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K-Ar dating of illite in hydrocarbon reservoirs

Published online by Cambridge University Press:  09 July 2018

P. J. Hamilton
Affiliation:
Isotope Geology Unit, Scottish Universities Research and Reactor Centre, East Kilbride, Glasgow G75 0QU, Scotland
S. Kelley
Affiliation:
Isotope Geology Unit, Scottish Universities Research and Reactor Centre, East Kilbride, Glasgow G75 0QU, Scotland
A. E. Fallick
Affiliation:
Isotope Geology Unit, Scottish Universities Research and Reactor Centre, East Kilbride, Glasgow G75 0QU, Scotland

Abstract

Some of the many problems associated with the acquisition and interpretation of K-Ar isotope data for authigenic illites in porous sandstone lithologies are discussed. Difficulties arise from a lack of critical awareness of the assumptions made in deriving a K-Ar age of illite formation. Calculations are presented which imply that where sustained reservoir temperatures are high (> 150°C), erroneously low K-Ar ages could result from diffusive Ar loss. Very low levels of detrital contamination with other K-bearing minerals cause further difficulties. Even non-K-bearing contaminants may have a marked effect on apparent ages of illite ‘separates’. However, if considerable care is exercised during separation, the contamination problem is not intractable. The potential of the K-Ar technique to specify temporal development of the characteristics of reservoir rocks suggests that analytical refinements and basic experimental parameters are worth pursuit. Hypothetical examples of depth-age profiles are discussed in the context of their relevance to the timing and nature of hydrocarbon charging of reservoirs.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1989

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References

Ahrens, L.H. (1951) The feasibility of a calcium method for the determination of geological age. Geochim Cosmochim. Acta 1, 312–316.Google Scholar
Altaner, S.P., Weiss, C.A. & Kirkpatrick, R.J. (1988) Evidence from 29Si NMR for the structure of mixed- layer illite/smectite clay minerals. Nature 331, 699–702.Google Scholar
Andrews-Speed, C.P., Oxburgh, E.R. & Cooper, B.A. (1984) Temperature and depth dependent heat flow in Western North Sea. AAPG Bull. 68, 1764–1781.Google Scholar
Aronson, J.L. & Buktner (1983) K/Ar dating of illitic clays of Jurassic Nugget sandstone and timing of petroleum migration in Wyoming Overthrust Belt (abstract). AAPG Bull. 67, 414.Google Scholar
Aronson, J.L. & Douthitt, C.B. (1986) K-Ar systematics of an acid-treated illite-smectite: implications for evaluating age and crystal structure. Clays Clay Miner. 34, 473–482.Google Scholar
Bray, C.J., Spooner, E.T.C., Hall, C.M., York, D., Bills, T.M. & Krueger, H.W. (1987) Laser probe 40Ar/39Ar and conventional K/Ar dating of iUites associated with the McClean unconformity related deposits, north Saskatchewan, Canada. Can. J. Earth Sci. 24, 10–23.Google Scholar
Burley, S.D. (1986) The development and destruction of porosity within Upper Jurassic reservoir sandstones of the Piper and Tartan fields, Outer Moray Firth, North Sea. Clay Miner. 21, 649–694.CrossRefGoogle Scholar
Burley, S.D. & Flisch, M. (1989) K-Ar chronology and the origin of illite in the Piper and Tartan Fields, Outer Moray Firth, UK North Sea. Clay Miner. 24, 285–315.CrossRefGoogle Scholar
Burnett, D.S., Lippolt, H.J. & Wasserburg, G.J. (1966) The relative 40K abundance in terrestrial and meteoritic samples. J. Geophys. Res. 71, 1249–1269.Google Scholar
Clauer, N. (1980) Strontium and argon in naturally weathered biotites, muscovites and feldspars. Chem. Geol. 31, 325–334.CrossRefGoogle Scholar
Coleman, M.L. (1971) Potassium-calcium dates from pegmatitic micas. Earth Planet. Sci. Lett. 12, 399–405.Google Scholar
Crank, J. (1975) The Mathematics of Diffusion, 2nd ed. Oxford Univ. Press.Google Scholar
Dalrymple, G.B. & Lanphere, M.A. (1969) Potassium-Argon Dating. Principles, Techniques and Applications to Geochronology. W. H. Freeman and Co., New York. 258 pp.Google Scholar
Dodson, M. (1973) Closure temperature in cooling geochronological and petrological systems. Contrib. Mineral. Petrol. 40, 259–274.CrossRefGoogle Scholar
Dutta, P.K. & Suttner LJ. (1986) Alluvial sandstone composition and paleoclimate: II. Authigenic mineralogy. J. Sed. Pet. 56, 346–358.Google Scholar
Faure, G. (1987) Principles of Isotope Geology, 2nd ed. John Wiley and Sons, New York and London, 589 pp.Google Scholar
Foland K.A., , Linder, J.S., Laskowski, T.E. & Grant, N.K. (1984)40Ar/39Ar dating of glauconites: measured 39Ar recoil loss from well crystallized specimens. Isotope Geosci. 2, 241–264.Google Scholar
Frick, U. & Chang, S. (1977) Ancient carbon and noble gas fractionation. Proc. 8th Lunar Sci. Conf. 1, 263272.Google Scholar
Gerber, R. & Birss, R.R. (1983) High Gradient Magnetic Separation.Research Studies Press, John Wiley and Sons.Google Scholar
Gilletti, BJ. (1974) Studies in diffusion I. Argon in phlogopite mica. Pp. 107-115 in: Geochemical Transport and Kinetics(Hofmann, A., Gilletti, B. J., Yoder, H. and Yund, R., editors). Carnegie Institute, Washington, Publ. 634.Google Scholar
Guven, N., Hower, W.F. & Davies, D.K. (1980) Nature of authigenic illites in sandstone reservoirs. J. Sedim. Petrol. 50, 761–766.Google Scholar
Halter, G., Sheppard, S.M.F., Weber, F., Clauer, N. & Pagel, M. (1987) Radiation related retrograde hydrogen isotope and K-Ar exchange in clay minerals. Nature 330, 638–641.Google Scholar
Hamilton, P.J., Fallick, A.E., Macintyre, R.M. & Elliott, S. (1987) Isotopic tracing of the provenance and diagenesis of Lower Brent Group Sands, North Sea. Pp, 939949 in: Petroleum Geology of N.W. Europe (Brooks, J. and Glennie, K. W., editors). Graham and Trotman, London.Google Scholar
Harrison, T.M. (1983) Some observations on the interpretation of 40Ar/39Ar age spectra. Isotope Geosci. 1, 319–338.Google Scholar
Harrison, T.M., Duncan, I. & McDougall, I. (1985) Diffusion of 40Ar in biotite. Temperature, pressure and compositional effects. Geochim. Cosmochim. Acta 49, 2461–2468.Google Scholar
Hogg, A.J.C., Pearson, M.J., Fallick, A.E., Hamilton, P.J. & Macintyre, R.M. (1987) Clay mineral and isotope evidence for controls on reservoir properties of Brent Group sandstones, British North Sea. Terra Cognita 7, 342.Google Scholar
Holmes, A. (1932) The origin of igneous rocks. Geol. Mag. 69, 543–558.CrossRefGoogle Scholar
Hunziker, J.C. (1986) The evolution of illite to muscovite: an example of the behaviour of isotopes in low- grade metamorphic terrains. Chem. Geol. 57, 31–40.Google Scholar
Hunziker, J.C., Frey, M., Clauer, N., Dallmeyer, R.D., Friedrichsen, H., Flehmig, W., Hochstrasser, K., Roggwiler, P. & Schwander, H. (1986) The evolution of illite to muscovite: mineralogical and isotopic data from the Glarus Alps, Switzerland. Contrib. Mineral. Petrol. 92, 157–180.CrossRefGoogle Scholar
Jourdan, A., Thomas, M., Brevart, O., Robson, P., Sommer, F. & Sullivan, M. (1987) Diagenesis as the control of the Brent sandstone reservoir properties in the Greater Alwyn area (East Shetland Basin). Pp. 951961 in: Petroleum Geology of N.W. Europe(Brooks, J. and Glennie, K. W., editors). Graham and Trotman, London.Google Scholar
Kelley, S., Turner, G., Butterfield, A.W. & Shepherd, T.J. (1986) The source and significance of argon isotopes in fluid inclusions from areas of mineralization. Earth Planet. Sci. Lett. 79, 303–318. Kendall, B.R.F. (1960) Isotopic composition of potassium. Nature 186, 225–26.Google Scholar
Kulp, J.L. & Engels, J. (1963) Discordances in K-Ar and Rb-Sr isotopic ages. Pp. 219239 in: Radioactive Dating. IAEA, Vienna.Google Scholar
Lee, M. (1984) Diagenesis of the Permian Rotliegendes Sandstone, North Sea: K-Ar, 1S0/160 and petrographic evidence.PhD Thesis, Case Western Reserve University, Cleveland, Ohio. 362 pp.Google Scholar
Lee, M., Aronson, J.L. & Savin, S.M. (1985) K/Ar dating of Rotliegendes Sandstone, Netherlands. AAPG Bull. 68, 1381–1385.Google Scholar
Macchi, L. (1987) A review of sandstone illite cements and aspects of their significance to hydrocarbon exploration and development. Geoi. J. 22, 333–345.Google Scholar
Marshall, B.D. & DePaolo, D. J. (1982) Precise age determinations and petrogenetic studies using the K-Ca method. Geochim. Cosmochim. Acta. 46, 2537–2545.Google Scholar
McBride, E.F., Lands, L.S. & Mack, L.E. (1987) Diagenesis of Eolian and Pluvial feldspathic sandstones. Norphlet fonnation (Upper Jurassic), Rankin County, Missippi and Mobile County, Alabama. Am. Res. Pet. GeoL 71, 1019–1034.Google Scholar
McHardy, W.J., Wilson, M.J. & Tait, J.M. (1982) Electron microscope and X-ray diffraction studies of filamentous illitic clay from sandstones of the Magnus Field. Clay Miner. 17, 23–39.Google Scholar
Melenevskiy, V.N., I. M., Morozova & Yurgina, Ye. K. (1980) The migration of radiogenic argon and biotite dehydroxylation. Geochem. Int. 1978, 7–16.Google Scholar
Merrihue, C. & Turner, G. (1966) Potassium-argon dating by activation with fast neutrons. J. Geophys. Res. 71, 2852–2857.Google Scholar
Mitchell, J.G. & Taka, A.S. (1984) Potassium and argon loss patterns in weathered micas: implications for detrital mineral studies, with particular reference to the Triassic palaeogeography of the British Isles. Sediment. GeoL 39, 27–52.Google Scholar
Mussett, A.E. (1968) Diffusion measurements and the potassium-argon method of dating. Geophys. J. R. Astr. Soc. 18, 257–303.Google Scholar
Nadeau, P.H. (1985) The physical dimensions of fundamental clay particles. Clay Miner. 20, 499–514. Nadeau, P.H. & Bain, D.C. (1986) Composition of some smectites and diagenetic illitic clays and imphcations for their origin. Clays Clay Miner. 34, 455–464.Google Scholar
Nadeau, P.H., Tait, J.M., McHardy, W.J. & Wilson, M.J. (1984) Interstratified XRD characteristics of physical mixtures of elementary clay particles. Clay Miner. 19, 67–76.Google Scholar
Ozima, M. & Podosek, F.A. (1983) Noble Gas Geochemistry.Cambridge University Press. 367 pp.Google Scholar
Phillips, M. & Onslott, T.C. (1988) Argon isotopic zoning in mantle phlogopite. Geology 16, 542–546. Purdy, J.W. & Jager, E. (1976) K-Ar ages of rock forming minerals from the Central Alps. Mem. Inst. GeoL Min. Univ. Padeava, 30.Google Scholar
Rankama, K. (1954) Isotope Geology. Pergamon Press Ltd., 535 pp.Google Scholar
Rama, S.N.I., Hart, S.R. & Roedder, E. (1965) Excess radiogenic argon in fluid inclusions. J. Geophys. Res. 70, 509–511.Google Scholar
Rison, N. (1980) Isotopic fractionation of argon during stepwise release from shungite. Earth Planet. Sci. Lett. 47, 383–390.Google Scholar
Robbins, G.A. (1972) Radiogenic argon diffusion in muscovite under hydrothermal conditons.MS Thesis, Brown University, Providence.Google Scholar
Russell, W.A. & Papanastassiou, D.A. (1978) Isotope fractionation in ion exchange columns. Anal. Chem. 50, 1151–1154.CrossRefGoogle Scholar
Russell, W.A., Papanastassiou, D.A. & Tombrello, T.A. (1978) Ca isotope fractionation on the earth and other solar system materials. Geochim. Cosmochim. Acta. 42, 1075–1090.Google Scholar
Smith, A.G. (1964) K-Ar decay constraints and age tables. Q. J. GeoL Soc. Lond. 120, 129–141.Google Scholar
SroedoN, J. & Eberl, D.D. (1984) Illite. Pp. 495544 in: Micas. Reviews in Mineralogy 13 (Bailey, S. W., editor). Mineralogical Society of America.Google Scholar
Stalder, P.J. (1973) Influence of crystallographic habit and aggregate structure of authigenic clay minerals on sandstone permeability. Geologie Mijnb. 52, 217–220.Google Scholar
Steiger, R.H. & Jager, E. (1977) Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology. Earth Planet. Sci. Lett. 36, 359–362.CrossRefGoogle Scholar
Turner, G. & Cadogan, P.H. (1974) Possible effects of 39Ar recoil in 40Ar-39Ar dating. Geochim. Cosmochim. Acta Supplement 5 (2), 16011615.Google Scholar
Verbeck, A.A. & Schreiner, G.D.L. (1967) Variations in 39K/, llK ratio and movement of potassium in a granite-amphibolite contact region. Geochim. Cosmochim. Acta. 31, 2125–2133.Google Scholar
Wilson, M.R., Kyser, T.K., Mehnert, H.H. & Hoeve, J. (1987) Changes in the H-O-Ar isotope composition of clays during retrograde alteration. Geochim. Cosmochim. Acta. 51, 869–878 Google Scholar
York, D. & Farquhar, M. (1972) The Earth's Age and Geochronology. Pergamon Press, 178 pp.Google Scholar