Changes

For understanding the geometry of structures (folds and faults), an undistorted view of the shapes of geological units is important. Logs can be reduced in size with only the major units represented ([[:file:geological-cross-sections_fig1.png|Figure la]]). Where well control is dense and computers are available, it may be best to construct structural cross sections by using gridded and contoured stratigraphic surfaces and drawing each horizon as one would a topographic profile.

For understanding the geometry of structures (folds and faults), an undistorted view of the shapes of geological units is important. Logs can be reduced in size with only the major units represented ([[:file:geological-cross-sections_fig1.png|Figure la]]). Where well control is dense and computers are available, it may be best to construct structural cross sections by using gridded and contoured stratigraphic surfaces and drawing each horizon as one would a topographic profile.

If it is important to demonstrate the control of structure on fluid contacts, it may be vital to show the primary log data from which these are interpreted (see [[Fluid contacts]]). Other data, such as dips from a dipmeter log, can be schematically represented (see [[Dipmeters]]).

If it is important to demonstrate the control of structure on fluid contacts, it may be vital to show the primary log data from which these are interpreted (see [[Fluid contacts]]). Other data, such as dips from a [[dipmeter]] log, can be schematically represented.

===Vertical and horizontal scale===

===Vertical and horizontal scale===