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An approach to the genesis of palygorskite in a Neogene-Quaternary continental basin using principal factor analysis

Published online by Cambridge University Press:  09 July 2018

C. Sánchez
Affiliation:
Laboratorio Mineralogía Aplicada, Facultad de Química, Unversidad de Castilla-La Mancha, Ciudad RealSpain
E. Galán
Affiliation:
Departamento de Cristalografía, Mineralogía y Química Agrícola, Facultad de Química, Universidad de Sevilla, Sevilla 41071, Spain

Abstract

The Carrión lacustrine basin (≈10 km2), central Spain, is filled with Neogene-Quaternary sediments (20–25 m thick) rich in palygorskite. Two clay units of ∼15 m thick are of particular interest in the basin. The lower one contains over 75% phyllosilicates (palygorskite up to 90%, smectites and illite) in marginal areas (facies A), and it is laterally bound by a distal facies (B) also rich in clay minerals (smectites and illite, and some palygorskite) and gypsum, and includes dolomitic marl intercalations. The composition at the top is primarily marly, with some gypsum (C). The upper clay unit, mainly clay-size material, (D) is rich in smectites, palygorskite and sepiolite, and contains carbonate intercalations near the top. A statistical treatment of the mineralogical and chemical composition data from 120 samples, using principal factor analysis, suggests that: (a) illite and smectite are detrital in origin; (b) palygorskite was formed by transformation of illite and smectite involving reaction with Mg; and (c) sepiolite was a neoformation product favoured by evaporation of silica- and Mg-bearing waters.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1995

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References

Barahona, E. (1974) Arcillas de ladrillería de la provincia de Granada. Evaluaciín de algunos ensayos de materias primas. PhD thesis, Secretar-iado Publicaciones, Univ. Granada.Google Scholar
Diez, J.A., Anorbe, M., Suarez, M., Navarrete, J. & Martin Pozas, J.M. (1989) Presencia y génesis de los minerales fibrosos de la arcilla en las proximidades de Villamuriel de Cerrato, prov. de Palencia. Studia Geol. Salm. 26, 725.Google Scholar
Galan, E. (1979) The fibrous clay minerals in Spain. Proc. 8th Conf. Clay Mineralogy, Teplice, 239249.Google Scholar
Galan, E. & Castillo, A. (1984) Sepiolite-palygorskite in Spanish Tertiary basins: Genetical patterns in continental environments. Pp. 87—124 in: Palygors-kite–Sepiolite. Occurrences, Genesis and Uses (Singer, A. & Galáin, E., editors). Developments in Sedimentology 37, Elsevier, Amsterdam.Google Scholar
Galan, E & Ferrero, A. (1982) Palygorskite-sepiolite clays of Lebrija, Southern Spain. Clays Clay Miner. 30, 191199.CrossRefGoogle Scholar
Golden, D.C. & Dixon, J.B. (1990) Low-temperature alteration of palygorskite to smectite. Clays Clay Miner. 38, 401408.Google Scholar
Jones, B.F. (1983) Occurrence of clay minerals in surficial deposits of southwestern Nevada. Sci. Geol. Mere. 72, 8192.Google Scholar
Jones, B.F. & Galan, E. (1988) Sepiolite and palygorskite. Pp. 631674 in: Hydrous Phyllosilicates (Bailey, S.W., editor). Reviews in Mineralogy, Mineralogi-cal Society of America 19.CrossRefGoogle Scholar
Martin Pozas, J.M. & Martin Vivaldi, J.M. (1981) Occurrence of fibrous clay in Spanish sedimentary basins. 7th Int. Clay Conf. Bologna-Pavia, Abstracts Book, 196–7.Google Scholar
Millot, G. (1964) Geologic des Argiles. Masson et cie. Paris, 498 pp.Google Scholar
Paquet, H. (1983) Stability, instability, and significance of attapulgite in the calcretes of Mediterranean and tropical areas with marked dry season. Sci. Geol, Mem. 72, 131140.Google Scholar
Pozo, M. & Martin De Vidales, J.L. (1989) Condiciones de formación de palygorskita-sepiolita en litofacies dolomítica de la cubeta de Piedrabuena, Campo de Calatrava. Ciudad Real. Estudios Geol. 45, 177193.Google Scholar
Pozo, M., Martin De Vidales, J.L., Medina, J.A. & Leguey, S. (1986) Evolución de los minerales de la arcilla de tipo esmectita-palygorskita en materiales carbonáiticos del Campo de Calatrava (Ciudad Real). Bol. Soc. Esp. Min. 9, 3142.Google Scholar
Reyment, R. & Jóreskog, K.G. (1993) Applied factor analysis in the Natural Sciences. Cambridge University Press, 371 pp.Google Scholar
Sanchez, C. (1992) Estudio Mineralógico y Genético de las ArciUas Fibrosas de la Cuenca de Carrión de Calatrava (Ciudad Real). PhD thesis, University of Granada, 228 pp.Google Scholar
Schultz, L.G. (1964) Quantitative interpretation of mineralogical composition from X-ray and chemical data for the Pierre-Shale. U.S. Geol. Surv. Prof Papers, 391-C, 31 pp.Google Scholar
Sharaf, M.A., Illman, D.L. & Kowalski, B.R. (1987) Chemometric. Pp. 179—275 in: Exploratory Data Analysis. Wiley, New York.Google Scholar
Singer, A. (1984) Pedogenic palygorskite in the arid environment. Pp. 169—175 in: Palygorskite-Sepio-lite. Occurrences, Genesis and Uses (Singer, A. & E.|Galáin, editors) Developments in Sedimentology 37, Elsevier, Amsterdam.Google Scholar
Suarez, M., Armenteros, I., Martin Pozas, J.M. & Navarrete, J. (1989) E1 yacimiento de Palygorskita de Bercinuel (Segovia): Génesis y propiedades tecnológicas. Studia Geol. Salm. 26, 2746.Google Scholar
Suarez, M., Robert, M., Elsass, F. & Martin Pozas, J.M. (1994) Evidence of a precursor in the neoformation of palygorskite. New data by analytical electron microscopy. Clay Miner. 29, 255264.Google Scholar
Thurstone, L.L. (1947) Multiple Factor Analysis. The University of Chicago Press, Chicago.Google Scholar
Trauth, N. (1977) Argiles évaporitiques dans la sédimentation carbonatée continentale et épiconti-nentale tertiarie. Sci. Geol. 49, 195 pp.Google Scholar
Weaver, J.A. & Beck, K.C. (1977) Miocene of the SE United States: A model for chemical sedimentation in a perimarine environment. Sed. Geol. 17, 1—234.CrossRefGoogle Scholar
Yaalon, D.H. & Wieder, M. (1976) Pedogenic palygorskite in some arid brown (calciorthid) soils of Israel. Clay Miner. 11, 7580.CrossRefGoogle Scholar