page_title: Nordfjord-Sogn Detachment
hierarchical_section_title: Nordfjord-Sogn Detachment
caption_attribution_description: Norsk nynorsk: Biletet er teke frå den nedlagde garden Rinde i Hyllestad kommune i Ytre Sogn. Det viser gardshus og den austre enden av Lihestplatået. Fjelltoppen på biletet er Gygrekjeften, 710 moh.
context_page_description: The Nordfjord—Sogn Detachment is a major extensional shear zone up to 6 km in thickness, which extends about 120 km along strike from Nordfjord to Sognefjord, bringing Devonian continental coarse clastic sedimentary rocks into close contact with eclogite facies metamorphic rocks of the Western Gneiss Region. It formed towards the end of the Caledonian Orogeny and was mainly active during the Devonian. It has an estimated displacement of at least 70 km and possibly as much as 110 km. It was reactivated during the Mesozoic and may have influenced the development of fault structures in the North Sea rift basin.
context_section_description: The Nordfjord—Sogn Detachment (NSD) is a major extensional shear zone up to 6 km in thickness, which extends about 120 km along strike from Nordfjord to Sognefjord, bringing Devonian continental coarse clastic sedimentary rocks into close contact with eclogite facies metamorphic rocks of the Western Gneiss Region. It formed towards the end of the Caledonian Orogeny and was mainly active during the Devonian. It has an estimated displacement of at least 70 km and possibly as much as 110 km. It was reactivated during the Mesozoic and may have influenced the development of fault structures in the North Sea rift basin.
caption: Lihesten near Hyllestad made of well-jointed Devonian conglomerates (part of the Solund Basin) in fault contact with mylonites of the detachment
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