Lisle, Richard J.
Stereographic projection techniques for geologists and civil engineers Stereographic projection techniques Richard J. Lisle, Peter R. Leyshon - 2nd ed. - London : Cambridge University Press, c2004. - viii, 112 p. : ill. ; 29 cm.
Preface; Acknowledgements; 1. Geological structures of planar type; 2. Measuring and recording the orientation of planar structures; 3. Geological structures of linear type; 4. Measuring and recording the orientation of lines; 5. Why do we need projections?; 6. Idea of stereographic projection; 7. Approximate method of plotting lines and planes; 8. Exercises 1; 9. The stereographic net; 10. Precise method of plotting planes. Great circles and poles; 11. Precise methods for plotting lines 1. Where the plunge of the line is known; 12. Precise methods for plotting lines 2. Where the line is known from its pitch; 13. The intersection of two planes; 14. Plane containing two lines; 15. Apparent dip; 16. The angle between two lines; 17. The angle between two planes; 18. The plane that bisects the angle between two planes; 19. Projecting a line onto a plane; 20. Stereographic and equal-area projections; 21. The polar net; 22. Analysing folds 1. Cylindricity and plunge of axis; 23. Analysing folds 2. Inter-limb angle and axial surface; 24. Analysing folds 3. Style of folding; 25. Analysing folds 4. The orientation of folds; 26. Folds and cleavage; 27. Analysing folds with cleavage; 28. Faults 1. Calculating net slip; 29. Faults 2. Estimating stress directions; 30. Cones/small circles; 31. Plotting a cone; 32. Rotations about a horizontal axis; 33. Example of rotation about a horizontal axis. Restoration of tilt of beds; 34. Example of rotation. Restoring palaeocurrents; 35. Rotation about an inclined axis; 36. Example of rotation about an inclined axis. Borehole data; 37. Density contouring on stereograms; 38. Superposed folding 1; 39. Superposed folding 2. Sub-area concept; 40. Example of analysis of folds. Bristol area; 41. Geometrical analysis of folds. Examples from SW England; 42. Example of analysis of jointing. Glamorgan coast; 43. Geotechnical applications. Rock slope stability; 44. Assessing plane failure. Frictional resistance; 45. Assessing plane failure. Daylighting; 46. Assessing wedge failure; 47. Exercises 2; 48. Solutions to exercises; Appendices; Availability of computer programs for plotting stereograms; Further reading; Index.
This revised edition gives a straightforward introduction to stereographic projection techniques and uses examples, illustrations and exercises to encourage students to visualise geological problems in three dimensions. It will provide students of geology and civil engineering with an indispensable guide to the analysis and interpretation of field orientation data.
9780521535823
2003069076
Spherical projection
Geology, Structural--Maps
Geological mapping
551.80223 LI ST
Stereographic projection techniques for geologists and civil engineers Stereographic projection techniques Richard J. Lisle, Peter R. Leyshon - 2nd ed. - London : Cambridge University Press, c2004. - viii, 112 p. : ill. ; 29 cm.
Preface; Acknowledgements; 1. Geological structures of planar type; 2. Measuring and recording the orientation of planar structures; 3. Geological structures of linear type; 4. Measuring and recording the orientation of lines; 5. Why do we need projections?; 6. Idea of stereographic projection; 7. Approximate method of plotting lines and planes; 8. Exercises 1; 9. The stereographic net; 10. Precise method of plotting planes. Great circles and poles; 11. Precise methods for plotting lines 1. Where the plunge of the line is known; 12. Precise methods for plotting lines 2. Where the line is known from its pitch; 13. The intersection of two planes; 14. Plane containing two lines; 15. Apparent dip; 16. The angle between two lines; 17. The angle between two planes; 18. The plane that bisects the angle between two planes; 19. Projecting a line onto a plane; 20. Stereographic and equal-area projections; 21. The polar net; 22. Analysing folds 1. Cylindricity and plunge of axis; 23. Analysing folds 2. Inter-limb angle and axial surface; 24. Analysing folds 3. Style of folding; 25. Analysing folds 4. The orientation of folds; 26. Folds and cleavage; 27. Analysing folds with cleavage; 28. Faults 1. Calculating net slip; 29. Faults 2. Estimating stress directions; 30. Cones/small circles; 31. Plotting a cone; 32. Rotations about a horizontal axis; 33. Example of rotation about a horizontal axis. Restoration of tilt of beds; 34. Example of rotation. Restoring palaeocurrents; 35. Rotation about an inclined axis; 36. Example of rotation about an inclined axis. Borehole data; 37. Density contouring on stereograms; 38. Superposed folding 1; 39. Superposed folding 2. Sub-area concept; 40. Example of analysis of folds. Bristol area; 41. Geometrical analysis of folds. Examples from SW England; 42. Example of analysis of jointing. Glamorgan coast; 43. Geotechnical applications. Rock slope stability; 44. Assessing plane failure. Frictional resistance; 45. Assessing plane failure. Daylighting; 46. Assessing wedge failure; 47. Exercises 2; 48. Solutions to exercises; Appendices; Availability of computer programs for plotting stereograms; Further reading; Index.
This revised edition gives a straightforward introduction to stereographic projection techniques and uses examples, illustrations and exercises to encourage students to visualise geological problems in three dimensions. It will provide students of geology and civil engineering with an indispensable guide to the analysis and interpretation of field orientation data.
9780521535823
2003069076
Spherical projection
Geology, Structural--Maps
Geological mapping
551.80223 LI ST