Sedimentary rocks in the field / Maurice E. Tucker.

Format:

Book

Author/Creator:

Tucker, Maurice E.

Series:

Geological field guide series

The geological field guide series

Language:

English

Subjects (All):

Sedimentary rocks.

Petrology--Fieldwork.

Petrology.

Physical Description:

ix, 234 pages : illustrations ; 18 cm.

Edition:

Third edition.

Place of Publication:

West Sussex, England ; Hoboken, NJ : J. Wiley, [2003]

Summary:

A large proportion of fieldwork involving the study of sedimentary rocks is unsupervised. This handy pocket-sized book has been written especially for use in the field. It describes how successful fieldwork can be accomplished, with particular emphasis on the precision and accuracy of recording detail. The basic field techniques required are clearly described, with tables of what to do, illustrations and photos. Sedimentary Rocks in the Field Third Edition discusses the various sedimentary rock-types, textures and structures as they can be recorded in the field. A chapter on fossils is included since these are important components of sedimentary rocks and can provide useful information. The concluding section deals briefly with facies identification and points the way towards facies interpretations and the identification of sequences and cycles. This book will be of use to 2nd/3rd year undergraduates in areas of sedimentology, stratigraphy, field mapping and training. It is an ideal supple-mentary text for professional geologists, physical geographers, engineering geologists and civil engineers.

Contents:

1.1 Tools of the Trade 1

1.3 Use of GPS in Sedimentary Studies 3

1.4 Safety in the Field and General Guidance for Fieldwork 4

2 Field Techniques 7

2.1 What to Look for 7

2.3 Field Notes 9

2.4 Graphic Logs 10

2.5 The Logging of Cores 15

2.6 Lithofacies Codes 16

2.7 Collecting Specimens 17

2.8 Presentation of Results 18

2.9 The Way-Up of Sedimentary Strata 19

2.10 Stratigraphic Practice 20

3 Sedimentary Rock Types 29

3.1 Principal Lithological Groups 29

3.2 Sandstones 32

3.3 Conglomerates and Breccias 36

3.4 Mudrocks 39

3.5 Limestones 40

3.6 Evaporites 51

3.7 Ironstones 53

3.8 Cherts 55

3.9 Sedimentary Phosphate Deposits (Phosphorites) 57

3.10 Organic-Rich Deposits 58

3.11 Volcaniclastic Deposits 59

4 Sedimentary Rock Texture 67

4.2 Sediment Grain Size and Sorting 67

4.3 Grain Morphology 69

4.4 Sediment Fabric 72

4.5 Textural Maturity 75

4.6 Texture of Conglomerates and Breccias 76

4.7 Induration and Degree of Weathering 77

4.8 Colour of Sedimentary Rocks 79

5 Sedimentary Structures and Geometry of Sedimentary Deposits 83

5.2 Erosional Structures 83

5.3 Depositional Structures 88

5.4 Depositional Structures of Limestones (Including Dolomites) 119

5.5 Post-Depositional Sedimentary Structures 127

5.6 Biogenic Sedimentary Structures 143

5.7 Geometry of Sedimentary Deposits and Lateral Facies Changes 158

6 Fossils in the Field 163

6.2 Fossil Distribution and Preservation 166

6.3 Fossil Associations and Diversity 170

6.4 Skeletal Diagenesis 174

7 Palaeocurrent Analysis 179

7.2 Palaeocurrent Measurements 179

7.3 Structures for Palaeocurrent Measurement 185

7.4 Presentation of Results and Calculation of Vector Means 187

7.5 Interpretation of the Palaeocurrent Pattern 188

8 What Next? Facies Analysis, Cycles and Sequences 191

8.2 Facies Analysis 191

8.3 Facies Models and Depositional Environments 193

8.4 Cycle Stratigraphy and Sequence Stratigraphy 194.

Notes:

Includes bibliographical references (pages 225-228) and index.

ISBN:

0470851236

OCLC:

51900578

Online:

Publisher description