Open AccessCompaction of porous rock by dissolution on discrete stylolites: A one‐dimensional model
Author(s) -
Angheluta Luiza,
Mathiesen Joachim,
Aharonov Einat
Publication year - 2012
Publication title -
journal of geophysical research: solid earth
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2012jb009245
Subject(s) - stylolite , compaction , porosity , cementation (geology) , pressure solution , dissolution , geology , geotechnical engineering , pore water pressure , mineralogy , diagenesis , materials science , composite material , cement , chemical engineering , engineering
Compaction of sedimentary porous rock by dissolution and precipitation is a complex deformation mechanism, that is often localized on stylolites and pressure solution seams. We consider a one‐dimensional model of compaction near a thin clay‐rich stylolite embedded in a porous rock. Under the assumption that the clay enhances solubility, the model predicts a reactive transport away from the clay layer followed by pore cementation. The evolution of the porosity, reactant transport, and compaction rate are studied as functions of model parameters and shown to reach a stationary state. We find good agreement between the porosity distribution predicted by the model and previously reported field measurements. The model provides quantitative estimates for compaction rates on stylolitic surfaces.