. Deep borehole surveys and problems. Boring. Fig. 180. both of the points A or C drop a perpendicular on to this strike line and complete the right-angle dip triangle by setting off the depth of the point concerned respecting the. Fig. 181. B depth normal to this line. For example, AF is normal to BE the strike and FG = A depth minus B depth = 800 - 550 = 250 ft. Hence AGF is the amount of dip. Check with CH normal to strike and HJ = 550 — 200 = 350 ft., the difference in depth of C and B. This again gives the amount of dip, and its direction is from F toward A the lowest Please note

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. Deep borehole surveys and problems. Boring. Fig. 180. both of the points A or C drop a perpendicular on to this strike line and complete the right-angle dip triangle by setting off the depth of the point concerned respecting the. Fig. 181. B depth normal to this line. For example, AF is normal to BE the strike and FG = A depth minus B depth = 800 - 550 = 250 ft. Hence AGF is the amount of dip. Check with CH normal to strike and HJ = 550 — 200 = 350 ft., the difference in depth of C and B. This again gives the amount of dip, and its direction is from F toward A the lowest Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Haddock, M. H. (Marshall Henry). New York, McGraw-Hill

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