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- Parry, W.T.
- Sedimentary geology 2011 v.233 no.1-4 pp. 53-68
- sand, etc ; aquifers; bacteria; bleaching; coatings; goethite; hematite; illite; iron; kaolinite; lepidocrocite; models; oxidation; oxygen; pH; plateaus; porosity; protons; quartz; sandstone; spatial distribution; Colorado; Show all 22 Subjects
- ... Iron oxide concretions are formed from post depositional, paleogroundwater chemical interaction with iron minerals in porous sedimentary rocks. The concretions record a history of iron mobilization and precipitation caused by changes in pH, oxidation conditions, and activity of bacteria. Transport limited growth rates may be used to estimate the duration of fluid flow events. The Jurassic Navajo S ...