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Microbial crust with Frutexites(?) and iron staining in chalks: Albian–Cenomanian boundary, Hunstanton, UK

Published online by Cambridge University Press:  09 April 2014

J. E. ANDREWS ,
A. C. KENDALL  and
A. HALL
J. E. ANDREWS*
Affiliation:
School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK
A. C. KENDALL
Affiliation:
School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK
A. HALL
Affiliation:
School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK
*
†Author for correspondence: [email protected]
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Abstract

New petrographic observations and stable isotope data help reinterpret the complex sedimentology of the Albian–Cenomanian boundary exposed in the famous red and white chalks of the cliff section at Hunstanton in Norfolk, UK. Thin-section analysis of a prominent crust at the top of the Hunstanton Red Chalk Formation reveals fossil microstructures attributable to the microbe Frutexites. These Red Chalk microstructures are less bushy that Frutexites sensu stricto, and poor preservation, in part caused by later diagenetic iron migration, means they are identified only tentatively as Frutexites. Stable oxygen isotope values from the crust are similar to those from early diagenetic nodular chalks immediately below the crust, and to partially altered chalks elsewhere in Norfolk. The δ18O data are interpreted as Albian seafloor depositional values albeit slightly altered by subsequent meteoric diagenesis. The microbial affinities of Frutexites are not yet proven; thus, the presence of Frutexites alone is not diagnostic of either photic zone or deep-water sedimentation. However, the presence of Frutexites(?) suggests that the red colour of the Hunstanton Red Chalk is due, at least in part, to the mediation of iron-fixing microbes in the accumulating chalk sediment at a dysoxic–anoxic interface. Centimetre-scale columnar and nodular structures above the ‘Frutexites crust’ that project upwards into the basal Paradoxica Bed of the overlying Ferriby Chalk Formation are sites of localized syndepositional iron staining. These nodules are not stromatolitic or microbial and are not evidence for deposition in shallow-water or intertidal settings.

Keywords

Red Chalkmicrobial cruststromatolitestable isotopesCretaceousnodular chalk
Type
Original Articles
Information
Geological Magazine , Volume 152 , Issue 1 , January 2015 , pp. 1 - 11
Copyright
Copyright © Cambridge University Press 2014 

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References

Anderton, R., Bridges, P. H., Leeder, M. R. & Sellwood, B. W. 1979. A Dynamic Stratigraphy of the British Isles, 1st ed. London: Allen and Unwin.Google Scholar
Andrews, J. E. 1983. A faunal correlation of the Hunstanton Red Rock with the contemporaneous Gault Clay, and its implications for the environment of deposition. Bulletin of the Geological Society of Norfolk 33, 3–26.Google Scholar
Bohm, F. & Brachert, T. C. 1993. Deep water stromatolites and Frutexites Maslov from the Early and Middle Jurassic of S-Germany and Austria. Facies 28, 145–68.Google Scholar
Brett, C. E., McLaughlin, P. I., Histon, K., Schindler, W. & Ferretti, A. 2012. Time-specific aspects of facies: state of the art, examples and possible causes. Palaeogeography, Palaeoclimatology, Palaeoecology 367–368, 6–18.Google Scholar
Ferretti, A., Cavalazzi, B., Barbieri, R., Westall, F., Foucher, F. & Todesco, R. 2012. From black-and-white to colour in the Silurian. Palaeogeography, Palaeoclimatology, Palaeoecology 367–368, 178–92.CrossRefGoogle Scholar
Gallois, R. W. 1994. Geology of the Country Around Kings Lynn and The Wash. Memoir for 1:50000 geological sheet 145 and part of 129 (England and Wales). London: HMSO.Google Scholar
Gallois, R. W. & Morter, A. A. 1982. The stratigraphy of the Gault of East Anglia. Proceedings of the Geologists’ Association 93, 351–68.Google Scholar
Gaunt, G. D., Fletcher, T. P. & Wood, C. J. 1992. Geology of the Country Around Kingston upon Hull and Brigg. Memoir for the 1:50000 Geological Sheets 80 and 89 (England and Wales). London: HMSO.Google Scholar
Hurley, N. F. & Van der Voo, R. 1990. Magnetostratigraphy, Late Devonian iridium anomaly, and impact hypotheses. Geology 18, 291–4.Google Scholar
Immenhauser, A. & Scott, R. W. 1999. Global correlation of middle Cretaceous sea-level events. Geology 27, 551–4.2.3.CO;2>CrossRefGoogle Scholar
Jeans, C. V. 1973. The Market Weighton Structure; tectonics, sedimentation and diagenesis during the Cretaceous. Proceedings of the Yorkshire Geological Society 39, 409–44.CrossRefGoogle Scholar
Jeans, C. V. 1980. Early submarine lithification in the Red Chalk and the Lower Chalk of Eastern England. Proceedings of the Yorkshire Geological Society 43, 81–157.CrossRefGoogle Scholar
Mamet, B. & Préat, A. 2006. Iron-bacterial mediation in Phanerozoic red limestones: state of the art. Sedimentary Geology 185, 147–57.Google Scholar
Maslov, V. P. 1960. Stromatolity (ick genezis, metodizucheniya, svjaz'sfatsiyami i geologicheskoe zanachenie na primere Ordovicka Sibirskoj Platromy). Trudy Instituta Geologii i Geofiziki, Moskva 41, 1–188.Google Scholar
Miller, K. G., Kominz, M. A., Browning, J. V., Wright, J. D., Mountain, G. S., Katz, M. E., Sugarman, P. J., Cramer, B. S., Christie-Blick, N. & Pekar, S. F. 2005. The Phanerozoic record of global sea-level change. Science 310, 1293–8.Google Scholar
Mortimore, R. N., Wood, C. J. & Gallois, R. W. 2001. British Upper Cretaceous Stratigraphy. Peterborough: Joint Nature Conservation Committee.Google Scholar
Myrow, P. M. & Coniglio, M. 1991. Origin and diagenesis of crypto-biotic Frutexites in the Chapel Island Formation (Vendian to Early Cambrian) of southeast Newfoundland, Canada. Palaios 6, 572–85.Google Scholar
Owen, H. G. 1995. The upper part of the Carstone and the Hunstanton Red Chalk (Albian) of the Hunstanton Cliff, Norfolk. Proceedings of the Geologists’ Association 106, 171–81.Google Scholar
Playford, P. E., Cockbain, A. E., Druce, E. C. & Wray, J. L. 1976. Devonian stromatolites from the Canning Basin, Western Australia. In Stromatolites (ed. Walter, M. R.), pp. 543–63. Developments in Sedimentology 20. Amsterdam: Elsevier Scientific Publishing Company.Google Scholar
Playford, P. E., Mclaren, D. J., Orth, C. J., Gilmore, J. S. & Goodfellow, W. D. 1984. Iridium anomaly in the Upper Devonian of the Canning Basin, Western Australia. Science 226, 437–39.Google Scholar
Préat, A., Mamet, B., Ridder, C. D., Boulvain, F. & Gillan, D. 2000. Iron bacterial and fungal mats, Bajocian stratotype (Mid-Jurassic, northern Normandy, France). Sedimentary Geology 137, 107–26.Google Scholar
Price, G. D. & Harwood, E. 2012. Isotopic analysis of belemnites and brachiopods from the Cretaceous (Albian) Hunstanton Red Chalk Formation (Hunstanton, Norfolk, UK). Proceedings of the Geologists’ Association 123, 479–85.Google Scholar
Rawson, P. F. 1992. Chapter 10: Cretaceous. In Geology of England and Wales (eds Duff, P. M. D. & Smith, A. J.), pp. 355–88. Bath: Geological Society Publishing House.Google Scholar
Reolid, M. & Molina, J. M. 2010. Serpulid-Frutexites assemblage from shadow-cryptic environments in Jurassic marine caves, Betic Cordillera, southern Spain. Palaios 25, 468–74.Google Scholar
Reolid, M. & Nieto, L. M. 2010. Jurassic Fe-Mn macro-oncoids from pelagic swells of the External Subbetic (Spain): evidences of microbial origin. Geologica Acta 8, 151–68.Google Scholar
Scholle, P. A. 1974. Diagenesis of Upper Cretaceous Chalks from England. In Pelagic Sediments on Land and Under the Sea (eds Hsu, K. J. & Jenkyns, H. C.), pp. 177–210. Special Publication of the International Association of Sedimentologists no.1.Google Scholar
Walter, M. R. & Awramik, S. M. 1979. Frutexites from stromatolites of the Gunflint Iron Formation of Canada, and its biological affinities. Precambrian Research 9, 23–33.Google Scholar
Wendt, J. 1988. Condensed carbonate sedimentation in the late Devonian of the eastern Anti-Atlas (Morocco). Eclogae Geologicae Helvetiae 81, 155–73.Google Scholar
Woolhouse, G., Andrews, J. E., Marca-Bell, A. & Dennis, P. F. 2009. Geochemical constraints of the origin of enigmatic cemented Chalks, Norfolk, UK. Geological Magazine 146, 291–99.Google Scholar