An article in the “Art of Science” series, by Dan Cornford exploring and explaining the use of statistics, machine learning and more widely data science in the geosciences.Go to: Patterns in the mind – Part 1
News - Technical note
IGI prides itself on innovating in the domain of geochemistry. We often publish updates and short notes on areas of interest, as well as notifications of events or major developments within IGI.
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by Marianne Nuzzo and Mischa GehlenGo to: How the “Rayleigh fractionation effect” is used to model the source and maturity of hydrocarbon gases: principles and potential problems
Kerogen is the semi-solid polymeric material that is insoluble in both water and organic solvents, and which forms the majority of the organic matter present in a petroleum source rock.Go to: Biomarkers in kerogen by Paul Farrimond
by Marianne Nuzzo and Mischa GehlenGo to: Forensic use of diagnostic biomarker ratios in environmental oil spill geochemistry
Andrew Murray and Ken Peters recently presented an interesting paper on mixing of oils and gas condensates, and the use of Alternating Least Squares (ALS) and Hierarchical Cluster Analysis (HCA) for interpreting such mixtures.Go to: Unmixing mixtures - a mathematical perspective on using peak concentrations versus ratios
In this article, which extends the piece in our newsletter, we explore what Principal Components Analysis (PCA) is, where it is useful, address some key points to be aware of in usage, and describe how to undertake PCA in p:IGI+.Go to: Further reading on Principal Components Analysis in p:IGI+
By Marianne NuzzoGo to: Detection of micro-seepage of deep-sourced fluids by modelling geochemical and heat flow signals
By Paul FarrimondGo to: Geochemistry of oils in the Wessex Basin, UK
By Paul FarrimondGo to: Rearranged hopanes in petroleum geochemistry
By Tiago CunhaGo to: Combining petroleum systems modelling approaches to de-risk frontier rift basins: an application to the Namibe Basin, off southern Angola