DOI: 10.1002/2015GL063146
论文题名: Synchronization of dissolution and precipitation fronts during infiltration-driven replacement in porous rocks
作者: Kondratiuk P. ; Tredak H. ; Ladd A.J.C. ; Szymczak P.
刊名: Geophysical Research Letters
ISSN: 0094-8772
EISSN: 1944-8503
出版年: 2015
卷: 42, 期: 7 起始页码: 2244
结束页码: 2252
语种: 英语
英文关键词: dissolution
; flow in porous media
; replacement processes
Scopus关键词: Dissolution
; Ions
; Minerals
; Porous materials
; Statistical mechanics
; Chemical mechanism
; Coupled dissolution precipitations
; Crystallization pressure
; Flow in porous media
; Morphological features
; Precipitation fronts
; Reactive transport
; Volume-preserving
; Precipitation (chemical)
; calcite
; dissolution
; infiltration
; porous medium
; precipitation (chemistry)
; reactive transport
英文摘要: Coupled dissolution-precipitation reactions, where two minerals share a common ion, occur frequently in geological replacement; the reactions are driven by an inflow of precipitating secondary ions and an outflow of dissolved primary ions. Although crystallization pressure is frequently invoked to explain volume-preserving replacement, it cannot be operative if the chemical reactions lead to a loss of mineral volume; here the host rock that should confine the precipitating mineral is dissolving faster than the grains are growing. In this paper we propose two chemical mechanisms by which a rapid dissolution front and a slower precipitation front can be synchronized, and volume-for-volume replacement preserved. We analyze these mechanisms within the framework of reactive transport theory and show that morphological features observed in calcite replacement can be correlated with predictions of the models. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928704097&doi=10.1002%2f2015GL063146&partnerID=40&md5=c794976568d288c8ed98a912ff31401a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8388
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
Recommended Citation:
Kondratiuk P.,Tredak H.,Ladd A.J.C.,et al. Synchronization of dissolution and precipitation fronts during infiltration-driven replacement in porous rocks[J]. Geophysical Research Letters,2015-01-01,42(7).