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3D Analysis of Rock Textures: Quantifying Igneous Microstructures

¹ Dept. of Earth Sciences, Durham University
South Rd, Durham DH1 3LE, UK
E-mail: D.A.Jerram{at}dur.ac.uk
² Université du Québec à Chicoutimi, 555 blvd de l'Université
Chicoutimi, Québec G7H 2B1, Canada
E-mail: mhiggins{at}uqac.ca

An important goal of petrographers is to analyse rock textures (microstructures) and compositions in three dimensions, and thus fully quantify rock properties (porosity and permeability, geochemistry, crystal abundance, etc.). With the advent of serial sectioning techniques, X-ray tomography analysis and advanced image analysis, it is becoming increasingly easy to reconstruct rock textures in three dimensions. An exciting consequence is the potential to reconstruct crystal populations in three dimensions and relate their distribution to the chemical budget of a rock. Here we review the current state of the art in textural analysis techniques and consider the possibilities of virtual three-dimensional models of rock textures.

KEYWORDS: 3D textures, microstructure, X-ray tomography, petrography, serial sectioning

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