62,477 research outputs found

    LOS EXPEDICIONARIOS EN EL HOTEL CAMACHO DE TACORONTE [Material gr谩fico]

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    脕LBUM FAMILIAR CASA DE COL脫N. EXPEDICI脫N DEL MUSEO CANARIO AL TEIDE. 1931.Copia digital. Madrid : Ministerio de Educaci贸n, Cultura y Deporte. Subdirecci贸n General de Coordinaci贸n Bibliotecaria, 201

    FAMILIA MART脥N GONZ脕LEZ [Material gr谩fico]

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    脕LBUM FAMILIAR CASA DE COL脫NCopia digital. Madrid : Ministerio de Educaci贸n, Cultura y Deporte. Subdirecci贸n General de Coordinaci贸n Bibliotecaria, 201

    RETAMAS [Material gr谩fico]

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    脕LBUM FAMILIAR CASA DE COL脫N. EXPEDICI脫N DEL MUSEO CANARIO AL TEIDE. 1931Copia digital. Madrid : Ministerio de Educaci贸n, Cultura y Deporte. Subdirecci贸n General de Coordinaci贸n Bibliotecaria, 201

    EMANACIONES DE AZUFRE EN EL PICO [Material gr谩fico]

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    脕LBUM FAMILIAR CASA DE COL脫N. EXPEDICI脫N DEL MUSEO CANARIO AL TEIDE. 1931Copia digital. Madrid : Ministerio de Educaci贸n, Cultura y Deporte. Subdirecci贸n General de Coordinaci贸n Bibliotecaria, 201

    REINICIANDO LA MARCHA [Material gr谩fico]

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    脕LBUM FAMILIAR CASA DE COL脫N. EXPEDICI脫N DEL MUSEO CANARIO AL TEIDE. 1931Copia digital. Madrid : Ministerio de Educaci贸n, Cultura y Deporte. Subdirecci贸n General de Coordinaci贸n Bibliotecaria, 201

    Seismic structure of the volcanic apron north of Gran Canaria

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    High-resolution reflection seismic profiles through the volcanic apron north of Gran Canaria collected during Meteor Cruise 24 were interpreted in the light of results from Leg 157 (Sites 953 and 954). The shape of the submarine island flanks of Gran Canaria and the two adjacent islands of Fuerteventura to the east and Tenerife to the west were reconstructed by interpretating seismic profiles that penetrated the sediments covering the deeper portions of the volcanic pedestals. The ~4750-m-deep flank of Fuerteventura is the oldest submarine island flank, influencing the subsequent shield-building of Gran Canaria to the east, whose 16- to 15-Ma shield is ponded against Fuerteventura, forming a topographic barrier between the islands. The associated reduction of the current cross section has caused strong bottom currents, indicated by erosional features and contourites. To the north, the flank of Gran Canaria extends 60 km seaward to a depth of ~4500 m. The shield of the Anaga massif on northeast Tenerife onlaps the flank of Gran Canaria to the east. Seismic correlation of the feathered edge of the Anaga shield (~50 km off Tenerife at a depth of 4000 m) to the bio- and magnetostratigraphy at Site 953 results in an age of ~6 Ma. The surrounding sedimentary basin is characterized by chaotic and discontinuous reflection patterns of the slope facies, turning into well-stratified basin facies ~30鈥40 km off the coast. The westward decrease of reflectivity in the northern apron is interpreted to be caused by the submarine ridge off Galdar at the western limit of the north coast of Gran Canaria, through which mass flows from Gran Canaria entering the sea in the north were diverted to the northeastern part of the apron. The volcanic activity correlates with the sedimentation rates in the apron. The lowest rate corresponds to the volcanic hiatus on Gran Canaria (9鈥5 Ma) with 3鈥4 cm/k.y., and the highest rate (up to 12 cm/k.y.) was found during the voluminous Miocene volcanism on the island. A number of large mass-wasting events could be identified, interbedded with the pelagic background sedimentation. The basaltic breccia drilled at Site 954 (lithologic Unit IV) is interpreted to represent the deposits associated with a slope failure at the northern flank of Gran Canaria at 12 Ma. The seismic mapping reveals >60 km3 of debris advanced at least 70 km into the apron. The volume fits well with the dimensions of an amphitheater at the northern flank of Gran Canaria. The Quaternary volcanism on La Isleta at northeast Gran Canaria extends further seaward, where the seismic data show young lava flows. Other submarine volcanism occurred in the channel between Gran Canaria and Fuerteventura

    Els Ocells del jaciment arqueol貌gic de La Aldea, Gran Can脿ria

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    Hom d贸na a con猫ixer la fauna orn铆tica lliurada pel jaciment arqueol貌gic de La Aldea, Gran Canaria. La pres猫ncia de, com a m铆nim, una esp猫cie de colom de laurisilva denuncia l'exist猫ncia en el passat de boscos de laurisilva importants a l'illa de Gran Canaria. Dintre del conjunt orn铆tic estudiat destaca la pres猫ncia de diferents esp猫cies d'aus de talla gran enfront d'una representaci贸 minsa d'ocells petits. La deposici贸 d'aquesta fauna sembla lligada a activitats antr貌piques.Bird remains from the archaeological site of La Aldea, Gran Canaria, are studied in this paper. The former existence of laurel forest in Gran Canaria is revealed by the presence of a least one species of laurel forest pigeon. Larger bird species are well represented in this deposit, in contrast to smaller ones. Deposition of bird remains is associated with human activities.Se da a conocer la fauna orn铆tica suministrada por el yacimiento arqueol贸gico de La Aldea, Gran Canaria. La presencia de al menos una especie de paloma de laurisilva denuncia la existencia en el pasado de bosques de laurisilva importantes en la isla de Gran Canaria. Dentro del conjunto orn铆tico estudiado destaca la presencia de diferentes especies de ayes de gran tama帽o en comparaci贸n con la escasa representaci贸n de ayes peque帽as. La deposici贸n de esta fauna parece estar ligada a actividades antr贸picas

    MAR脥A DOLORES S脕NCHEZ [Material gr谩fico]

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    脕LBUM FAMILIAR CASA DE COL脫NCopia digital. Madrid : Ministerio de Educaci贸n, Cultura y Deporte. Subdirecci贸n General de Coordinaci贸n Bibliotecaria, 201

    CARAVANA EN LAS CA脩ADAS [Material gr谩fico]

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    脕LBUM FAMILIAR CASA DE COL脫N. EXPEDICI脫N DEL MUSEO CANARIO AL TEIDE. 1931Copia digital. Madrid : Ministerio de Educaci贸n, Cultura y Deporte. Subdirecci贸n General de Coordinaci贸n Bibliotecaria, 201

    EN EL PICO, 3700 MTS [Material gr谩fico]

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    脕LBUM FAMILIAR CASA DE COL脫N. EXPEDICI脫N DEL MUSEO CANARIO AL TEIDE. 1931Copia digital. Madrid : Ministerio de Educaci贸n, Cultura y Deporte. Subdirecci贸n General de Coordinaci贸n Bibliotecaria, 201
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