Essays about: "Precambrian"

Showing result 1 - 5 of 15 essays containing the word Precambrian.

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

    University essay from Lunds universitet/Geologiska institutionen

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

    Abstract : 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. READ MORE

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

    University essay from KTH/Jord- och bergmekanik

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

    Abstract : 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. READ MORE

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

    University essay from Uppsala universitet/Institutionen för geovetenskaper

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

    Abstract : 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. READ MORE

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

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Alexander Sehr; Andin Eric; [2017]
    Keywords : 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;

    Abstract : 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. READ MORE

  6. 5. Understanding igneous processes through zircon trace element systematics : prospects and pitfalls

    University essay from Lunds universitet/Geologiska institutionen

    Author : Marín Ósk Hafnadóttir; [2014]
    Keywords : plagioclase fractionation. zirkon; hydrothermal alteration; precambrian; zircon; Ghana; hydrotermal-omvandling; plagioklasfraktionering; Earth and Environmental Sciences;

    Abstract : Zirkon från magmatiska bergarter extraherades från fem granitoider i Birimianterrängen i Ghana., och detritala zirkoner provtogs från sex platser i centrala Västgrönland. Av dessa härrör en population från palaeoproterozoikum i Prøvens magmatiska komplex. READ MORE