Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1007/s40948-021-00247-4 |
Lizenz  |
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| Titel (primär) | What process causes the slowdown of pressure solution creep |
| Autor | Lu, R.; Cheng, C.; Nagel, T.; Milsch, H.; Yasuhara, H.; Kolditz, O.
; Shao, H.
|
| 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 | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24807 |
| 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 |
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