Logging the chalk / Rory N. Mortimore.

Includes bibliographical references (pages 341-347) and index.

Print version record.

Preface and Acknowledgements; Introduction; 1 Describing, classifying and interpreting the Chalk for engineering purposes ; Equipment for logging, eningeering description and classification; Describing chalk sediments; Carbonate content and density measurements; Recognising and describing chalk beds; Recognising and describing phosphatic chalks; Recognising and describing marly chalks and marl seams; Recognising and describing flints and flint bands; Synsedimentary and immediately post-sedimentary structures; Using fossils as an aid to logging; Illustrations to Chapter 1.

2 A stratigraphic framework for the Chalk: Southern ProvinceRegional setting; Southern Province Chalk Group; Grey Chalk Subgroup ; White Chalk Subgroup; Illustrations to Chapter 2; 3 A stratigraphic framework for the Chalk: Transitional Province ; Regional setting; The Berkshire Downs and Chiltern Hills; Grey Chalk Subgroup; White Chalk Subgroup; Correlation framework from the Chiltern Hills to East Anglia ; Marker beds in the Chalk beneath London; East Anglia; Illustrations for Chapter 3; 4 Chalk formations and marker beds in the Northern Province of England, onshore and offshore.

Regional settingNorthern Province Chalk stratigraphy; Grey Chalk Subgroup; White Chalk Subgroup; Key coastal exposures and weathered profiles; North Sea Chalk formations: near-offshore Norfolk to Yorkshire; Weathering and reworking of the Chalk in the immediate offshore; Illustrations for Chapter 4; 5 Central Graben and Northern North Sea Chalks; Regional setting; Stratigraphy of the Chalk in the North Sea; Distributions of formations in the UK sector, Central and Northern North Sea; Lithostratigraphic units; Describing North Sea Chalks; North Sea lithogies and core log representation.

Illustrations from Chapter 56 Logging the Chalk: styles of weathering found in core and field sections; When should chalk be described as weathered?; Discoloured chalk; Smell; Mechanical breakdown, fracturing and CIRIA grade; Influence of geological setting on weathering of the Chalk; Chalk-Palaeogene contact surface; Chalk beneath the Quaternary; Shallow karst weathering in the Chalk; Deeper karst in the Chalk; Illustrations from Chapter 6; 7 The future; Introduction; Types of camera log: the optical televiewer and the acoustic televiewer; Geophysical borehole wireline logs.

Formation property logsDiscussion; Conclusions; Illustrations for Chapter 7; References; Further reading; Appendix A: Chalk weathering grades; Appendix B: Describing flint sizes; Flint size; Flint type; Index.

This book is based on the standard lithostratigraphy and method of engineering description of Chalk developed over many years.

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