Clay mineral precipitation and transformation during burial diagenesis

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Authors:Curtis, C. D.
Author Affiliations:Primary:
Univ. Sheffield, Dep. Geol., Sheffield, United Kingdom
Volume Title:Geochemistry of buried sediments
Volume Authors:Eglinton, G., editor; Curtis, C. D.; McKenzie, D. P.; Murchison, D. G.
Source:Philosophical Transactions of the Royal Society of London, Series A: Mathematical and Physical Sciences, 315(1531), p.91-105; Geochemistry of buried sediments, London, United Kingdom, June 27-28, 1984, edited by G. Eglinton, C. D. Curtis, D. P. McKenzie and D. G. Murchison. Publisher: Royal Society of London, London, United Kingdom. ISSN: 0080-4614
Publication Date:1985
Note:In English. Discussion provided by: Murchison, D. G., Berner, R. A., Shaw, H., Sarnthein, M., Durand, B., Eglinton, G., Mackenzie, A. S., Surdam, R. C.. 26 refs.; illus.
Summary:During burial diagenesis, detrital smectites evolve via 'illite-smectite' to illite. Trioctahedral 'smectite-illite' or 'vermiculite-chlorite' evolve to true chlorite. In other reactions, authigenic kaolinite, illite and chlorite precipitate from aqueous solutions and mineral replacements occur in others. Many reactions are influenced by organic matter and its diagenetic and thermal maturation products. CO2 and organic acids influence pore-water pH and hence solubility of clay minerals, especially trioctahedral phyllosilicates. Organic matter is also a reducing agent when Fe(III) oxides are destabilized to Fe2+ and an increase in alkalinity stabilizes chamosite. Clay mineral diagenesis varies systematically with burial depth and T. [R.K.H.]
Subjects:Authigenesis; Authigenic minerals; Burial diagenesis; Clay mineralogy; Clay minerals; Diagenesis; Experimental studies; Genesis; Geochemistry; Illite; Iron; Materials; Metals; Organic compounds; Petroleum; Precipitation; Processes; Sedimentary rocks; Sheet silicates; Silicates; Smectite; Transformations; Organic materials; Reactions
Abstract Numbers:86M/3308
Record ID:1986001952
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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