Agricultural geology . Vertical fault with upthrow to the left.. Vertical fault with downthrow to the leftFig 42. intersect the surface at all. When dealing with problemsconnected with faulting the methods briefly outhned above canbe applied successfully to the solving of the simpler problems.The effects of faulting of various kinds in repeating andsuppressing the outcrops of inclined strata are dealt with inChapter i (see p. 23 and Figs. 12 and 15). When deaUng with inchned strata, in addition to the slopeof the groimd and the thickness of the beds, we have to takeinto account also the direct

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Agricultural geology . Vertical fault with upthrow to the left.. Vertical fault with downthrow to the leftFig 42. intersect the surface at all. When dealing with problemsconnected with faulting the methods briefly outhned above canbe applied successfully to the solving of the simpler problems.The effects of faulting of various kinds in repeating andsuppressing the outcrops of inclined strata are dealt with inChapter i (see p. 23 and Figs. 12 and 15). When deaUng with inchned strata, in addition to the slopeof the groimd and the thickness of the beds, we have to takeinto account also the direction and amount of the dip. Ininclined strata the thickness is not measured vertically, but itis the least distance between the upper and lower surfaces ofthe bed, perpendicular to the bedding planes whatever theinclination (dip) may be. If the beds are vertical therefore thethickness is measured horizontally. As a matter of conveniencevertical strata may be considered first. Here outcrop and 190 GEOLOGICAL MAPS AND SECTIONS [ch. strike^ coincide and the width