Geological and topographical maps, their interpretation and use, a handbook for the geologist and civil engineer (1911)
Dwerryhouse, Arthur Richard, 1867- · London, E. Arnold · leaf 68
n^0° 2■ -342sin 6= -34:2/2 = 171. On consulting a table of natural sines, it will be found that•171 is the sine of 9° 51, which is therefore the angle ofdip required. Apart from the actual calculation of the angle of dip,it may generally be assumed that where the outcrop of a —» miliumItiiiniit… … rock is narrow the dip is steeper than where the bed occu-pies a wider belt of country. In this connection it must be borne in mind thatinclined beds are in most instances parts of folds (see p. 31),and that, as a consequence, the dip of a bed varies con-tinuously, and it must be remembered that…
Cartography · Geology · Topographical drawing
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.