Abstract
Abstract
The slowdown of pressure solution creep has been thought to be caused by stress redistribution. This study presents a fresh view towards this creep behaviour. Basically, two rate-limiting mechanisms come into play amid pressure solution creep: (1) stress redistribution across expanding inter-granular contacts and (2) solute accumulation in the water film. Because non-hydrostatic dissolution occurs under open system conditions, solute accumulation in the water film is constrained by the ensuing solute transport process. Relying on the matter exchange across the contact surface boundary, the active processes in the voids, e.g., solute migration and deposition, affect pressure solution creep. Based upon the above, we sum up two requirements that have to be met for achieving chemical compaction equilibrium: (1) the Gibbs free energy of reaction, i.e., the driving force of non-hydrostatic dissolution process, gets depleted and (2) the concentration gradient between the water film and surrounding pore water vanishes.
Highlights
The slowdown of pressure solution creep is a combined result of stress migration across contacts and solute accumulation in the water film.
Matter exchange with the surroundings inhibits solute accumulation in the water film.
This article identifies two prerequisites that need to be fulfilled for achieving chemical compaction equilibrium.
Funder
Bundesministerium für Bildung und Forschung
Helmholtz-Zentrum für Umweltforschung GmbH - UFZ
Publisher
Springer Science and Business Media LLC
Subject
Economic Geology,General Energy,Geophysics,Geotechnical Engineering and Engineering Geology
Reference33 articles.
1. Bond Alexander E, Bruský I, Chittenden N, Feng X-T, Kolditz O, Lang P, Renchao L, McDermott C, Neretnieks I, Pan P-Z et al (2016) Development of approaches for modelling coupled thermal-hydraulic-mechanical-chemical processes in single granite fracture experiments. Environ Earth Sci 75(19):1313
2. Cheng C, Milsch H (2020) Evolution of fracture aperture in quartz sandstone under hydrothermal conditions: mechanical and chemical effects. Minerals 10(8):657
3. De Boer RB, Nagtegaal PJC, Duyvis EM (1977) Pressure solution experiments on quartz sand. Geochim Cosmochim Acta 41(2):257–264
4. Feng Z, Yang Y, Niu W, Zhao Y, Wan Z, Yao Y (2020) Permeability and meso-structure evolution of coking coal subjected to long-term exposure of triaxial stresses and high pressure nitrogen. Geomech Geophys Geo-Energy Geo-Resour 6(3):1–11
5. Gratier J-P, Dysthe DK, Renard F (2013) The role of pressure solution creep in the ductility of the Earth’s upper crust. Adv Geophys 54:47–179
Cited by
7 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献