Modelling

Stratigraphic Modelling

 

Stratigraphic layers can often be modelled directly from the data. Creating a geological model from stratigraphic contacts is relatively straightforward.

Creating stratigraphic models can be straighforward, but in some cases it isn't. If your project is fairly complex, contact us to see the other tools that can be used for those cases.
Topography
The first step in most models is to define the topography. Generally, the topography is provided as a LIDAR scan, as a triangulated surface or other means. In some case however, there is no data present. In that case, the collar points can be used as done in this example.
Overburden
The next step is to model the overburden. This can be modeled directly from the lithology data by extracting its contact points and creating an implicit surface representation from them. In other circumstances, manual correction might be needed. With the two contacts created the overburden can be modeled between them.
Contacts
Following the overburden, the actual stratigraphic layers can be modeled. To this end the same approach is used by extracting the contact points for each layer followed by creating an implicit surface through them. This results in a list of contacts extending to the project boundary.
Geology model
With the contacts for each stratigraphic layer are defined, they be used to build the final model. Typically the geology model is build from youngest to oldest or vice versa. Either way is possible, but beware that the order will have an effect on the final results!
  • Lithology data
  • Extracted contact points
  • Contacts for top layers
  • Final stratigraphic model