Conference organizing committees. Preface. Table of contents. List of technical referees. I. Special lecture and keynotes. Clays in industry (H.H. Murray). The Tandilia System, Province of Buenos Aires, Argentina: its sedimentary successions (R. Andreis). Technological and compositional requirements of clay materials for ceramic tiles (M. Dondi). Activation of clays for environmental uses - can we improve on nature, and can it pay? (G.J. Churchman, C. Volzone). II. Clays in Geology. Na-bentonites and K-bentonites from Argentina: composition origin and age (R.R. Andreis, P.E. Zalba).
Clay mineralogy and construction problems in volcanic soils near Mount St. Helens: sediment retention structure, southwestern Washington, USA (M.L. Cummings). Neoformed mineral paragenesis in acid weathering systems: sedimentary vs. volcanic environments (Th. De Putter, A. Bernard et al.). Geochemical study of clay materials in Fornos de Algodres Region (central Portugal) in an archaeometric view (M.I. Dias, M.I. Prudêncio, M.A. Gouveia). Fibrous clay minerals as lithostratigraphic markers in a tertiary continental deposit (Malpica do Tejo, Portugal)(M.I. Dias, F. Rocha). Cr-bearing chlorites in low-grade metapelites of the Puncoviscana Formation (Neoproterozoic), northwestern Argentina (M. Do Campo, F. Nieto). Two types of hydrothermal clay deposits in the south-east area of Tandilia, Buenos Aires Province, Argentina (J. Dristas, M.C. Frisicale). Occurrence of bentonites in southern South America (M.L.L. Formoso, L.M. Calarge et al.). Clay mineralogy, illite crystallinite and polytypes in the Campana Mahuida Porphyry Cu deposit, Neuquén, Argentina (A. Impiccini, M. Franchini et al.). A neoformed kaolinitic mineral in the Upper Pleistocene of northeastern Argentina (M. Iriondo, D. Kröhling). Surface microtopography of pyrophillite from different modes of occurrence (M. Jige, R. Kitagawa et al.