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TECTONICS, VOL. 9, NO. 5, PAGES 1097-1111, OCTOBER 1990 UPLIFF OF DEEP CRUST DURING
 

Summary: TECTONICS, VOL. 9, NO. 5, PAGES 1097-1111, OCTOBER 1990
UPLIFF OF DEEP CRUST DURING
OROGENIC EXTENSIONAL COLLAPSE: A
MODEL BASED ON FIELD STUDIES IN
THE SOGN-SUNNFJORD REGION OF
WESTERN NORWAY
Torgeir B. Andersenand Bj0m Jamtveit
Departmentof Geology,Universityof Oslo,
Oslo, Norway
Abstract.The WesternGneissRegion
(WGR) in Norway experiencedhigh-pressure
metamorphismduringSilurian-Devonian
continent-continentcollision.The eclogite-
bearinglower crestis separatedfrom the
middleanduppercrestby majordetachment
zonesformedduringextensionalcollapseof the
orogen;formationof the Devonianbasinsis
related to the extension. The footwall of the
detachmentzonescomprisesthreestructuraland
metamorphiczones.The upperzone,zone 1, is

  

Source: Andersen, Torgeir Bjørge - Centre for Physics of Geological Processes & Department of Geosciences, Universitetet i Oslo

 

Collections: Geosciences