Balanced cross sections
A cross section with internally consistent geometry:
Concepts of balancing cross sections applies to all kinds of faulting and
deformation, but was first developed in thrust systems. Removal of finite strain from deformed rocks can give rise to their
shapes in undeformed state. The fig is reproduced after Ramsay and Huber
1987. Morcles nappe, the lowest of the Helvetic nappes is taken as an
example and a very simplified method is shown to find the initial shape of
the nappe before its collapse under gravity.Balance
occurs when bed lengths and cross-sectional area are equal in both
deformed and undeformed state (except with volume loss due to
consolidation and dissolution.
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