HorizonCube: Interpreting Complex Settings Classical interpretation of complex geology is typically performed by mapping a limited set of horizons either manually, or with the h...
HorizonCube: Interpreting Complex Settings
Classical interpretation of complex geology is typically performed by mapping a limited set of horizons either manually, or with the help of auto-trackers. Even mapping just a handful of events is a laborious, time-consuming process. Such an approach is inadequate for unravelling the depositional history of a complex setting as observed in the Hawke's Bay area in New Zealand. This area was subjected to numerous tectonic activities as a result of the compression between the Australian and the Pacific plates which caused episodes of uplifting and subsidence (Lee et al., 2014).
In OpendTect’s HorizonCube we study the depositional history and relationship between stratigraphic events in Relative Geologic Time. A HorizonCube consists of a dense set of automated horizons.
In the example below, a data driven HorizonCube was created with more than 400 seismic horizons. These horizons were used to compute a HorizconCube Density attribute. This attribute calculates the number of horizons in a sliding window. It clearly shows where in the sedimentary sequence we encounter condensed sections, pinch outs, and unconformities.
*Lee, J. M.; Tschritter, C.; Begg, J. G. 2014. A 3D geological model of the greater Heretaunga/Ahuriri Groundwater Management Zone, Hawke’s Bay. GNS Science Consultancy Report 2014/89. 31 p.
Author: Hesham Refayee
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