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Cambridge University Press
Stereographic Projection Techniques for Geologists and Civil Engineers / Edition 2

Stereographic Projection Techniques for Geologists and Civil Engineers / Edition 2

by Richard J. Lisle, Peter R. Leyshon


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Product Details

ISBN-13: 9780521535823
Publisher: Cambridge University Press
Publication date: 04/28/2004
Edition description: New Edition
Pages: 124
Product dimensions: 8.62(w) x 10.87(h) x 0.28(d)

Table of Contents

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.

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