Extrapolating rock physicochemical properties from discrete sample data using computer vision

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ID: 315993
2026
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Abstract
Abstract Quantifying the lithological, physical and chemical properties of geological samples requires experts to generate records of visual material properties, followed by a targeted sampling to build a comprehensive geological understanding of the material. This understanding, therefore, is grounded in a significant amount of time on the part of the annotator to reliably extrapolate physicochemical information gained from relatively few discrete samples. It is not feasible for an expert to visually describe the entire surface of a sample; leading to only a coarse level of information where large amounts of material are being scrutinised. To overcome these limitations, we leverage the descriptive power of deep learning to generate objective high spatial resolution classifications of a ∼100 m long drill core of in situ carbonate cemented ocean crust talus breccia. Our AI-generated lithological classifications are used to semi-autonomously extrapolate bulk density and carbon concentration of discrete samples to the entire surface of the core at a 0.25 cm2 resolution. Synthetic bulk density generated shows improvement to traditional GRA measurements, and our estimate of carbon content confirms the importance of oceanic talus breccia in global biogeochemical cycles.
Reference Key
openalex_W7163695319 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Lewis J C Grant, Jennifer Lington, Elliot J. Carter, Damon A H Teagle, Thomas M. Belgrano, Rosalind M. Coggon
Journal PNAS nexus
Year 2026
DOI
10.1093/pnasnexus/pgag204
URL
https://doi.org/10.1093/pnasnexus/pgag204
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