Essays about: "pyroxene"

Showing result 6 - 10 of 15 essays containing the word pyroxene.

  1. 6. Structural Reconnaissance Mapping of the Nasa Basement Window, Southern Norrbotten Caledonides

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Hugo Hedin Baastrup; [2018]
    Keywords : Caledonides; Belt; Window; Thrust; Shear; Basement; Nappe; Tectonic; Arjeplog; Nasa; Saltfjellet; Overprint;

    Abstract : Too few documentative descriptions exist from the reactivated Proterozoic Nasa Basement window in Sweden. This re-exposed crustal piece predominantly consisting of 1.8 Ga granite and volcanic basement rock lack structural evidences on maps. READ MORE

  3. 7. Characterising the magma supply system of Agung and Batur volcanoes on Bali, Indonesia

    University essay from Uppsala universitet/Berggrundsgeologi

    Author : Harri Geiger; [2014]
    Keywords : Bali; Batur; Agung; thermobarometry; clinopyroxene; plagioclase;

    Abstract : Volcanic and magmatic processes are controlled by the composition of the magmas involved and the nature and structure of their underlying plumbing systems. To understand and predict volcanic behaviour, it is of critical importance to characterize the associated magmatic plumbing and supply system. READ MORE

  4. 8. Basalt and Andesite Magma Storage and Evolution in Puyehue Volcano (40.5 °S), Chile

    University essay from

    Author : Joaquim Otero; [2013]
    Keywords : Volcano; Thermobarometry; Puyehue; Basalt; Andesite; Contamination;

    Abstract : The study of magmatic processes and their location in the crustal profile is fundamental for the understanding of the volcanic systems and their associated hazards. Changes and continuities in magma storage zones, fractional crystallization and crustal contamination are studied over a time span of 300 ka in Puyehue Volcano in the Southern Volcanic Zone, Chile. READ MORE

  5. 9. The alteration mineralogy of Svartliden, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Lawrence Nilsson; [2013]
    Keywords : Svartliden; alteration mineralogy; Fäboliden; amphibolite and granulite facies; Dragon Mining Sweden; Earth and Environmental Sciences;

    Abstract : The alteration mineralogy of Svartliden, Sweden Svartliden mine is an open pit in northern Sweden close to the Skellefte field in the “Gold Line”, which is a zone associated with gold mineralization. Svartliden gold mine was discovered by amateur geologists who were prospecting after boulders that contained low sulphide contented. READ MORE

  6. 10. Variation in rock quality between metamorphic domains in the lower levels of the Eastern Segment, Sveconorwegian Province

    University essay from Lunds universitet/Geologiska institutionen

    Author : Linda Lundgren; [2012]
    Keywords : rock quality; microDeval test; Los Angeles test; studded tyre test; quantitative analyses; Los Angelesvärde; kulkvarnsvärde; microDevalvärde; bergkvalitet; kvantitativa analyser; Earth and Environmental Sciences;

    Abstract : Populärvetenskaplig sammanfattning: Variationer i bergkvalitet hos gnejser i Halland, sydvästra Sverige För att kunna förklara variationer i bergkvalitet hos hög metamorfa gnejser i Halland, sydvästra Sverige, har tolv gnejser från området undersökts både kvantitativt och kvalitativt. Tanken är att de kvalitativa resultaten, fält- och tunnslipsbeskrivningar, ska kunna användas som prospekteringsverktyg för aggregat till väg och järnväg. READ MORE