A SYSTEM FOR MANAGEMENT OF 3D GEOLOGICAL MODELS AT THE BRITISH GEOLOGICAL SURVEY

The British Geological Survey builds 3D geological models at a wide range of scales for multiple purposes and using various modeling methodologies and software. Collectively, the models are one of the key assets of a Geological Survey Organisation – i.e. ‘A National Geological Model’. To support the creation, management and delivery of our National Geological Model, a system is being constructed to provide:

1. Easy access to a wide range of multidisciplinary input data - terrain models, boreholes, field observations, physical property and geophysical data,
2. Easy transfer of data between modeling softwares,
3. Versioned storage of approved models at all scales,
4. Delivery of completed models for onward use and geological objects for re-use.

Our new approach is based on data standardization for the key ‘geological objects’ present in the workflows - for example geological map linework, cross-sections, terrain models, boreholes and surfaces. At the core of this design is a database which will store the objects intact in the context of their original interpretation or modelling environment. By standardizing the definition of these data types, and hence building databases and software tools which conform to that standard, we ease data collection, retrieval, transfer and storage. Because the definitions remain geological (e.g. interpreted cross-section) rather than purely geometric (e.g. 3D line) the data has more integrity and is easier to transfer and store ‘in context’.

The system comprises:

1. A 3D database for the National Geological Model – the ‘Geological Object Store’ – which stores the geological objects and provides versioning and approval,
2. Data access tools for import of multi-disciplinary data into the 3D modelling software workflows to allow for holistic interpretation,
3. Converters to support transfer of data between the file formats used in field data capture and 3D modelling software used by the geologists.