Figure 16 - uploaded by Nick Ryland Barton
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45 Reconstructed shear-and-dilation events for model tension fractures with the illustrated roughness profiles, cut out as plastic 'replicas'. Note the 'opposite' rotations of the (potentially) fluid-bearing lenses, which are down-dipping to the right, and the up-slope to the right rock-to-rock contact areas which are of 'double' thickness therefore signifying the production of crushed particles. The lenses will therefore have debris/gouge at their extremities. Barton, 1973a.
Source publication
This final chapter is designed to act as a cross-discipline reference point between rock mechanics and engineering geological behaviour in the ‘static’ world of slow-andmacro deformation processes, and the geophysicists ‘dynamic’ world of fast-and-micro deformation and attenuation processes. That there are important links between the two in terms o...
Citations
... Reservoir temperatures around 140°C are used in our modeling, based on temperature histories recorded from the fractures (Lander and Laubach, 2015). Barton (2021) introduced the correlation between temperature and normal stiffness using the heated block test and asserted that the measured stiffness at an ambient condition could be larger than the actual stiffness under higher temperature in depth due to cooling effect on the rock. Based on that correlation we can estimate the possible maximum stiffness (Kn max = 8 GPa/m) at 140°C. ...
