Carbon-isotope stratigraphy recorded by the Cenomanian–Turonian Oceanic Anoxic Event: correlation and implications based on three key localities
Tóm tắt
We present new, detailed carbon-isotope records for bulk carbonate, total organic carbon (TOC) and phytane from three key sections spanning the Cenomanian–Turonian boundary interval (Eastbourne, England; Gubbio, Italy; Tarfaya, Morocco), with the purpose of establishing a common chemostratigraphic framework for Oceanic Anoxic Event (OAE) 2. Isotope curves from all localities are characterized by a positive carbon-isotope excursion of
Từ khóa
Tài liệu tham khảo
Arthur M.A. Premoli Silva I. 1982. Development of widespread organic carbon-rich strata in the Mediterranean Tethys. In: Schlanger S.O. & Cita M.B. (eds) Nature and Origin of Cretaceous Carbon-Rich Facies . Academic Press London 7–54.
Bown P.R. & Young J.R. 1998. Techniques. In: Bown P.R. (ed.) Calcareous Nannofossil Biostratigraphy . Chapman and Hall London 16–28.
Bralower T.J. Leckie R.M. Sliter W.V. & Thierstein H.R. 1995. An integrated Cretaceous microfossil biostratigraphy. In: Berggren W.A. Kent D.V. Aubry M.P. & Hardenbol J. (eds) Geochronology Time Scales and Global Stratigraphic Correlation . Society of Economic Paleontologists and Mineralogists Special Publications 54 65–79.
El Albani A. Kuhnt W. Luderer F. Herbin J.P. & Caron M. 1999. Palaeoenvironmental evolution of the Late Cretaceous sequence in the Tarfaya Basin (southwest of Morocco). In: Cameron N.R. Bate R.H. & Clure V.S. (eds) The Oil and Gas Habitats of the South Atlantic . Geological Society London Special Publications 153 223–240.
Hayes J.M. 2001. Fractionation of carbon and hydrogen isotopes in biosynthetic processes. In: Valley J.W. & Cole D.R. (eds) Stable Isotope Geochemistry . Mineralogical Society of America Reviews in Mineralogy and Geochemistry 43 225–277.
Kennedy, W.J., Walaszczyk, I. & Cobban, W.A. 2000. Pueblo, Colorado, USA, candidate Global Boundary Stratotype Section and point for the base of the Turonian stage of the Cretaceous, and for the base of the middle Turonian substage, with a revision of the Inoceramidae (Bivalvia). Acta Geologica Polonica, 50, 295–334.
Kuhnt, W., Chellai, El H., Holbourn, A. , et al., 2001. Centennial records of Cretaceous paleoceanographic events and sea-level fluctuations in the Moroccan Tarfaya–Layoune basin. EOS Transactions, American Geophysical Union, 82, 32.
Kuypers, M.M.M., Pancost, R.D., Nijenhuis, I.A., Sinninghe Damsté, J.S. 2002. Enhanced productivity led to increased organic carbon burial in the euxinic North Atlantic basin during the Cenomanian/Turonian oceanic anoxic event. Paleoceanography, 17, 1–13.
Luderer, F. & Kuhnt, W. 1997. A high resolution record of the Rotalipora extinction in laminated organic-carbon rich limestones of the Tarfaya Atlantic coastal basin (Morocco). Annales de la Société Géologique du Nord, 5, 199–205.
Pratt L.M. & Threlkeld C.N. 1984. Stratigraphic significance of 13 C/ 12 C ratios in mid-Cretaceous rocks of the Western Interior U.S.AÒ. In: Stott D.F. & Glass D.J. (eds) The Mesozoic of Middle North America . Canadian Society of Petroleum Geologists Memoirs 9 305–312.
Pratt L.M. Arthur M.A. Dean W.E. & Scholle P.A. 1993. Paleoceanographic cycles and events during the Late Cretaceous in the Western Interior Seaway of North America. In: Caldwell W.G.E. & Kauffman E.G. (eds) Cretaceous Evolution of the Western Interior Basin of North America . Geological Association of Canada Special Papers 39 333–353.
Roth P.H. 1978. Cretaceous nannoplankton biostratigraphy and oceanography of the northwestern Atlantic Ocean. In: Benson W.E. & Sheridan R.E. (eds) et al Initial Reports of the Deep Sea Drilling Project 44 . US Government Printing Office Washington DC 731–760.
Schlanger, S.O. & Jenkyns, H.C. 1976. Cretaceous oceanic anoxic events: causes and consequences. Geologie en Mijnbouw, 55, 179–184.
Schlanger S.O. Arthur M.A. Jenkyns H.C. & Scholle P.A. 1987. The Cenomanian/Turonian Oceanic Anoxic Event I. Stratigraphy and distribution of organic carbon-rich beds and the marine δ 13 C excursion. In: Brooks J. & Fleet A.J. (eds) Marine Petroleum Source Rocks . Geological Society London Special Publications 26 371–399.
Scholle, P.A. & Arthur, M.A. 1980. Carbon-isotope fluctuations in Cretaceous pelagic limestones: potential stratigraphic and petroleum exploration tool. AAPG Bulletin, 64, 67–87.
Watkins D.K. 1985. Biostratigraphy and paleoecology of calcareous nannofossils in the Greenhorn marine cycle. In: Pratt L.M. Kauffman E.G. & Zelt F.B. (eds) Fine-grained Deposits and Biofacies of the Cretaceous Western Interior Seaway: Evidence of Cyclic Sedimentary Processes . SEPM Field Trip Guidebook 4 151–156.