Strain distribution in a fold in the West Norwegian Caledonides

摘要: Abstract Strain has been measured from clasts within a deformed conglomerate layer at 17 localities around an asymmetric fold in the Rundemanen Formation Bergen Arc System, West Norwegian Caledonides. is very high and marked gradient strain ellipsoid shape exists. To either side of fold, bed extreme flattening type. In especially on lower closure, constrictional. Mathematical models perturbations flow glacial ice have produced folds same geometry as this with strikingly similar pattern finite strain. The pattern, well other field observations, suggest that developed passively, result perturbation shear zone, where was accommodated by simple accompanied extension along Y .