Search for dissertations about: "Erik Sturkell"

Found 4 swedish dissertations containing the words Erik Sturkell.

  2. 1. The origin of the marine Lockne impact structure, Jämtland

    Author : Erik Sturkell; Christian Keoberl; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Lockne; Jämtland; Earth sciences; Geovetenskap; allmän och historisk geologi; General and Historical Geology;

    Abstract : The Lockne impact structure in Jämtland (63o00'20"N, 14o49'30"E), formed in the Middle Ordovician at approximately 455 Ma. The structure is a concentric crater with a total diameter of 13.5 km. The impact took place in a marine environment. READ MORE

  4. 2. Geology of Lagoa das Furnas, a crater lake on São Miguel, Azores archipelago

    Author : Thommy Andersson; Otto Hermelin; Martin Jakobsson; Alasdair Skelton; Erik Sturkell; Richard Gyllencreutz; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Lagoa das Furnas; Azores; crater lake; geophysical mapping; tephrochronology; volcanic dome; Marine Geology; maringeologi;

    Abstract : In this thesis, the results from a geophysical mapping and coring campaign of Lagoa das Furnas are presented. Specific focus is placed on the origin of a subaqueous volcanic cone mapped in the southern part of the lake. READ MORE

  5. 3. Ionizing Radiation in Concrete and Concrete Buildings : Empirical Assessments

    Author : Magnus Döse; Johan Silfwerbrand; Erik Sturkell; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Byggvetenskap; Civil and Architectural Engineering;

    Abstract : One of the major issues with radiation from the natural isotopes 40K, 226Ra (238U) and 232Th and their decay products is the forthcoming legislation from the European Commission in relation to its Basic Safety Directive (2014). The European legislation is mandatory and could not be overthrown by national legislation. READ MORE

  6. 4. Experimental, petrological and geochemical investigations of ikaite (CaCO3·6H2O) formation in marine environments

    Author : Elin Tollefsen; Alasdair Skelton; Carl-Magnus Mörth; Erik Sturkell; Andrew Putnis; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ikaite; petrology; experiment; geochemistry; marine environments; pseudomorphs; calcium carbonate; Ikka Fjord; glendonite; nepheline; siderite; paleotemperature; carbonatite; Geology; geologi;

    Abstract : Carbonates are a group of minerals that play an essential role in several processes on planet Earth, for example in the global carbon cycle and as a product of biomineralisation. Calcite (CaCO3) is by far the most common mineral in the carbonate group, and the stable form of carbonate at Earth surface conditions. READ MORE