Sökning: "precambrian"

Visar resultat 1 - 5 av 25 uppsatser innehållade ordet precambrian.

  1. 1. Feasibility of Enhanced Geothermal Systems in the Precambrian crystalline basement in SW Scania, Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Hanna Kervall; [2021]
    Nyckelord :EGS; deep drilling; geothermal; petrology; petrophysical properties; Sveconorwegian; Earth and Environmental Sciences;

    Sammanfattning : The ability to evaluate the geothermal potential at a depth of five to six kilometres in the crystalline bedrock is crucial for the EGS-technology to be utilized in the future. This work focuses primarily on presenting expected geological conditions at great depths in southwestern Scania. The study is based on information from E. LÄS MER

  3. 2. En sammanställning av norra Skånes prekambriska berggrund

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Simon Andersen Staahlnacke; [2018]
    Nyckelord :Skåne; prekambrium; svekonorvegiska provinsen; protoginzonen; orogenes; Earth and Environmental Sciences;

    Sammanfattning : This literature study aims to summarize the Precambrian bedrock and its geological development in northern Scania. The study is based on previously published material, primarily three of SGU’s bedrock maps: Af 127, 155 and 181. These show the bedrock in the area northeast, southwest and northwest of Kristianstad. LÄS MER

  4. 3. Buckling of End-Bearing Retaining Walls in Clay

    Master-uppsats, KTH/Jord- och bergmekanik

    Författare :Fredrik Jansson; Nils Nilsson; [2018]
    Nyckelord :Berliner walls; Critical loads; buckling; finite element model; Eurocode 3; Berlinerspont; Rörspont; kritisk knäckningslast; knäckning; finit element modell; Eurocode 3;

    Sammanfattning : The design of back-anchored retaining walls in Sweden has traditionally not included global elastic instability of the retaining wall as a possible failure mode. Eurocode 3 part 5 (SS-EN 1993-5) requires design of steel structural members for retaining walls to assess the risk of buckling if the normal force exceeds 4 % of the critical buckling load of the retaining wall. LÄS MER

  5. 4. Identification Methods of Sri Lankan Corundum in Comparison to Other Common Gemstones

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Axel Kilbo Pehrson; [2017]
    Nyckelord :identification; Sri Lanka; corundum; gemstones; identifikation; Sri Lanka; Korund; ädelstenar;

    Sammanfattning : Sri Lanka is one of the leading countries in export of high quality corundum (Al2O3) gemstones due to the Precambrian rocks geological background. Combined highgrade metamorphic silicates and carbonate rocks makes perfect conditions for crystallization of this mineral. LÄS MER

  7. 5. A 4D Analysis of a Minor Graben Structure at Ekolsund, South Central Sweden

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Alexander Sehr; Andin Eric; [2017]
    Nyckelord :South central Sweden; pull apart basin; 3D brittle deformation model; reactivation; striation markers; Södra centrala Sverige; pull apart basin; 3D spröd deformationsmodell; reaktivering; striation markörer;

    Sammanfattning : The objective of this project is about a kinematic analysis of a shear zone, specifically a graben structure. The surface of the study area has also been investigated, this is to understand if a faulting reactivation has occurred due to glacial impact. LÄS MER