The experimental basis for interpreting particle and magnetic fabrics of sheared till

Reconstructing ice-sheet dynamics from subglacial sediments and landforms. Special issue

Auteurs :
IVERSON, N.R.
HOOYER, T.S.
THOMASON, J.F.
GRAESCH, M.
SHUMWAY, J.R.
Ó COFAIGH, C.

Description :
This paper is aimed at exploring whether there is a simple, reproducible relationship between fabric development and shear-strain magnitude that could be used to help test the bed-deformation model using the geologic record. Four basal tills and viscous putty have been sheared to high strains with a large ring-shear device. Three extensive sets of experiments have been performed, each with results that bear on the behavior of a different particle-size fraction (fine gravel, sand and silt/clay). This paper fully synthetizes these results and provides additional data to summarize the experimental basis for interpreting till fabric in the context of the bed-deformation model.


Type de document :
Article de monographie

Source :
Earth surface processes and landforms, issn : 0197-9337, 2008, vol. 33, n°. 4, p. 627-645, nombre de pages : 19, Collation : Illustration, Références bibliographiques : 3 p.

Date :
2008

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley