Sökning: "alum shale"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden alum shale.

  1. 1. Environmental impact of alum shale mining in Kvarntorp, Närke, Sweden

    Författare :Kristina Åhlgren; Mattias Bäckström; Stefan Karlsson; Roger Herbert; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; alum shale; black shale; oil shale; Kvarntorp; uranium; surface water; groundwater; open pits;

    Sammanfattning : Due to scarcity of imported liquid fuel during World War II, alum shale was mined for oil production in the Kvarntorp area 1942-1966. The shale contains both organic matter (kerogen) and elevated concentrations of trace elements such as molybdenum, nickel, uranium and vanadium. LÄS MER

  3. 2. Weathering of mining waste rock containing alum shale and limestone

    Författare :Erik Puura; KTH; []
    Nyckelord :;

    Sammanfattning : Geochemical processes occurring in the waste rock dumps ofan old phosphate mine, located in Maardu, northem Estonia, havebeen studied and modelled. The waste rock contains pyritic,metalliferous and organic-rich shale, as well as limestone.Production of acidity during pyrite oxidation is a potentialmechanism for heavy metal release. LÄS MER

  4. 3. Thermal Modelling of the Caledonian Basin, Scandinavia and a Northern North Sea Profile

    Författare :Jörgen Samuelsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; petroleum; vitrinite reflectance; thermal maturation; flexural rigidity; heat flow; suppression; thermal conductivity; North West Shelf; Alum Shale;

    Sammanfattning : The reason for the registered high paleotemperatures of the Scandinavian Alum Shale was investigated by heat flow modelling constrained by vitrinite-like reflectance. The behaviour of the lithosphere under a load was modelled and the paleotemperatures were explained by burial of the Alum Shale in a foreland basin, developing during the Caledonian orogeny. LÄS MER

  5. 4. Hydrauliskt kalkbruk Produktion och användning i Sverige vid byggande från medeltid till nutid

    Författare :Sölve Johansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Limestone; Roman cement; pozzolana; hydraulic lime; alum shale; hydration; natural cement; building conservation; building lime; historic mortar; brickdust;

    Sammanfattning : This dissertation in its entirety, i.e. LÄS MER

  7. 5. Bacteria and geochemistry in a former uranium open pit mine - mobilization of trace metals

    Författare :Frida Edberg; Sara J. M. Holmström; Hans Borg; Stephan M. Kraemer; Stockholms universitet; []
    Nyckelord :Pseudomonas fluorescens; siderophore; Ranstad; alum shale; iron; pyrosequencing; redox; size fractionation; NATURAL SCIENCES; NATURVETENSKAP; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : In mining areas around the world, chemical and biotic processes have lead to the release of toxic substances, e.g. metals. Microbial processes influence metal speciation, while the chemical environment shapes and controls microbial populations. LÄS MER