Stereographic Projection Techniques

for Geologists and Civil Engineers

Peter R. Leyshon, Richard J. Lisle

112 pages, parution le 05/04/2004 (2^eme édition)

Ajouter à une liste

Indisponible

Résumé

The stereographic projection is an essential tool in the fields of structural geology and geotechnics, which allows three-dimensional orientation data to be represented and manipulated. This book has been designed to make the subject as accessible as possible. It gives a straightforward and simple introduction to the subject and, by means of examples, illustrations and exercises, encourages the student to visualise the problems in three dimensions. Students of all levels will be able to work through the book and come away with a clear understanding of how to apply these vital techniques. This new edition contains additional material on geotechnical applications, improved illustrations and links to useful web resources and software programs. It will provide students of geology, rock mechanics, geotechnical and civil engineering with an indispensable guide to the analysis and interpretation of field orientation data.

Sommaire

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

Voir tout

Replier

Caractéristiques techniques

	PAPIER
Éditeur(s)	Cambridge University Press
Auteur(s)	Peter R. Leyshon, Richard J. Lisle
Parution	05/04/2004
Édition	2^eme édition
Nb. de pages	112
Format	22 x 27,5
Couverture	Broché
Poids	380g
Intérieur	Noir et Blanc
EAN13	9780521535823
ISBN13	978-0-521-53582-3