Stereographic projection techniques for geologists and civil engineers /
Stereographic projection techniques
Richard J. Lisle, Peter R. Leyshon.
- 2nd ed.
- Cambridge, UK ; New York : Cambridge University Press, 2004.
- viii, 112 p. : ill. ; 29 cm.
Rev. ed. of: Stereographic projection techniques in structural geology / Peter R. Leyshon, Richard J. Lisle. 1996.
Geological structures of planar type Measuring and recording the orientation of planar structures Geological structures of linear type Measuring and recording the orientation of lines Why do we need projections? Idea of stereographic projections Approximate method of plotting lines and planes Exercises 1 The stereographic net Precise method of plotting planes Precise methods for plotting lines 1 Precise methods for plotting lines 2 Intersection of two planes Plane containing two lines Apparent dip The angle between two lines The angle between two planes The plane which bisects the angle between two planes Projecting a line onto a plane Stereographic and equal-area projections The polar net Analysing folds 1 Analysing folds 2 Analysing folds 3 Analysing folds 4 Folds and cleavage Analysing folds with cleavage Faults 1 Faults 2 Cones/small circles Plotting a cone Rotations about a horizontal axis Example of rotation about a horizontal axis Example of rotation Rotation about an inclined axis Example of rotation about an inclined axis Density contouring on stereograms Superposed folding 1 Superposed folding 2 Example of analysis of folds Geometrical analysis of folds Example of analysis of jointing Geotechnical applications Assessing plane failure 1 Assessing plane failure 2 Assessing wedge failure Exercises 2 Solutions to exercises Computer software for plotting stereograms Further reading Stereographic (Wulff) equatorial net Equal-area (Lambert/Schmidt) equatorial net Equal-area polar net Kalsbeek counting net Classification chart for fold orientations Some useful formulae Alternative method for plotting planes and lines