Cover image of: Geza Kunetz - Principles of Direct Current - Resistivity Prospecting

Geza Kunetz:

Principles of Direct Current - Resistivity Prospecting

1966. XVI, 103 pages, 58 figures, 17x24cm, 500 g
Language: English

(Geoexploration Monographs, Number 1)

ISBN 978-3-443-13001-5, bound, price: 15.00 €

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Keywords

geoexploration • geophysics

Contents

Synopsis top ↑

After an introduction which begins with a brief history and a general view of the subject, three chapters deal successively with potential maps, resistivity profiles and maps, and electrical soundings. In each of the chapters there is first a review of the generalities, then an examination of the methods of application, and finally, a look at the principles of interpretation. This latter term is taken in a restricted sense and refers to the influence of various structures on the measurements.

Table of Contents top ↑

List of Illustration VII
Errata IX
Presentation XI
Foreword XII
Chapter I. Introduction 1
1. History 1
2. Rock Resistivities 1
3. Potential Distribution in the Earth 5
4. Alternating Currents 8
5. Exploration Principles and Procedures 9
Chapter II. Equipotential Maps 12
1. General 12
The Effect of Heterogeneities 13
3. The Effect of Anisotropy 18
4. Conclusions 23
Chapter III. Resistivity Profile and Maps 24
1. General 24
2. Configurations 24
3. Methods of Application 29
3a. Horizontal Profiling 29
3b. The Rectangle Method 31
3e. Presentation of Results 35
4. Effect of Various Structures 35
4a. AB Rectangle 43
4b. Horizontal Profiling 43
5. Conclusions 48
Chapter IV. Electrical Soundings 50
1.Genera1 50
2.Configurations and their use 51
2a.Configurations 51
2b. Presentation of Results 54
3. Study of Horizontal Stratification 55
3a. Relation between the Resistivity Distribution and the Electrical Sounding
Curve 57
3b. Theoretical Electrical Sounding Curves, oomputed by exact Methods 61
3e. Catalogues of Theoretical Curves 63
3d. Approximate Construction of Electrical Sounding Curves 65
4 The Effects of Other Structures 71
4a. Dipping Contacts 71
4b. Vertical Contacts 73
4c. Other Structures 77
5. Interpretation of Electrical Soundings 85
Appendix 91
1. Determination of the Potential Distribution in a Layered Medium 91
2. Practical Calculation of Apparent Resistivities 93
2a. Method of Series 93
2b. Method of Decomposition 94
20. Method of Numerical Integration 97
References 100
Index 102