Multi-stage development of Cambrian sedimentary dykes in the Paleoproterozoic granites from the Västervik area (SE Sweden): evidence from macro and microfabrics
N.º 29, International Meeting of Young Researchers in Structural Geology and Tectonics (Part 1)
N.º 29

Multi-stage development of Cambrian sedimentary dykes in the Paleoproterozoic granites from the Västervik area (SE Sweden): evidence from macro and microfabrics

International Meeting of Young Researchers in Structural Geology and Tectonics (Part 1)
  • N. Friese
  • A. Vollbrecht
  • B. Leiss
  • O. Jacke
N. Friese
A. Vollbrecht
B. Leiss
O. Jacke
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Friese, N., Vollbrecht, A., Leiss, B., & Jacke, O. (2011). Multi-stage development of Cambrian sedimentary dykes in the Paleoproterozoic granites from the Västervik area (SE Sweden): evidence from macro and microfabrics. TRABAJOS DE GEOLOGÍA, 29(29). Obtido de https://reunido.uniovi.es/index.php/TDG/article/view/318
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Resumo

Micro and macrofabrics of Cambrian sedimentary dykes formed in Paleoproterozoic granites of the Västervik area in SE Sweden give evidence that periods of dyke formation under tensional stress alternated with periods of compression normal to the dyke walls. Sagging structures together with the preferred orientation of compositional boundaries and long axes of grains/rock fragments parallel to the dyke walls are interpreted as the result of subsidence-controlled flow of unconsolidated fillings during episodes of downward dyke growth.
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