Folding

Folding is of major concern in the interpretation of ice core records.

Abstract from my et al paper:

Our knowledge of past climate conditions comes largely from ice cores and other sedimentary records. Interpretation of these records relies on the assumption that the stratigraphic layering has remained intact. For marine and lacustrine sedimentary cores, bioturbation and tectonic displacements are major concerns. For ice core records, layer stratigraphy is usually assumed to have remained intact except possibly very close to the bed. However, the loss of correlation of d18O (Alley and others, 1995) and other climatic indicators below 2750 m depth (some 270 m above the bed) in the ice core records from GRIP and GISP2, Greenland, and visual observations of small scale folding in the bottom 1/3 of the GISP2 core, points to the possibility of layer disturbance at considerable heights above the bed near an ice divide (Alley and others, 1997).

Folding in strongly anisotropic media
A talk given at the IGS meeting on Ice Cores and Climate, Kangalussuaq, Greenland, 17-23 August, 2001.

Fellingar

Fellingar valda miklum usla vi­ t˙lkun Ýskjarnagagna. 

Stefnuhneig­ getur ■ar haft ßhrif.

Vinsamlegast kÝki­ ß ßgripi­ hÚr til vinstri.

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