The eastern Tonale fault zone: a ‘natural laboratory’ for crystal plastic deformation of quartz over a temperature range from 250 to 700 °C

S-C Mylonites

Shear zone geometry: A review

During the quadrennial term 1979–1982, major advances have been made in our knowledge of the rheology of the oceanic lithosphere by the skillful combination of experimental and theoretical rock mechanics, seismology and marine geophysics in increasingly sophisticated models for the flexure of the oceanic lithosphere at seamounts and island chains, along transform faults, and at subduction zones. The relative simplicity of plate bending geometry, thermal history, and mineralogical and chemical compositions of the oceanic plates in these settings make the geophysical observations very powerful constraints on the in situ rheology of the oceanic lithosphere. In the first part of this paper, I review the laboratory work on materials appropriate to the oceanic lithosphere with emphasis on contributions during the quadrennial period and the need for future work. The important results of flexure models incorporating realistic material properties are then summarized.

Rheology of the lithosphere

On mylonites in ductile shear zones

Geological significance of recovery and recrystallization processes in quartz

The effects of folding on the C-axis fabrics of a quartz mylonite

On the structure of grain boundaries in tectonites

Microstructural variation of an axial plane cleavage around a fold — a H.V.E.M. study

Shear heating associated with movement along the Alpine Fault, New Zealand

S.H. White

Papers

Geological significance of recovery and recrystallization processes in quartz

The effects of folding on the C-axis fabrics of a quartz mylonite

On the structure of grain boundaries in tectonites

Microstructural variation of an axial plane cleavage around a fold — a H.V.E.M. study

Shear heating associated with movement along the Alpine Fault, New Zealand