Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1007/s40948-021-00247-4
Lizenz creative commons licence
Titel (primär) What process causes the slowdown of pressure solution creep
Autor Lu, R.; Cheng, C.; Nagel, T.; Milsch, H.; Yasuhara, H.; Kolditz, O. ORCID logo ; Shao, H. ORCID logo
Quelle Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Erscheinungsjahr 2021
Department ENVINF
Band/Volume 7
Heft 3
Seite von art. 57
Sprache englisch
Topic T8 Georesources
Keywords Pressure solution creep; Chemical compaction; Water-rock interaction; Non-hydrostatic dissolution
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.
dauerhafte UFZ-Verlinkung
Lu, R., Cheng, C., Nagel, T., Milsch, H., Yasuhara, H., Kolditz, O., Shao, H. (2021):
What process causes the slowdown of pressure solution creep
Geomech. Geophys. Geo-Energy Geo-Resour. 7 (3), art. 57 10.1007/s40948-021-00247-4