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Geological Society, London, Special Publications; 1981; v. 9; p. 235-239;
DOI: 10.1144/GSL.SP.1981.009.01.21
© 1981 Geological Society of London

Caledonides

The strain profile above a major thrust fault, Finnmark, N Norway

N. J. Milton & G. D. Williams

Department of Geology, University College, P.O. Box 78, Cardiff, U.K.

The base of the Laksefjord Nappe, Finnmark, N Norway consists of a strained conglomerate. Field studies of the deformation suggest a simple strain profile, with strain depending on height above the basal thrust within the Nappe. A combination of simple shear deformation, related to movement on, or initiation of, the basal thrust, with a relatively constant flattening component is proposed. A mathematical model based on down surface slope stress and the steady state flow law is suggested for the simple shear component of the strain.





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S. F. Wojtal
The nature and origin of asymmetric arrays of shear surfaces in fault zones
Geological Society, London, Special Publications, 2001; 186: 171 - 193.
[Abstract] [PDF]