GA820 Introduction to supergene processes of silicate rocks

Faculty of Science
Spring 2000
Extent and Intensity
2/1. 3 credit(s). Type of Completion: zk (examination).
Teacher(s)
doc. Ing. Jiří Faimon, Dr. (lecturer)
Guaranteed by
doc. Ing. Jiří Faimon, Dr.
Department of Geological Sciences – Earth Sciences Section – Faculty of Science
Contact Person: doc. Ing. Jiří Faimon, Dr.
Prerequisites (in Czech)
G5080 Geochemistry I
Course Enrolment Limitations
The course is also offered to the students of the fields other than those the course is directly associated with.
fields of study / plans the course is directly associated with
Syllabus
  • Geochemical cycles: migration of elements, differentiation of earth crust composition. Thermodynamical stability of rocks: igneous and metamorphic rocks, entropy, Gibb`s function, influence of p,T, and composition. Kinetic factors: ostwald`s step rule, interfacial surface energy, energy (entropy) barrier, rate of composition change. Interaction at phase boundary rock-water: diffusion and reaction model, TST-theory and theory of surface complex, irreversible and reversible processes, steady state, equilibrium. Interaction of dissolved species in solution: typical reactions, polymerization, condensation. Formation and precipitation of secondary mineral phases: supersaturation, diagrams of gibbsite and kaolinite solubility, formation of gibbsite and clay minerals. Thermodynamic models: systems of Na-Al-Si-H2O and K-Al-Si-H2O, reaction path, systems of Al-Si-pH, reaction paths. Kinetics: rate equations, rate constants, mass reservoirs, fluxes, modeling, computation. Landscape applications: formation of sediments, transport, mechanisms. Laterites, bauxites. Transport of dissolved weathering products in pore media.
Literature
  • Chemical weathering rates of silicate minerals. White A.F. & Brantley S.L., Eds. (1995) Reviews in Mineralogy, Vol. 31, Min. Soc. Am., Washington D.C.
  • Faimon J. (1995) Vznik koloidů při zvětrávání silikátů. Masaryk university, PhD thesis
  • Helgeson H.C., Murphy W.M., Aagaard P. (1984) Thermodynamic and kinetic constraints on reaction rates among minerals and aqueous solutions. II. Rate constants, effective surface area, and the hydrolysis of feldspar. Geochim. Cosmochim. Acta, 48, 2405-243
  • Aagaard P., Helgeson H.C. (1982) Thermodynamic and kinetic constraints on reaction rates among minerals and aqueous solutions. I. Theoretical considerations. Amer. J. Sci., 282, 237-285
  • ČURLÍK, Ján. Geochémia geologických procesov : hypergénne procesy. 1. vyd. Bratislava: Univerzita Komenského, 1988, 230 s. info
  • Geochemie. Edited by Vladimír Bouška. Praha: Academia, 1980, 555 s. URL info
Language of instruction
Czech
Further comments (probably available only in Czech)
The course is taught once in two years.
The course is taught: every week.
General note: !!!Upozornění!!! Bude probíhat až v letním semestru 2001 !!!Upozornění!!!.
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