442 



WRIGHT: A NEW DIP CHART 



7 o" e<fo9 



C <4 5' 



C > 45 



Fig. 2. Dip-chart. Graphical solution of the equation tan C = sin 5 tan A, 

 in which A = true dip of bed, B = angle between line of strike of bed and ver- 

 tical section, C = inclination, from the horizontal, of trace of bed on vertical 

 section (apparent dip of bed in vertical section). For values of C < 45° use 

 diagram a] for C > 45° use diagram b. In these diagrams the arrows indicate 

 the proper lines to follow in solving the equation for given values of A and B. 



