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Line 53: + + − − [[file:dipmeters_fig5.png|left|thumb|{{figure number|5}}Simple dip model for the description of a normal fault with drag.]]
→Dipmeter presentations
==Dipmeter presentations==
==Dipmeter presentations==
[[file:dipmeters_fig4.png|thumb|300px|{{figure number|4}}Dip data expressed on a standard arrow plot.]]
The most common presentation of dipmeter data is the ''arrow'' or ''tadpole plot'', which is a clever two-dimensional representation of a three-dimensional quantity. In this plot, the base of the arrow is positioned at the depth of the midpoint of the correlation interval, and the distance from the left-hand margin to the base of the arrow is proportional to the true dip angle as calibrated by the scale shown on the heading. The shaft of the arrow points in the downdip direction with true north being straight up the page. [[:file:dipmeters_fig4.png|Figure 4]] is a standard arrow plot that also carries a correlation gamma ray curve and maximum and minimum caliper values. On the right-hand side is a representation of the inclination angle and direction of the tool, which will usually be similar to the deviation of the borehole. A number of other computer generated presentations have been introduced. Many are useful in special situations, but none is a replacement for the arrow plot.
The most common presentation of dipmeter data is the ''arrow'' or ''tadpole plot'', which is a clever two-dimensional representation of a three-dimensional quantity. In this plot, the base of the arrow is positioned at the depth of the midpoint of the correlation interval, and the distance from the left-hand margin to the base of the arrow is proportional to the true dip angle as calibrated by the scale shown on the heading. The shaft of the arrow points in the downdip direction with true north being straight up the page. [[:file:dipmeters_fig4.png|Figure 4]] is a standard arrow plot that also carries a correlation gamma ray curve and maximum and minimum caliper values. On the right-hand side is a representation of the inclination angle and direction of the tool, which will usually be similar to the deviation of the borehole. A number of other computer generated presentations have been introduced. Many are useful in special situations, but none is a replacement for the arrow plot.
==Applications of dipmeters==
==Applications of dipmeters==