Search for dissertations about: "Scandinavian Caledonides"

Showing result 6 - 10 of 11 swedish dissertations containing the words Scandinavian Caledonides.

  2. 6. Deep seismic studies in the western part of the Baltic shield

    Author : Johannes Schmidt; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Geovetenskap; Earth sciences; Geovetenskap; Geofysik med inriktning mot seismologi; Geophysics with specialization in Seismology;

    Abstract : The Caledonides form an ancient orogenic belt at the western margin of the Balticshield and in Scotland. They are the result of a three-part continent collision thattook place c. 430-390 million years ago. READ MORE

  4. 7. Testing Tectonic Concepts in the Seve Nappe Complex, Jämtland, Sweden

    Author : Hagen Bender; Uwe Ring; Bjarne Almqvist; Karin Högdal; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Caledonian orogeny; Seve Nappe Complex; Kinematic analysis; Geology; geologi;

    Abstract : When continental plates collide, one of the involved continents is subducted beneath the other one. As a consequence, the lithosphere thickens along the convergent plate boundary and causes the formation of a mountain belt. READ MORE

  5. 8. U-Pb geochronology of tectonothermal events related to the Rodinia and Gondwana supercontinents -observations from Antarctica and Baltica

    Author : Oskar Paulsson; Berggrundsgeologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; klimatologi; pedology; climatology; Fysisk geografi; geomorfologi; marklära; kartografi; geomorphology; Physical geography; Gondwana; Rodinia; Antarctica; Baltica; Dronning Maud Land; cartography;

    Abstract : This thesis presents data from two areas, Dronning Maud Land, Antarctica, and the Scandinavian Caledonides, Baltica. In addition, a comparative geochronological study is presented. The bedrock of Dronning Maud Land (DML) is dominated by migmatitic gneisses and post-tectonic intrusions. READ MORE

  6. 9. Late Ordovician-Early Silurian facies development and stratigraphy of Jämtland, central Sweden

    Author : Peter Dahlqvist; Berggrundsgeologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biostratigraphy; Sedimentology; Stratigrafi; Stratigraphy; Paleontologi; Palaeontology; Jämtland; provenance; brachiopods; conodonts; Hirnantian; Silurian; Ordovician; glaciation; eustasy; Sedimentologi; sedimentology;

    Abstract : This thesis is based on studies of Lower Palaeozoic sedimentary successions within the central Scandinavian Caledonides. These deposits have been transported by considerable nappe displacement (several kilometres), and are today relatively isolated from the nearest coeval outcrops (Dalarna 250 km, Oslo Region 350 km). READ MORE

  7. 10. Inversion of Magnetotelluric Data Constrained by Borehole Logs and Reflection Seismic Sections

    Author : Ping Yan; Thomas Kalscheuer; Laust Pedersen; Maria Garcia Juanatey; Andreas Junge; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Magnetotellurics; constrained inversion; borehole logs; seismic; COSC; Alnö alkaline and carbonatite; airborne VLF; Geofysik med inriktning mot fasta jordens fysik; Geophysics with specialization in Solid Earth Physics;

    Abstract : This thesis presents two new algorithms for doing constrained Magnetotelluric (MT) inversion based on an existing Occam 2D inversion program. The first algorithm includes borehole resistivity logs as prior information to constrain resistivity directly in the vicinity of boreholes. READ MORE