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Calcite cements and the stratigraphical significance of the marine [delta^13]C carbonate reference curve for the Upper Cretaceous Chalk of England

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EN
Abstrakty
EN
The hypothesis of Jarvis et al. (2006) that a [delta^13]C (calcite) reference curve based upon bulk samples from the Upper Cretaceous Chalk of England can be used as a primary criterion for trans-continental correlation is reviewed in the light of new stable isotope data from the Upper Albian and Cenomanian chalks of eastern England and from the Cenomanian to Campanian chalks of southern England. Evidence demonstrates that in the coloured chalks of eastern England the cements invariably have positive [delta^13]C values (up to 3.5[per mil]) except where they have been affected by hardground development when the cements have negative [delta^13]C values down to -6.5[per mil]. in contrast, the White Chalk of southern England may have cements with [delta^13]C values as negative as -8[per mil]. Modelling indicates that the coloured chalks may preserve a truer record of the primary palaeo-oceanographic [delta^13]C signal than the white and grey chalks of southern England. it is suggested that (1) many of the 72 isotope events described from the [delta^13]C (calcite) reference curve and proposed for correlation may reflect the effects of variations in the type and extent of calcite cementation; and (2) until much more is known about the patterns of calcite cementation in the Upper Cretaceous Chalk the use of minor isotope events for trans-continental stratigraphic correlation can only be applied with the utmost caution.
Rocznik
Strony
173--196
Opis fizyczny
Bibliogr. 32 poz., fot., rys., tab.,
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autor
autor
autor
  • Department of Geography, University of Cambridge, Downing Street, Cambridge CB2 3EN, UK
Bibliografia
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  • 6. Gale, A.S., Kennedy, W.J., Voigt, S. and Walaszczyk, I. 2005. Stratigraphy of the Upper Cenomanian – Lower Turonian Chalk succession at Eastbourne, Sussex, U.K.: ammonites, inoceramid bivalves and stable carbon isotopes. Cretaceous Research, 26, 460–487.
  • 7. Gallois, R.W. 1994. Geology of the country around King’s Lynn and the Wash. Memoirs of the British Geological Survey Sheet 145 and part of 129 (England and Wales), 210 pp.
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  • 11. Hu, X-F, Jeans, C.V. and Dickson, J.A.D. 2012. Geochemical and stable isotope patterns of calcite cementation in the Upper Cretaceous Chalk, UK: Direct evidence from calcite-filled vugs in brachiopods. Acta Geologica Polonica, 62 (2), 143–172. [this issue]
  • 12. Hu, X-F, Long, D. and Jeans, C.V. in press. The calcite cement and the smectite clay assemblage of the Upper Cretaceous Chalk. Clay Minerals.
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  • 14. Jarvis, I., Gale, A.S., Jenkyns, H.C. and Pearce, M.A. 2006. Secular variation in late Cretaceous carbon isotopes: a new δ13C carbonate reference for the Cenomanian-Campanian (99.6-70.6 Ma). Geological Magazine, 143, 561–608.
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  • 16. Jeans, C.V. 1984. Patterns of mineral diagenesis; an introduction. Clay Minerals, 19, 263–270
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  • 18. Leary, P.N. and Peryt, D. 1991. The late Cenomanian oceanic anoxic event in the western Anglo-Paris Basin and the southeast Danish-Polish Trough: survival strategies of and recolonisation by benthonic foraminifera. Historical Biology, 5, 321–338
  • 19. Mitchell S.F. 1995. Lithostratigraphy and biostratigraphy of the Hunstanton Formation (Red Chalk, Cretaceous) succession at Speeton, North Yorkshire, England. Proceedings of the Yorkshire Geological Society, 50, 285–303.
  • 20. Mitchell S.F. 1996. Foraminiferal assemblages from the late Lower and Middle Cenomanian of Speeton (North Yorkshire, UK): relationships with sea-level fluctuations and watermass distribution. Journal of Micropalaeontology, 15, 37–54.
  • 21. Mitchell, S.F., Paul, C.R.C. and Gale, A.S. 1996. Carbon isotopes and sequence stratigraphy. In: J.A Hallam and J.F. Aitken (Eds), High resolution sequence stratigraphy: innovations and applications,. Geological Society of London Special Publications, 104, 11–24
  • 22. Mortimore, R.N., Wood, C.J. and Gallois, R.W. 2001. British Upper Cretaceous Stratigraphy. Geological Conservation Review Series 23, Joint Nature Conservation Committee, Peterborough, U.K., 558 pp.
  • 23. Mortimore R.N. 2011. A chalk revolution: what have we done to the Chalk of England. Proceedings of the Geologists’ Association, 122, 232–297.
  • 24. Mortimore R.N. 2012. Making sense of Chalk: a total rock approach to its Engineering Geology. Quarterly Journal of Engineering Geology and Hydrology, 45.
  • 25. Paul, C.R.C., Lamolda, M.A., Mitchell, S.F., Vaziri, M.R., Gorostidi, A. and Marshall, J.D. 1999. The Cenomanian–Turonian boundary at Eastbourne (Sussex, U.K.): a proposed European reference section. Palaeogeography, Palaeoclimatology, Palaeoecology, 150, 83–121.
  • 26. Paul, C.R.C., Mitchell, S.F., Marshall, J.D., Leary, P.N., Gale, A.S., Duane, A. M. and Ditchfield, P.W. 1994. Palaeoceanographic events in the Middle Cenomanian of northwest Europe. Cretaceous Research, 15, 707–738.
  • 27. Scholle, P.A. and Arthur, M.1980. Carbon isotope fluctuations in Cretaceous pelagic limestones: potential stratigraphic and and petroleum exploration tool. Bulletin of the American Association of Petroleum Geologists 64, 67–87
  • 28. Scholle, P.A. and Kennedy, W.J. 1974. Isotopic and petrophysical data on hardgrounds from Upper Cretaceous chalks from Western Europe. Abstract Program Geological Society of America, 6, 943.
  • 29. Tsikos, H., Jenkyns, H.C., Walsworth-Bell, B., Petrizzo, M.R., Forster, A., Kolonic, S., Erba, E., Premoli Silva, I., Baas, M., Wagner, T. and Sinninge Damsté, J.S. 2004. Carbonisotope stratigraphy recorded by the Cenomanian–Turonian Anoxic Event: correlation and implications based on three key localities. Journal of the Geological Society, London, 161, 711–719.
  • 30. Voigt, S., Gale, A.S. and Voigt, T. 2006. Sea level change, carbon cycling and palaeoclimate during the Later Cenomanian of northwest Europe: an integrated palaeoenvironmental analysis. Cretaceous Research, 27, 836–858.
  • 31. White, H. J. O.1921. A short account of the geology of the Isle of Wight. Memoirs of the Geological Survey, 219 pp.
  • 32. Wood, C.J. and Smith, E.G. 1978. Lithostratigraphical classification of the Chalk in North Yorkshire, Humberside and Lincolnshire. Proceedings of the Yorkshire Geological Society, 42, 263–287.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BGPK-3576-3599
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