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Corinth Publication: Rathossi, et al. Clay Minerals 47:2, 2012 | Collection: | | Corinth | | Name: | | Rathossi, et al. Clay Minerals 47:2, 2012 | | Title: | | Mineralogy and microfabrics of clay-bearing sediments of NE Peloponnese (Greece): indices for physical behaviour in civil engineering works | | Author: | | Rathossi, C. E.; Lampropoulou, P. G.; Skourlis, K. C. & Katagas, C. G. | | Series Title: | | Clay Minerals | | Volume: | | 47:2 | | Month: | | June | | Date: | | 2012 | | Abstract: | | The mineralogical composition, microfabrics and geochemistry of a set of eight samples derived from a narrow area of NE Peloponnese (Greece), where engineering works are presently in progress, were investigated in this study. No important mineralogical differences were observed between the samples other than a variation in the proportions of the participating phases. Analyses reveal that these sediments consist mainly of carbonates (calcite, dolomite), quartz and feldspars (albite, orthoclase). Carbonate minerals exhibit a micritic texture and a high degree of cementation bonding. Phyllosilicates and clay minerals are also common, with smectite and mixed-layer smectite-chlorite being the prevailing phases, followed by chlorite and white mica (muscovite, illite). According to the physical properties measured on bulk samples, the samples were found to exhibit a low to medium expansion, low to intermediate plasticity, normal activity and brittle behaviour. The porosity does not exceed 46% and the organic matter ranges between 3.80 and 5.00%. The high degree of cementation, the dispersed appearance of clays, the small pores 10 m) and the common occurrence of smectite in a mixed-layer with chlorite are all favourable characteristics, positively influencing the sediment's stability for engineering constructions. | | Page: | | 259-274 | | URL: | | http://claymin.geoscienceworld.org/content/47/2/259 |
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