Sökning: "lithology"

Visar resultat 1 - 5 av 43 uppsatser innehållade ordet lithology.

  1. 1. A Geophysical Survey of Northern Utö

    Master-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

    Författare :Nicole Flanders; [2023]
    Nyckelord :;

    Sammanfattning : A geophysical investigation on the northern part of Utö was carried out between 2020 and 2021 to asses the extent of the iron ore (BIFs) and the iron bearing sulfides that have been surveyed and mined in the past. The survey using analog field equipment combined magnetometry, gravimetry, susceptibility, leveling, density, and thin-section microscopy. LÄS MER

  3. 2. Landslide Susceptibility Analysis Using Open Geo-spatial Data and Frequency Ratio Technique

    Master-uppsats, KTH/Geoinformatik

    Författare :TARIK EMRE YORULMAZ; [2022]
    Nyckelord :Landslides; Hazard mapping; Geographic Information Systems GIS ; Spatial analysis; Frequency ratio FR ; Area Under a Curve AUC ;

    Sammanfattning : Landslide susceptibility maps are useful for spatial decision-making to minimize the lossof lives and properties. There are many studies related to the development of landslidesusceptibility maps using various methods such as Analytic Hierarchy Process, Weight ofEvidence and Logistic Regression. LÄS MER

  4. 3. Epidotization as an Effect of Fluid Rock Interaction, Recorded by a Granitoid From Hågadalen, Uppsala

    Kandidat-uppsats, Uppsala universitet/Mineralogi, petrologi och tektonik

    Författare :Linn Barreby; [2022]
    Nyckelord :Fluids; Fluid Transport; Metamorphism; Metasomatism; Saussuritization; Epidote Group; Geology; Bedrock; Fluider; Fluidtransport; Metamorfos; Metasomatism; Saussuritisering; Epidot Gruppen; Geologi; Berggrund;

    Sammanfattning : A common driving mechanism of metamorphic processes, from which secondary mineralizations and structures develop in a protolith, is known to be a change of the immediate P-T environment that a rock resides in. A factor in this process, which is poorly understood, however, is how the presence of metamorphic fluids in a system, influences the alteration of primary igneous rocks. LÄS MER

  5. 4. Variations in depositional environments of the Paleogene Firkanten Formation across Adventdalen, from Operafjellet to Breinosa

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Anna Stella Guðmundsdóttir; [2021-03-18]
    Nyckelord :;

    Sammanfattning : The lowermost Paleogene clastic infill of the Central Spitsbergen Tertiary Basin, the coal bearing Firkanten Formation, has been the subject of study for researchers in the past but little focus has been on the northeast edge of the basin until now. Due to the economic potential of the coal seams in the formation, the Norwegian mining company, Store Norske Spitsbergen Grubekompani (SNSG), has for several years conducted core drilling in key locations in basin, and for decades, they have given an access to their core material to researchers. LÄS MER

  7. 5. Machine Learning Applied to Reach Classification in a Northern Sweden Catchment

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Mariana dos Santos Toledo Busarello; [2021]
    Nyckelord :machine learning; geomorphology; random forest; channel type;

    Sammanfattning : An accurate fine resolution classification of river systems positively impacts the process of assessment and monitoring of water courses, as stressed by the European Commission’s Water Framework Directive. Being able to attribute classes using remotely obtained data can be advantageous to perform extensive classification of reaches without the use of field work, with some methods also allowing to identify which features best described each of the process domains. LÄS MER