Essays about: "magmatic intrusion"

Showing result 6 - 10 of 15 essays containing the words magmatic intrusion.

  1. 6. Crystallization and Emplacement of the Monte Amarelo Dikes: Magma Storage Assessment on Fogo, Cape Verde Islands

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Olle Risby; [2017]
    Keywords : Fogo; magma storage model; thermobarometry; clinopyroxene; intrusion landslide.; Fogo; magmalagringsdjup; termobarometri; klinopyroxen; intrusion; skred;

    Abstract : The volcanic island of Fogo belongs to the Cape Verde archipelago, a two-tiered chain of islands situated 500 km west of the African coast. Fogo is regarded as one of the most active volcanoes in the world with 10 eruptions during the last 250 years. The former shield volcano Monte Amarelo reached 3500 m.a. READ MORE

  3. 7. Magmatic Sheet Intrusions as Seen in Surface Deformation - Developing a Tool for Interpreting Volcanic Unrest

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Frank Guldstrand; [2015]
    Keywords : Analogue modelling; surface deformation; cone sheets; dykes; moiré; photogrammetry; sheet intrusions; propagation; Analog modellering; ytdeformation; inverterade koner; vertikala plan; moiré; fotogrammetri; magmatiska intrusioner; propagering;

    Abstract : The end-member types of shallow magmatic intrusions comprise cone sheets and dykes. These propagate from their source magma chamber towards the Earth’s surface. The propagation of magma within the shallow part of the volcano plumbing system produces surface deformation and seismicity, signs of volcanic unrest. READ MORE

  4. 8. Qualitative and quantitative petrography of meta-mafic rocks at Ölme, in the Eastern Segment of the Sveconorwegian orogen

    University essay from Stockholms universitet/Institutionen för geologiska vetenskaper

    Author : Diana Carlsson; [2015]
    Keywords : metamorphism; high pressure; amphibolite; granulite; gabbro; metagabbro; garnet-amphibolite; complex coronitic textures; symplectite; Eastern Segment; Transitional section;

    Abstract : Meta-mafic intrusions with an intrusion age of 1.6-0.9 Ga are found along a north-south trend in theTransitional section of the Eastern Segment in Sweden. These intrusions are garnet-bearing and thus anexception to other meta-mafic intrusions found in Sweden. READ MORE

  5. 9. Metadolerites as quantitative P-T markers for Sveconorwegian metamorphsim, SW Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Birgit Fredrich; [2014]
    Keywords : Earth and Environmental Sciences;

    Abstract : Strukturellt unga och N-S-ligt strykande högmetamorfa metadiabaser förekommer i Östra segmentet längs västkusten från Varberg till Kullaberg, och i inlandet mot öster till den Svekonorvegiska fronten. Dessa basiska gångar skär ställvis gnejsiga strukturer i värdbergarterna. READ MORE

  6. 10. The Roots of a Magma Chamber, the Central Intrusion, Rum, NW-Scotland

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Tobias Mattsson; [2014]
    Keywords : Rum; Layered Ultrabasic Intrusion; Long Loch Fault; 3D modelling; Rum; Minerallagrad magmakammare; Long Loch Förskastningen; 3D modellering;

    Abstract : The island of Rum in the Inner Hebrides, NW-Scotland, hosts a central volcanic complex that is part of the British-Irish Palaeogene Igneous Province situated in NE- Ireland and NW- Scotland. On Rum, rocks from several stages of Palaeogene magmatic activity have been exposed by millions of years of erosion. READ MORE