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Mixed-layer illite/smectite diagenesis in Upper Jurassic claystones from the North Sea and onshore Denmark

Published online by Cambridge University Press:  09 July 2018

P. L. Hansen  and
H. Lindgreen
P. L. Hansen
Affiliation:
Laboratory of Applied Physics, Technical University of Denmark, DK 2800 Lyngby
H. Lindgreen
Affiliation:
Laboratory of Applied Physics, Technical University of Denmark, DK 2800 Lyngby
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Abstract

Claystones of Kimmeridgian-Volgian(-Ryazanian) age are the main source rocks for oil in the Central Trough, North Sea, but they are too immature for oil generation in the Norwegian-Danish Basin. This paper describes the diagenesis of mixed-layer illite/smectite (I/S) in these source rocks as investigated by X-ray diffraction and high-resolution electron microscopy, interpretation for both methods being supported by computer simulations. Randomly-ordered I/S with ∼70% illite layers, together with discrete illite, kaolinite, and traces of chlorite and vermiculite, are detrital. The clay mineralogical data suggest the existence of an island at Gassum during part of the Upper Jurassic. Mixed-layer illite/smectite originating from volcanic ash is found in two wells in the Central Trough. The volcanism may be related to a period of stretching in the North Sea graben system during Jurassic-Lower Cretaceous time. Diagenesis has not altered the I/S in the Norwegian-Danish Basin. In the Central Trough, however, the amount of illite layers in I/S increases from ∼70% to ∼90% and the I/S becomes ordered. The volcanic clays have been changed to randomly ordered I/S with ∼50% illite layers. These changes occurred in the Central Trough simultaneously with oil generation.

Type
Research Article
Information
Clay Minerals , Volume 24 , Issue 2 , June 1989 , pp. 197 - 213
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1989

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References

Ahn, J.H. & Peacor, D.R. (1986a) Transmission and analytical electron microscopy of the smectite-to-illite transition. Clays Clay Miner. 34, 165–179.Google Scholar
Ahn, J.H. & Peacxdr, D.R. (1986b) Transmission electron microscopy data for rectorite: Implication for the origin and structure of 'fundamental particles'. Clays Clay Miner. 34, 180–186.Google Scholar
Anderson, J.U. (1963) An improved pretreatment for mineralogical analysis of samples containing organic matter. Clays Clay Miner. 10, 380–388.Google Scholar
Biørlykke, K., Dypvik, H. & Finstad, K.G. (1975) The Kimmeridgean shale, its composition and radioactivity. Pp. 1–20 in: Jurassic Northern North Sea Symposium 1975 (Finstad, K. G.& Selley, R. C., editors). Norwegian Petroleum Society, Stavanger.Google Scholar
Buzagh, A. & Szepesi, K. (1975) A colloid-chemical method for the determination of the montmorillonite content in bentonites. Acta Chim. Hung. 5, 287–298.Google Scholar
Cowley, J.M. & Moodie, A.F. (1957) The scattering of electrons by atoms and crystals. I. A new theoretical approach. Acta Cryst. 10, 609–619.Google Scholar
Cradwick, P.D. & Wilson, M.J. (1978) Calculated X-ray diffraction curves for the interpretation of a three- component interstratified system. Clay Miner. 13, 53–65.Google Scholar
Dixon, J.E., Fitton, J.G. & Frost, R.T.C. (1981) The tectonic significance of Post-Carboniferous igneous activity in the North Sea Basin. Pp. 121–137 in: Petroleum Geology of the Continental Shelf of North West Europe (Illing, L. V. & Hobson, G. D., editors). Institute of Petroleum, London.Google Scholar
Dypvik, H. (1983) Clay mineral transformations in Tertiary and Mesozoic sediments from North Sea. Am. Assoc. Petroleum Geol. Bull. 67, 160–165.Google Scholar
Eberl, D.D. (1984) Clay mineral transformation in rocks and soils. Phil. Trans. R. Soc. Lond. A311, 241–257.Google Scholar
Gibbs, R.J. (1967) Quantitative X-ray diffraction analysis using clay mineral standards extracted from the samples to be analysed. Clay Miner. 7, 79–90.CrossRefGoogle Scholar
Hower, J., Eslinger, E.V., Hower, M.E. & Perry, E.A. (1976) Mechanism of burial metamorphism of argillaceous sediments: I. Mineralogical and chemical evidence. Geol. Soc. Am. Bull. 87, 725–737.2.0.CO;2>CrossRefGoogle Scholar
Howitt, F., Aston, E.R. & Jacque, M. (1975) The occurrence oWurassic volcanics in the North Sea. Pp. 379–387 in: Petroleum and the Continental Shelf of North-West Europe 1 (Woodland, A. W., editor). Applied Science Publishers, London.Google Scholar
Hughes, R.E., DeMaris, P.J., White, W.A. & Cowin, D.K. (1987) Origin of clay minerals in Pennsylvanian strata of the Illinois Basin. Pp. 97–104 in: Proc. Int. Clay Conf., Denver, 1985 (Schultz, L. G., van Olphen, H. & Mumpton, F. A., editors). Clay Minerals Society, Indiana.Google Scholar
Hurst, A. (1982) The clay mineralogy of Jurassic shales from Brora, NE Scotland. Pp. 677–684 in: Proc. Int. Clay Conf. Bologna and Pavia, Italy 1981 (van Olphen, H. & Veniale, F., editors). Elsevier, Amsterdam.Google Scholar
Iijima, S. & Buseck, P.R. (1978) Experimental study of disordered mica structures by high-resolution electron microscopy. Acta Cryst A34, 709–719.Google Scholar
Jeans, C.V., Mbrriman, R.J., Mitchell, J.G. & Bland, D.J. (1982) Volcanic clays in the Cretaceous of Southern England and Northern Ireland. Clay Miner. 17, 105–156.Google Scholar
Jensen, P.K. (1982) Formation temperatures in the Danish Central Graben. Geol. Survey Denmark Yearbook 1982, 91–106.Google Scholar
Jensen, T.F., Holm, L., Frandsen, N. & Michelsen, O. (1986) Jurassic-Lower Cretaceous lithostratigraphic nomenclature for the Danish Central Trough. Geol. Survey Denmark Ser. A, 12, 65 pp.Google Scholar
Knox, R.W.O.B. & Fletcher, B.N. (1978) Bentonites in the lower D beds (Ryazanian) of the Speeton Clay of Yorkshire. Proc. Yorkshire Geol. Soc. 42, 21–27.Google Scholar
Larsen, G. (1966) Rhaetic-Jurassic-Lower Cretaceous sediments in the Danish Embayment. (A heavy-mineral study.) DSc thesis. Geol. Survey Denmark. II. Series. No. 91, 127 pp.Google Scholar
Madsen, L. (1974) Approximate geothermal gradients in Denmark and the Danish North Sea sector. Geol Survey Denmark Yearbook 1974, 5–16.Google Scholar
Michelsen, O. (1978) Stratigraphy and distribution of Jurassic deposits of the Norwegian-Danish Basin. Geol. Survey Denmark Ser. B. 2, 35 pp.Google Scholar
Nadeau, P.H. & Reynolds, R.C. (1981) Burial and contact metamorphism in the Mancos Shale. Clays Clay Miner. 29, 249-259.Google Scholar
Nadeau, P.H., Wilson, M.J. , McHardy, W. J. & Tait, J.M. (1984) Interparticle diffraction: a new concept for interstratified clays. Clay Miner. 19, 757–769.Google Scholar
O'Keefe, M. A. (1973) w-beam lattice images. IV Computed two-dimensional images. Acta Cryst. A29, 389–401.CrossRefGoogle Scholar
Pearson, M.J., Watkins, D. & Small, J.S. (1982) Clay diagenesis and organic maturation in Northern North Sea sediments. Pp. 665–675 in: Proc. Int. Clay Conf., Pavia and Bologna 'Italy' 1981 (Olphen, H. van & Veniale, F., editors). Elsevier, Amsterdam.Google Scholar
Perry, E.A. & Hower, j. (1970) Burial diagenesis in Gulf Coast pelitic sediments. Clays Clay Miner. 18, 165–177.Google Scholar
Roth, C.B., Jackson, M.L. & Syers, J.K. (1969) Deferration effect on structural ferrous-ferric iron ratio and CEC of vermiculites and soils. Clays Clay Miner. 17, 253–264.Google Scholar
Schmidt, B.J. (1985) A coat petrographic source rock evaluation of the Rhaetic-Jurassic-Lower Cretaceous sediments of the Berglum 1 and Uglev 1 wells, Denmark. Bull. Geol. Soc. Denmark 33, 239–252.Google Scholar
Scotchman, I.C. (1987) Clay diagenesis in the Kimmeridge Clay Formation, onshore UK, and its relation to organic maturation. Mineral. Mag. 51, 535–551.CrossRefGoogle Scholar
Sellwood, B.W. (1972) Regional environment changes across a Lower Jurassic stage-boundary in Britain. Palaeont. 15, 125–157.Google Scholar
Thomsen, E. (1984) A coal petrographical investigation of the well 2/11-1. Geol. Survey Denmark. Internal Report 38, 28 pp.Google Scholar
Thomsen, E., Lindgreen, H. & Wrang, P. (1983) Investigation on the source rock potential of Denmark. Geol Mijnbouw 62, 221–239.Google Scholar
Veblen, D.R. (1983a) Microstructure and mixed-layering in intergrown wonesite, chlorite, talc, biotite, and kaolinite. Am. Miner. 68, 566–580.Google Scholar
Veblen, D.R. (1983b) Exsolution and crystal chemistry of the sodium mica wonesite. Am. Miner. 68, 554–565.Google Scholar
Vollset, J. & Dore, A.G. (1984) A revised Triassic and Jurassic lithostratigraphic nomenclature for the Norwegian North Sea. NPD Bull. 3, Stavanger, 53 pp.Google Scholar