Essays about: "Canary Islands"

Showing result 11 - 15 of 19 essays containing the words Canary Islands.

  1. 11. 3D Modelling of the Tejeda Cone-Sheet Swarm, Gran Canaria, Canary Islands, Spain

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Lisa K. Samrock; [2015]
    Keywords : Cone-sheet swarm; 3D modelling; Tejeda caldera; Gran Canaria; magma chamber reconstruction; sheet intrusions; Inverterade koniska intrusionssvärmar; 3D-modellering; Tejeda kaldera; Gran Canaria; rekonstruktion av magmakammare; magmatiska intrusioner;

    Abstract : Cone-sheet swarms are magmatic sheet intrusions and part of volcanic plumbing systems and are pathways for magma to the Earth’s surface, where they feed volcanic eruptions. The analysis of cone-sheets provides information on the geometry of the magmatic plumbing system of a volcano and allows to understand processes and dynamics of magma transport. READ MORE

  3. 12. Social diversity for ecosystem management in La Palma Biosphere Reserve, Canary Islands : Perspectives, knowledge and management practices among local stewards in the near-shore marine ecosystem

    University essay from Stockholms universitet/Stockholm Resilience Centre

    Author : Laia d'Armengol i Catà; [2013]
    Keywords : adaptive co-management; local stewards; La Palma; biosphere reserve; social diversity; local ecological knowledge; local management practices; social networks; mental models.;

    Abstract : Adaptive approaches to ecosystem management emphasize that ecosystems need to be treated as complex social-ecological systems. Furthermore, both ecological and social diversity need to be enhanced to improve the adaptability of such systems to surprises. READ MORE

  4. 13. Determining the depth of magma storage by investigation of samples from the eruption on La Palma 1971

    University essay from Institutionen för geovetenskaper

    Author : Anna Svensson; [2013]
    Keywords : canary islands; volcanism; magma storage;

    Abstract : The Canary islands are formed by a slow moving hotspot, from Fuerteventura 20 Ma to el Hierro 1.2Ma years old and La Palma is in the shield building stage of evolution. La Palma had its last eruption 1971 and has had seven eruptions since 1430, which makes it the most active of the islands in our times. READ MORE

  5. 14. Disintegration and Devolatilisation of Sandstone Xenolith in Magmatic Conduits: an Experimental Approach

    University essay from Berggrundsgeologi

    Author : Sylvia Berg; [2010]
    Keywords : xenolith; melting; bubbles; gas migration; crustal volatiles; magma-crust interaction; magma volatile budget; explosive eruption;

    Abstract : Xenoliths preserve evidence of magma-crust interactions in magmatic reservoirs and conduits. They reveal processes of partial melting of country rock, and disintegration into magma. Widespread evidence for frothy xenoliths in volcanic deposits exists, and these evidently indicate processes of gas liberation, bubble nucleation and bubble growth. READ MORE

  6. 15. A geochemical characterization of the lower part of the Miocene shield-building lavas on Gran Canaria

    University essay from Lunds universitet/Geologiska institutionen

    Author : Romina Peetz; [2009]
    Keywords : Gran Canaria; shield-building lavas; Güigüi Formation; Earth and Environmental Sciences;

    Abstract : Ocean islands offer a great potential to provide information about mantle processes and the composition of the mantle. Gran Canaria is located in the centre of the Canary Island Archipelago and is well suited for such studies. A comprehensive study of the lower Miocene shield-building lavas is performed for this thesis. READ MORE