CE is the trace of the horizon on the vertical section. When high temperatures are not a factor, much larger specimens, several feet long, may be used. The compressibility is the reciprocal of the bulk modulus. If the direction perpendicular to the contours is selected, then the apparent dip is the true dip. Continued movement of this interior will subject the consolidated shell to stresses that are systematically related to the structures formed in the flow stage.
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