Automated stratigraphic interpretation from drillhole lithological descriptions with uncertainty quantification: litho2strat 1.0

Ogarko, Vitaliy; Jessell, Mark

doi:10.5194/gmd-19-1007-2026

Articles | Volume 19, issue 2

https://doi.org/10.5194/gmd-19-1007-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

The Loop 3D stochastic geological modelling platform – development...

https://doi.org/10.5194/gmd-19-1007-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 2

Development and technical paper

|

30 Jan 2026

Development and technical paper |

| 30 Jan 2026

Automated stratigraphic interpretation from drillhole lithological descriptions with uncertainty quantification: litho2strat 1.0

Vitaliy Ogarko and Mark Jessell

Model code and software

litho2strat 1.0 source code V. Ogarko and M. Jessell https://doi.org/10.5281/zenodo.15064470

Short summary

Millions of historical drillholes contain rock descriptions but lack stratigraphic information needed for subsurface modeling. We developed an automated method converting rock descriptions into stratigraphic interpretations by testing plausible sequences using regional maps. The approach quantifies uncertainty and correlates multiple drillholes. Testing on fifty-two South Australian drillholes successfully predicted correct sequences, unlocking legacy data value for geological surveys.