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ChalkRock

Company Type
Geoengineering Consulting
Z3535FS
Yes
Company Snapshot
Company
ChalkRock
Headquarters
Lewes, United Kingdom
Company Type
Private
Company Size
0-1 employees
Regions
Europe
Industries
AcademiaCoastal EngineeringDredging & Marine ConstructionOffshore Wind Energy
About Us
ChalkRock is a multidisciplinary research and development consultancy which specialises in the geology, engineering geology and hydrogeology of the Chalk. The company has evolved from more than 30 years of research and professional practice on the Chalk and related rocks by the Managing Director, Professor Rory Mortimore.

Activities include tunnels under London (e.g. Crossrail with GCG andThames Tunnels for Thames Water), offshore wind farms in the North Sea, the Chalk aquifer for water supply (Environment Agency and Southern Water) and Chalk reservoirs in the North Sea with Shell (Aberdeen).

ChalkRock regularly run field and core logging courses both for professionals and amateurs and have produced the definitive Chalk handbook - Logging the Chalk (Rory N Mortimore).
 
Services & Activities
Expertise
Geoscience ● Survey & Site Investigation ● Training
Geotechnical Services
Geoengineering Consulting
Projects
Location:
Baltic Sea
Project Capacity:
350 MW
Location:
English Channel
Project Capacity:
210 MW
Publications
Chalk has proved to be one of the more difficult rocks to core-log as it breaks up readily during the drilling process leading to core-loss and destructuring, particularly where flints, nodular chalks and/or fractures are present. One of the greatest difficulties is the identification of chalk engineering grade which relies heavily on fracture aperture. ... MoreObtaining the correct grade to define the depth of weathering and the depth at which fractures become closed is essential whether for tunnels in London or for wind turbine piled foundations in the offshore chalks. Very few geologists and engineers have had the opportunity to study field sections in the Chalk so there is little visual appreciation of the grades or the variation to expect or even what flint bands look like. To partly overcome this difficulty, both field and core sections are illustrated in this book.

Equally important to recognising Chalk grade is the building of conceptual ground models for construction projects. This can only be achieved if the various Chalk formations, beds and marker beds can be identified from cores and then boreholes correlated using the marker beds. The Chalk stratigraphy is accordingly covered with key formations and marker beds illustrated, and the best field sections for viewing them identified.

This book is based on the standard lithostratigraphy and method of engineering description of Chalk developed over many years. Also important are over 3000 onshore and offshore chalk-cored boreholes undertaken by the author over more than 30 years. In addition, typical lithologies and weathering profiles representing the Chalk formations likely to be encountered in the various onshore and offshore construction projects are illustrated using field exposures, rotary core samples and geophysical borehole wire-line logs.

There will be geological settings where information on the Chalk is poor and unexpected lithologies and stratigraphies may be found. This book will enable geologists to work from first principles to construct a lithostratigraphy and define weathering boundaries.
Events
The British Geotechnical Association (BGA) with support from the Engineering Group of the Geological Society (EGGS) will be hosting a major two-day international conference on Engineering in Chalk on 17th and 18th September 2018 at Imperial College in London.... More

The last major conference on Chalk was held almost 30 years ago in 1989 in Brighton. Since that time, considerable work has been undertaken internationally through research and in many major projects in Chalk, advancing our understanding of its origin, nature and engineering behavior. The 2018 conference therefore seeks to bring together the knowledge and experience gained in the last three decades by presenting research and case histories to provide a definitive up to date perspective on a wide range of Technical Themes relating to engineering in Chalk.

It is planned that the conference will include a technical exhibition, a conference and technical tours.
Connections
G-tec provides specialised geotechnical engineering services, as well as marine geophysical surveys and marine environmental surveys. In particular, our services are targeted to customers active in dredging, offshore renewable energy, ports and coastal development, infrastructure and civil engineering, pipelines and cables, and mining and quarrying.
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Phone
+44 1273 471491
Head Office
32 Prince Edwards Road, Lewes, East Sussex BN7 1BE, United Kingdom