DIAGENESIS OF THE MARLY-GYPSUM FORMATIONS, IGOUMENITSA AREA, N.W. GREECE

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Published: Jan 1, 2007
DOI: https://doi.org/10.12681/bgsg.16783
Keywords:
diagenesis evaporites celestite bassanite mixed layers karstiflcation
M. Tsipoura-Vlachou
National andKapodistrian University of Athens, Faculty of Science, Department of Geology and Geoenvironment, Section of Mineralogy and Petrology
Abstract

The Igoumenitsa area, in northwestern Greece, is composed of organic-rich clay evaporitic formations, of the Ionian zone. They have undergone diagenetic processes, which effect the mineralogical transformations. The purpose of this paper is the study of the mineralogical diagenesis and the possible implications to the geotechnical behavior of these organic-rich clay evaporitic sedimentary rocks. The diagenetic minerals reported in this study are: A: The authigenic swelling clay minerals, smectite and mixed layers of smectite. B. The two characteristic minerals phases of the sulfate diagenesis: I. Bassanite (semi hydrated gypsum-Ca04.l/2H20) and 2. Celestite (SrS04) that can be considered as an indicator of bacterial sulphate reduction, fluid flow and recycling ofevaporites. The two authigenic minerals have derived from the evaporites, mostly by the dehydration of gypsum and by the action of pore water that is charged with the ions derived from the dissolution of preexistent sulfates, halite and carbonates. C. The neoformation of the carbonate minerals aragonite and dolomite, due to probably bacterial sulfate reduction. When organic-clay rich sediments, are associated to evaporites, the diagenetic processes become more complex and interacted. The diagenetic alterations of the gypsum/anhydrite rocks are related to the geotechnical behavior of the formation and may lead to possible karstiflcation. That may cause problems in roads and tunnels construction on or through these evaporitic series

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  • Mineralogy-Petrology-Geochemistry-Economic Geology
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References
Azam, S., 1997. Effects of gypsum-anhydrite on the behavior of expansive clays, MS Thesis, King Fahd University of Petroleum and minerals, Dhahran.
Azam, S, 2003. Influence of mineralogy on swelling and consolidation of soils in eastern Saudi Arabia, Can. J. Geotech./Rev. Can. Geotech., 40(5), 964-975.
Badens, E., Ilewellyn, P., Fulconis, J.M., Jourdan, C, Veesler, S., Boislell, R., and Rouqueerd, F., 1998. Study of gypsum dehydration by controlled transformation rate thermal analysis, Journal of solid state Chemistry, 139, 37-44.
Ball, J.W., Nordsrom, D.K., and Jenne, E.A., 1980. Additional and revised thermochemical data and computer code for WATEQ2- a computerized chemical model for trace and major element speciation and mineral equilibria of natural waters, U.S. Geol. Surv. Water Res our. Invest., 78, 116, 1-109.
Bllat, H., Middleton, G., and Murray, R., 1980. Origin of sedimentary rocks, 2nd ed. Prentice-Hall, N.York, 538-567pp.
BP (British Petroleum Company), 1971. The geological results of petroleum exploration in Western Greece, Inst.Geol. Subs. Res., Athens, 10, 1-73.
Brookins, D.G., 1988. Eh-pH diagrams for geochemistry, Sringer-Verlag, Berlin 167pp.
Burkart, B., Gross, G.C., and Kern, J.P., 1999. The role of gypsum in production of sulfateinduced deformation of lime-stabilized soils, Environmental and Engineering Geocience, 5(2), 173-187
Carlson, E.H., 1983. The occurrence of Mississippi Valey-type mineralization in northwestern Ohio, Intern. Conf. Proceedings, University of Missouri, 424-435pp.
Carlson, E.H., 1987. Celestite replacement of evaporates in the Salina Group, Sedimentary Geology, 54, 93-112.
Chamley, H., 1989. Clay Sedimentology, Springer-Verlag, 623pp.
Cooper, A.H., and Sauders, J.M., 2002 Road and bridge construction across gypsum karst in England, Engineering Geology, 65, 217-223
Georiannou, V.M., 2005.Tunnelling through varying soil conditions in north- west Greece, Geotechnical Egineering home, 156, 2, 97-104.
Hanor, J., 2004. A model for the origin of large Carbonate and Evaporite hosted Celestine (SrS04) Deposits, Journal ofSedimentary Research, 74(2), 168-175.
Hardie, L.A., 1967. The gypsum-anhydrite equilibrium at one atmosphere pressure, Am. Mineralogist, 52, 171-200.
Holliday, D.W., 1970. The petrology of secondary gypsum rocks: a review, Journal of Sedimentary Petrology, 40(2), 734-744.
Foster, Α., Culshaw, M.G., and Bell, F.G., 1995. Regional distrubution of sulfate rocks and soils of Britain, Geol. Soc. Eng. Geol, Spec. Pubi, 10, 95-101.
Icart, J.C., Monchoux, P., and Tollon, F., 1965. Le strodium dans les evaporites de Tarascon (Arige), Bullentine de la Société Française de Mineralogie et de Crystallographie, 88(2):351-352.
Jacobson, A.D., and Wasserburg, G.J., 2005 Anhydrite and the Sr evolution of groundwater in a carbonate aquifer, Chemical Geology, 214, 3-4, 331-350.
Johnson, K.S., 2002. Evaporite-karst problems in the United States, Geol. Soc Am. Annual meeting, Denver.
Karakitsios, V., 1995. The influence of preexisting structure and halokinisis on organic matter preservation and thust system evolution in the Ionian basin, Northwestern Greece, AAPG Bullentin, 79, 960-980.
Karakitsios, V., 1998. The source rock horizons of Ionian basin (NW Greece), Marine and Petrolium Geology, 15, 593-617.
Karakitsios, V., and Pomoni-Papaioannou, F., 1998. Brecciation patern of the Triassic solution collapse breccias of the Ionian zone (western Greece) evidence for early diagenetic calcification. In C.Canaveras, M. Angeles Garsia del Cura and J. Soris (eds), 15 Indernational Sedimento logical congress Alicante Spain, 461-462pp.
Kushnir, J., 1982. The partinioning of sea water cations during the transformation of gypsum to anhydrite, Geochemica et Cosmochimical Acta, 46, 433-446.
Kushnir, J., 1986. The epigenetic celestite formation mechanism for rocks containing CaS04, Geochemistry International, 23, 1-9.
Machel, H.G., 2001. Bacterial and thermochemical sulfate reduction in diagenetic settings-old and new insights, Sedimentary Geology, 140, 143-175.
Machel, H.J., and Mountjoy, E.W., 1986. Chemistry and environments of dolomitization, Earth Sci. Rev., 23, 175-222.
Mckenzie, J.Α., 1985. Stable-isotope mapping in Messinian evaporative carbonates of central Sicily, Geology, 13, 851-854.
Mees, F., 1998. The alteration of glauberite in lacustrine deposits of the Taoudenni-Agorgot basin, nothern Mali, Sedimentary Geology, 117, 193-205.
Mees, F., and De Dapper, M., 2005. Vertical variations in bassanite distribution paterns in nearsurface sediments, southern Egypt, Sedimentary Geology, 181, 225-229.
Moiola, R.J., and Glover, E.D., 1965. Recent anhydrite from clayton Playa, Nevada, Am. Mineralogist, 50, 2063-2069.
Murray, R.C., 1964. Origin and diagenesis of gypsum and anhydrite, Journal of Sedimentary Petroogyl, 34(3), 512-523.
Newton, R.C., and Manning, CE., 2004. Solubility of anhydrite CaS04 in NaCl-H20 solutions at high pressures and temperatures. Applications to fluid-rock interaction, Journal of Petrology, 10, 1-16.
Olgaard, D.L., Ko, S., and Wong, T., 1995. Deformation and pore pressure in dehydrating gypsum under transiently drained conditions, Tectonophysics, 245, 237-248.
Peckmann, J., Paul, J., and Thiel, V., 1999. Bacterial mediated formation of diagenetic aragonite and native sulfur in Zechstein carbonates (upper Permian, Central Germany), Sedimentary Geology, 126,205-222.
Pierre, C, and Rouchy, J.M., 1988. Carbonate replacements after sulfate evaporites in the Middle Miocene of Egypt, Journal of Sedimentary Petrology, 58, 446-456
Ricconi, R.M., Brock, P.W.G., and Schreiber, B.C., 1996. Evidence for early aragonite in paleolacustrine sediments, J. Sedimentary Res., 66, 1003-1010.
Rigakis, N., and Karakitsios, V., 1998. The source rock horizons of the Ionian Basin (NW Greece), Marine and Petroleum Geology, 15, 593-617.
Scholle, P.A., Stemmerik, L., and Harpth, O., 1990. Origin of major karst associated celestite mineralization in karetryggen central east Greenland, Journal of Sedimentary Petrology, 60, 397-410.
Thode, H.G., Wanless, R.K., and Wallough, R., 1954. The origin of native surfur deposits from isotope fractination studies, Geochim. Cosmochimica Acta, 5, 286-298.
Tsipoura-Vlachou, M., 1991. Mineralogical, Penological, Geochemical study of sedimentary formations of a 2000m deep drillhole, at Katakolo area, Ilia, Phd, National and Kapodistrian University of Athens, Fac. of Science, Depart., of Geology, Sec. of Mineralogy and Petrology , Athens, 323pp.
Underhill, J., 1988. Triassic evaporites and Plio-Quaternary diapirism in western Greece, Journal of the Geological Society, London, 145, 269-282.
Warren, J., 1999. Evaporites. There evolution and economics, Blackwell Science, 438pp.
Wight, D.T., 1999. The role of sulfate reducing bacteria and cyanobacteria in dolomite formation in distal ephemeral lakes of the Coorong region, South Australia, Sedimentary Geology, 126, 147-157.
Wittke, W., 1990. Rock mechanics theory and applications with case histories, Springer, Berlin New York, 1076pp.
Wood, M.W. , and Shaw, H.F., 1976. The geochemistry of celestites from the Yate area near Bristol (U.K.), Chemical Geology, 17', 179-193.
Youseff, E.A.A., 1989. Geology and genesis of*sulfur deposits at Ras GEMSA AREA, Red Sea coast, Egypt. Geology, 17,797-801.
Zanbak, C, and Artur, R.C., 1986. Geochemical and engineering aspects of anhydrite/gypsum phase transition, Bull. Assoc. Eng. Geo I., 13(4), 419-433.
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