Scanvic, Jean-Yves

Aerospatial Remote Sensing Geo/ Jean-Yves Scanvic - New Delhi: Taylor & Francis, 2005. - 280 p.

CONTENTS
1. REMOTE SENSING IN GEOLOGY
1.1 Evolution of Geological Mapping 1
1.2 Introduction to Prospecting Technics ^ ^
1.3 History of Application of Remote Sensing in Geological 4
Exploration *- -—.r.
1.4 Present Status of Remote Sensing in Geological Exploration 8
1.5 Methodology Defined 9
1.5.1 Technological aspects 9
1.5.2 How to choose remote-sensing data? 15
1.5.3 Restoration ofdata 18
1.5.4 Methods of interpretation 20
1.5.5 Methods of evaluating interpretation 21
1.5.6 Use of remote sensing in geological exploration 25
2. GEOLOGICAL MAPPING AND REMOTE SENSING 26
2.1 Introduction 26
2.2 Composite Maps 28
2.3 Reconnaissance Maps and Regular Geological Maps 28
2.3.1 Geological mapping and mineralexploration of Gabon 29
Craton and its environs—exploration across borders
2.3.2 Mineral explorationin northernMozambique—importance 30
of mapping support and multicriteria mapping
2.3.3 Mineral prospecting in the Red Sea Hills. Province, 31
Republic ofSudan—role of remote sensing in
exploration of arid regions
2.3.4 Preparation for geochemical prospecting in Miskah 33
Province, Saudi Arabia—problemofsurficial deposits
2.3.5 Regular geological maps 33
2.4 Large-scale Maps 34
2.4.1 Copper Queen region, Zimbabwe—utility of 35
ground-image correspondence
2.4.2 Example ofhydrogeological survey—Kanye region 35
2.4.3 Mineral prospecting in Yemen—updating geological 36
maps usingremote-sensing data
2.4.4 Petroleum exploration—study of a sedimentary basin 37
in Madagascar
Pages
VI
2.4.5 Mapping in Velay 41
2.4.6 Radar geology 42
2.4.7 Mapping ofgranite massifs in temperate zpnes 54
2.5 Conclusions Regarding Geological Mapping 57
2.5.1 Geological mapand remote sensing 57
2.5.2 Role ofremote sensing infuture geologicalmapping 59
3. IMAGE LINEAMENTS 63
3.1 General 64
3.2 Image Lineaments of Structural Origin 66
3.3 Composite Image Lineaments: Their Relation with Metallo- 66
genie and Geological Lineaments
3.4 Image Lineaments and Prospecting 69
3.4.1 Evaluation of image lineaments and multicriteria 69
analysis
3.4.2 Significance ofimage lineaments and their importance 78
in mineral exploration
3.4.3 Statistical analysis ofimage lineaments 84
3.4.4 Remote sensing
and modelling 87
3.4.5 Application ofthermal and rfldar remote sensing in 88
structural geology
3.5 Conclusions Regarding Image Lineaments 100
4. CIRCULAR STRUCTURES 102
4.1 Remote Sensing, a Preferred Tool for Detection of Circular 103
Structures
1 Aerial photography, thefirst means ofdetection 103
4.1.2 Multispectralremote sensing and circular structures 104
4.2 Classification of Circular Structures 106
4.2.1 Morphological classification 106
4.2.2 Scalar classification 108
4.2.3 Spectralclassification 108
4.2.4 Multicriteria classification 109
4.3 Geological Phenomena of Circular Forms 111
4.4 Examples of Detection of Geological Phenomena of Circular 114
Forms on Space Imagery
4.5 Conclusions Regarding Circular Structures 115
5. SPECTRAL SIGNATURES OF MINERALS, ROCKS AND 117
ALTERITES: PROBLEMS OF INTERPRETATION OF .
REMOTELY SENSED DATA
5.1 Spectral Response of Minerals, Rocks and Alterites 118
5.1.1 Physical basis 118
5.1.2 Spectralsignatures of minerals, rocks and alterites 123
5.2 Case Studies 131
5.2.1 Spectral responses ofrocks 131
5.2.2 Spectral responses ofcdteritesand alterations 132
5.3 Perspectives for Utilisation of Spectral Signatures in Remote 142
Sensing
5.3.1 Inferencesfivm laboratory studies 144
5.3.2 Some remarks 145
5.3.3 Foreseeable developments in spectral remotesensing 145
6. REMOTE SENSING, GEOBOTaNY AND GEOLOGICAL 150
LANDSCAPE UNITS
6.1 Geobotanical Concept 151
6.1.1 General 151
6.1.2 Review of vegetative modifications induced by the 151
chemical composition of rocks and soils
6.2 Geobotany and Remote Sensing 155
6.2.1 Detection of vegetation clearings due to toxicity 155
6.2.2 Detection of reflectance modifications of vegetation 155
6.2.3 Study of modifications in vegetation communities 157
6.3 Conclusions Regarding Geobotanical Remote Sensing 159
6.4 Concept of a Geological Landscape Unit 159
6.4.1 General - 159
6.4.2 Concept ofa landscape unit 160
6.4.3 Status of research: Relation between geological sub- 161
stratum and vegetation cover
6.4.4 Perspectives 165
7. GEOLOGY AND DIGITAL IMAGE PROCESSING 167
7.1 General
7.1.1 Preliminary stages ofprocessing 170
7.1.2 Modes of visualisation 170
12 Enhancement Processing 171
7.3 Geometric Processing 171
7.4 Thematic Processing 174
7.5 Special Processing Programs 175
7.6 Multicriteria Analysis 176
7.6.1 Processing irf single-source data 178
7.6.2 Processing of multicriteria data 182
in Conclusions: Present Status of Digital Processing of Remote 201
Sensing Data in Geology
8. CONCLUSIONS 201
8.1 Example of Mineral Prospecting 204
8.2 GIS and Multivariate Analysis 207
vii
VIII
8.3 Future Efforts for Integrating Remote Sensing into Geological 207
Investigations
8.4 Improving the Performance of Digital Analysis 208
8.5 Developments in Utilisation of Spatial Digital Elevation 209
Models
8.6 Developing Computer-aided 3-D Photo Interpretations 210
8.7 Forecast Modelling 212
8.8 Development of Mapping Technology in Future 213
8.9 Portable Radiometers for in-situ Measurement of Physical 214
and Chemical Properties of Geomaterials
8.10 Concepts Concerning the Evolution of Remote Sensing into 2

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