Interpretation of Geological Structures Through Maps An Introductory Practical Manual

About this book

&i;`This book should be read by Earth scientists wishing to progress rapidly to a fairly advanced level of ability in structural interpretation of geological maps.'&o; Graham Williams.

Contents

Introduction to geological structures; types of planar geological surfaces - planar surfaces arising from erosion and sedimentation, planar surfaces arising from crustal compression, planar surfaces arising from crustal extension; analysis of planar surfaces on geological maps - structure contours, cross-sections, direct measurement of dip and strike, exaggeration of scale, calculation of true and apparent dips, curvi-planar geological surfaces; outcrop shape - outcrop shape, angle of dip and topography, true and apparent thickness, curvi-planar surfaces; linear structures - origin and measurement of linear structures, lines of intersection; analysis of drill-hole data - calculation of dip from bore-hole data, three point problems at surface, exercise. Isopachytes (thickness contours) - calculation of thickness variations; faults and fault movements - assessment of movement across faults, exercise, determination of slip directions on faults; types of fault - classification of faults, listric thrust faults, listric normal faults, linked fault systems, variation in slip along faults, sedimentation and faulting; folds - geometry of folds, map analysis of folds; fold shape - assessment of fold shape fom maps, exercise, types of fold profile geometry, composite cross-sections of folds, section construction for plunging folds; structures associated with folds - minor folds, cleavage and schistosity, use of associated structures in fold analysis; folds and faults - displacement of folds by faults.

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