Mohr-Coulomb failure criteria
Brittle deformation and Mohr-Coulomb failure Deformation of Earth materials takes place predominantly within two rheological domains: brittle and ductile. Deformation […]
Mohr circles and stress transformation
Calculating normal stress and shear stress using Mohr circles Deformation of rock, sediment, and soil is usually manifested as a
Strike-slip analogue models
Sandbox analogue models of strike-slip basins and pop-up structures How things have changed. It wasn’t that long ago that numerical
Analogue structure models: Scaling the materials
This post deals with the materials, their rheological behaviours, and scaling as they apply to analogue structure models. Rock deformation
Geological models, How to do things, Interpreting ancient environments
Model dimensions and dimensional analysis
The correct scaling of geometric, dynamic, and kinematic system variables is a critical part of any useful analogue model. Most
Geological models: An introduction
The posts in this series focus on Earth science models, particularly the soft-rock kind. I have an abiding memory of
Analogue models
Analogue models are physical objects; we can touch them and observe represented systems directly. As such, they allow us to
Beds and bedding planes
The primacy of beds, bedding, and bedding planes Beds are the fundamental units of stratigraphy and sedimentology. They are the
Miller indices in crystallography
Miller, and Miller-Bravais indices are the standard where every face on a crystal is given a unique description. Crystals are
Salt marsh lithofacies
This is the fourth post in a series on vegetated coastal lithofacies – see also: Seagrass meadows and ecosystems Seagrass