Chapter 5
Deformation and flow
A clear separation between geometrical and dynamic
considerations was maintained by Becker, the
American geologist, at a very early date, and he
referred to the English physicist Thomson (Lord Kelvin),
who says very clearly: ‘We can see, therefore, that there
are many attributes of movement, displacement, and
deformation which can be considered independently
of force, mass, chemical composition, elasticity, heat,
magnetism and electricity; and it is of greatest use to
science for such properties to be considered as a first
step’ (Sander, 1970, p. 12).
Nearly undeformed (upper left) and deformed (lower right)
oöids with spherulitic cores viewed in thin section. Matrix is
calcite with some mud and average ratios of long to short
axes are 1.16 and 1.56 respectively. Samples from near
Harrisonburg, VA. Reprinted from Cloos (1971, Plates 9 and
11) with permission of The John Hopkins University Press.
Deformation and flow
A clear separation between geometrical and dynamic
considerations was maintained by Becker, the
American geologist, at a very early date, and he
referred to the English physicist Thomson (Lord Kelvin),
who says very clearly: ‘We can see, therefore, that there
are many attributes of movement, displacement, and
deformation which can be considered independently
of force, mass, chemical composition, elasticity, heat,
magnetism and electricity; and it is of greatest use to
science for such properties to be considered as a first
step’ (Sander, 1970, p. 12).
Nearly undeformed (upper left) and deformed (lower right)
oöids with spherulitic cores viewed in thin section. Matrix is
calcite with some mud and average ratios of long to short
axes are 1.16 and 1.56 respectively. Samples from near
Harrisonburg, VA. Reprinted from Cloos (1971, Plates 9 and
11) with permission of The John Hopkins University Press.