Silent witnesses

How geochemistry tells about climate and environments

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Colourful EBSD

Electron backscatter diffraction is a method that can visualise the orientation of crystals in a mineral, yielding beautiful stained glass-like pictures of biominerals. When it is used on sections of earthworm granules this is the result:

Electron Backscatter Diffraction (EBSD) orientation contrast map of an earthworm granule highlighting its polycrystalline microstructure. Image by Martin Lee, School of Geographical and Earth Sciences, University of Glasgow.