Essays about: "lithology"

Showing result 16 - 20 of 34 essays containing the word lithology.

  1. 16. A palynological study across the Ordovician Kinnekulle bentonite, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Johan Nordas; [2015]
    Keywords : Acritarch; bentonite; Ordovician; Borenshult-1; Sweden; Kinnekulle; Earth and Environmental Sciences;

    Abstract : A palynological analysis across the Ordovician (Sandbian) Kinnekulle bentonites in south Central Sweden has been performed. The sedimentary successions were recovered from the Borenshult -1 drillcore in the Motala area, south central Sweden. The lithology is dominated by mudstones and two thick bentonite beds. READ MORE

  3. 17. Traces of impact in crystalline rock : a summary of processes and products of shock metamorphism in crystalline rock with focus on planar deformation features in feldspars

    University essay from Lunds universitet/Geologiska institutionen

    Author : Fredrika Svahn; [2014]
    Keywords : Impacts; shock metamorphism; crater formation; shock metamorphic features; planar deformation features; alkali-feldspars; Siljan impact structure; Earth and Environmental Sciences;

    Abstract : Chockmetamorfa strukturer i alkalifältspater har genom studier i polarisationsmikroskop identi-fierats i graniter från Siljan- nedslagskrater. De mikroskopiska strukturer som observerats omfattas av; deformation bands, ladder textures, planar fractures, ”long deformation features", samt planar deformation features (PDFs). READ MORE

  4. 18. 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. 19. Sulfide Mineralogy in the Ballachulish contact metamorphic Aureole

    University essay from Institutionen för geologiska vetenskaper

    Author : Ossian Åström; [2012]
    Keywords : Sulfide; mineralogy; Ballachulish; contact; metamorphic; aureole; pyrite; pyrrhotite; recrystallization; cordierite;

    Abstract : 16 samples of increasing metamorphic grade from the Ballachulish Igneous Complex and Aureole, located in the west of Scotland, were studied in order to analyze the sulfide mineralogy and to what extent they were affected by contact metamorphism. The samples were collected from two lithologies, the Creran Succession and the Ballachulish Slate lithology, as well as from the igneous complex. READ MORE

  6. 20. Holocene environmental changes as recorded in sediments from Kaggfjärden, southern archipelago of Stockholm, using diatom stratigraphy

    University essay from Institutionen för livsvetenskaper

    Author : Lena Ivarsson; [2011]
    Keywords : ;

    Abstract : Four sediment cores were sampled in Kaggfjärden, located in the southern archipelago of Stockholm. Two of the cores were analyzed with respect to the diatom record and lithology. Terrestrial macrofossils were dated using Carbon-14 dating. READ MORE