Essays about: "gnejs"

Showing result 1 - 5 of 11 essays containing the word gnejs.

  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. Hydrogeological Prognoses in Infrastructure Projects : A Case Study of Stockholm Bypass, Hjulsta Norra

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Frida Grenholm; [2020]
    Keywords : Infrastructure; hydrogeology; groundwater; prognoses;

    Abstract : As cities expand, urban planning and efficient land use becomes more important and presents new challenges. A city that is exposed to these challenges is Stockholm, Sweden (Stockholms stad, 2018). READ MORE

  4. 3. Pressure-Temperature-time Constraints on the Deep Subduction of the Seve Nappe Complex in Jämtland and southern Västerbotten, Scandinavian Caledonides

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Johanna Holmberg; [2017]
    Keywords : Seve Nappe Complex; COSC-1; Raman spectroscopy; QuiG barometry; kyanite-garnet gneiss; Lu-Hf garnet geochronology; Seveskollan; COSC-1; Raman spektroskopering; QuiG barometri; kyanit-granatförande gnejs; Lu-Hf granat geokronologi;

    Abstract : The Scandinavian Caledonides are defined by long transported thrust sheets emplaced in a nappe stratigraphic succession onto the Paleozoic Baltica platform, as a result of the collision between the paleo-continents Baltica and Laurentia. This Palaeozoic collisional orogen is nowadays exposed at mid-crustal levels, thus provides an excellent ground for in situ studies of mountain building processes. READ MORE

  5. 4. Evaluation of DC resistivity and time-domain IP tomography for bedrock characterisation at Önneslöv, Southern Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Daniel Preis Bergdahl; [2016]
    Keywords : bedrock; Cole-Cole; resistivity; induced polarization; dyke; weathering; Earth and Environmental Sciences;

    Abstract : For both construction and exploration purposes, knowledge of the subsurface is important. Geophysical exploration methods can be used to acquire an overview of an area on which further investigations can be based. READ MORE

  6. 5. Metamorphic Evolution of the Tjeliken Garnet-Phengite Gneiss, Northern Jämtland, Swedish Caledonides

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Barbro Andersson; [2016]
    Keywords : Seve Nappe Complex; Scandinavian Caledonides; high-pressure metamorphism; U Pb zircon geochronology; garnet-phengite gneiss; Seveskollan; skandinaviska Kaledoniderna; högtrycksmetamorfos; uran-bly datering; högtrycksgnejs;

    Abstract : The Tjeliken Mountain in northern Jämtland, central Scandinavian Caledonides is by most authors considered to belong to the Lower Seve Nappe Complex (SNC). However, recently P-T conditions similar to the Middle Seve have been constrained for the eclogite at the top of the mountain, revitalizing the tectonic debate about Tjeliken. READ MORE