Sökning: "Seve Nappe Complex"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Seve Nappe Complex.

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

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

   Sammanfattning : 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. LÄS MER

3. 2. Assembly of the Caledonian Orogenic Wedge, Jämtland, Sweden

   Författare :Hagen Bender; Uwe Ring; Bjarne SG Almqvist; Rob Strachan; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; collisional orogeny; Scandinavian Caledonides; Seve Nappe Complex; Köli Nappe Complex; in-sequence thrusting; out-of-sequence thrusting; imbrication; nappe stacking; orogenic wedge assembly; Rb–Sr geochronology; rock magnetism; anisotropy of magnetic susceptibility; Geology; geologi;

   Sammanfattning : Collisional orogeny creates the largest mountain belts on Earth. The Caledonides of Scandinavia are a deeply eroded, ancient mountain belt, which today exposes a deep section through the former orogenic interior. LÄS MER

4. 3. Early structural and metamorphic evolution of the Scandinavian Caledonides: a study of the eclogite-bearing Seve Nappe Complex at the Arctic Circle, Sweden

   Författare :Lena Gunlög Albrecht; Berggrundsgeologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; oblique compression.; C -type shear bands; anastomozing shear zones; tubular folds; lineation-parallel folds; northern Sweden; Grapesvare Nappe; Seve Nappe Complex; Finnmarkian; Eclogite; corona dolerite; Petrology; mineralogy; geochemistry; Petrologi; mineralogi; geokemi;

   Sammanfattning : In the Seve Nappe Complex of the Swedish Caledonides, coronitic diabases pass into eclogites; sometimes the transition occurs within one and the same boudin. Calculated pressure-temperature conditions for the eclogite facies stage are 20-27 kbar and 650-750°. LÄS MER

5. 4. Deep subduction of the Seve Nappe Complex in the Scandinavian Caledonides

   Författare :Iwona Klonowska; Jarosław Majka; Peter Lazor; Marian Janák; Bjarne Almqvist; Jane Gilotti; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; geothermobarometry; thermodynamic modelling; Raman spectroscopy; diamond; ultrahigh-pressure metamorphism; eclogite; peridotite; gneiss;

   Sammanfattning : This thesis seeks to improve our understanding of the processes involved in continental collision zones, with a particular focus on subduction-exhumation. The main objective of this work has been to define the tectonometamorphic evolution of the deeply subducted Seve Nappe Complex (SNC) in the Scandinavian Caledonides. LÄS MER

7. 5. The Köli Nappe complex in Tännforsfältet western Jämtland, Swedish Caledonides

   Författare :Monica Beckholmen; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : This dissertation presents the Köli Nappe Complex of Tännforsfältet, an area of some 1200 km2 of volcano-sedimentary eugeoclinal rocks occurring in a shallow synformal basin, the Tännforsen Synform. The rocks have been metamorphosed under greenschist-lower amphibolite facies conditions. LÄS MER