo to the south-west. . VenegueraVeneguera, coordinates: . and the head of Mogán ravine (''barranco de Mogán'')Head of Mogan's ravine (''barranco de Mogán''), coordinates: . up to Arguineguín's ravine (''barranco de Arguineguin'').Head of Arguineguin's ravine (''barranco de Arguineguin''), coordinates: . Only half of its perimeter remains standing; on what is left of it are found a few green-bluish peaks (such as ''"azulejos" de Veneguera'' - "Veneguera's tiles") and below these are the oldest basalts of the island, primitive substrate of Grand Canary. Ana Santana (2015)
''Una violenta erupción creó una gigantesca caldera de colapso en Gran Canaria - Tejeda, un claro ejemplo a nivel planetario de una caldera de colapso''
("A violent eruption creates a gigantic collapsed crater in Grand Canary - Tejeda, a clear example on a planetary level of a collapse crater"). Santa Cruz de Tenerife, March 26, 2015. On ''efeverde.com''. The ''caldera'' was produced in probably less than two hours, by the explosion of the residual magma chambersResidual magma chambers are the cavities that hold the magma that is not projected outside during an eruption. They usually lay 2 to 3 km underground. After an eruption the magma in the chamber slowly cools down, at the same time as heavy particles that it may contain, such as iron, fall at the bottom of the chamber – thus capping the hole by which magma comes out from the Earth’s mantle. When more magma is injected outwards from the mantle, that cap bursts under the pressure and the magma within the chamber violently erupts outward. The outer surface above the chamber then collapses. During the collapse of the ''caldera de Tejera''
ignimbrite
Ignimbrite is a type of volcanic rock, consisting of hardened tuff. Ignimbrites form from the deposits of pyroclastic flows, which are a hot suspension of particles and gases flowing rapidly from a volcano, driven by being denser than the surrou ...
rock was produced, with a pink matrix dotted with white crystals. It exists because the explosive eruption
In volcanology, an explosive eruption is a volcanic eruption of the most violent type. A notable example is the 1980 eruption of Mount St. Helens. Such eruptions result when sufficient gas has dissolved under pressure within a viscous magma such ...
by which the ''caldera'' collapsed was so powerful that the magma was pulverized in a very fine spray and created almost microscopic structures in the matrix rock. ''Ignimbrita'' is found on the outside of the periphery of the ''caldera''. The ''caldera'' also bears traces of a 2 million year period of evolution. This is especially notable at the heads of the Agaete ravine (''barranco de Agaete'') and Mogan ravine (''barranco de Mogan''), where we can see horizontal basaltic lavas in their lower parts and, above, thicker material in sloping layers. Another rare feature of the caldera is its system of conical dykes in its center, that were damaged by the eruptions and determined the structure of the island by their own structure. The lava passed through these dykes during some eruptions, in particular basaltic eruptions ; this created a crack in the surrounding channels where the lava was injected, and from them the volcano arose. In Grand Canary these conical dykes were centered on a focal point located roughly 2 km under sea level, at what was in the past the center of the island. New magma would then tend to also take the same conical shape. Conical dykes of this size are not found in other islands;
Vallehermoso Vallehermoso can mean:
*Vallehermoso, Negros Oriental, a municipality in the Philippines
*Vallehermoso, Santa Cruz de Tenerife, a municipality on Canary Island
*Vallehermoso (Madrid), a ward of Chamberi district, Madrid, Spain
*Estadio de Valleherm ...
on La Gomera
La Gomera () is one of Spain's Canary Islands, located in the Atlantic Ocean off the coast of Africa. With an area of , it is the third smallest of the eight main islands of this archipelago. It belongs to the province of Santa Cruz de Tene ...
island has some smaller ones.
Biologist Juan Sergio Socorro considers this crater to be one of the few clear examples in the world of a very large collapsed volcanic crater, particularly in comparison to the ''Cañadas del Teide'' for which several theories are held regarding its formation.Juan Sergio Socorro, March 27, 2015. Cited in articl''Una violenta erupción creó una gigantesca caldera de colapso en Gran Canaria...''
by Ana Santana, March 26, 2015.Formation of the ''Cañadas del Teide'': the main alternative theory about their formation is that of a gravitational slide, which seems to be the most probable in regard of the scientific evidences.
Iglesia Nuestra Señora del Socorro
Population
Its population was 2,028 in 2013.Instituto Canario de Estadística, population
Neighbouring municipalities
Villages
300px,
See also
*List of municipalities in Las Palmas
This is a list of the 34 municipalities in the province of Las Palmas in the autonomous community of the Canary Islands, Spain. There are 21 municipalities on the island of Gran Canaria, 6 on the island of Fuerteventura and 7 on the island of Lan ...
Notes and references
Notes
References
External links
{{Authority control Municipalities in Gran Canaria