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Patterns of diagenesis in the Sherwood Sandstone Group (Triassic), United Kingdom

Published online by Cambridge University Press:  09 July 2018

S. D. Burley
S. D. Burley*
Affiliation:
Department of Geology, University of Hull, Cottingham Road, Hull, Humberside HU6 7RX
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Abstract

The Triassic Sherwood Sandstone Group comprises a complex of continental red beds deposited by a major fluvial system flowing dominantly down a northerly inclined palaeoslope. Sedimentation took place in several distinct, tectonically active basins with varying maximum burial depths, ranging from shallow (<1 km) to deep (>3 km). Despite proximal to distal variations in stream type, a distinct suite of early diagenetic events can be recognized throughout all the depositional basins, which is related to the depositional environment. These events are best preserved in those basins with shallow burial histories, and show many similarities to the processes recorded from modern red beds of the Sonoran Desert, Baja California, although a more advanced grade of diagenesis has been reached in the Sherwood Sandstone. On the margins of the Irish Sea Basin in Cumbria, where burial was shallow, these early diagenetic textures are well preserved. The detrital grains underwent changes aimed at reaching equilibrium with the near-surface chemical environment. Unstable silicates were dissolved or replaced and the released ions were capable of precipitating authigenic phases, typically mixed-layer illite-smectite, K-feldspar, non-ferroan carbonates and hematite. Lateral variations in the early diagnetic assemblages reflect chemical and spatiotemporal changes ofinterbasin depositional and diagenetic environments. Deeply buried equivalents in the Irish Sea reached a maximum burial depth in excess of 3 km towards the end of the Mesozoic. Superimposed on the early diagenetic fabric are a series of depth-related changes. In the absence of early cements, compaction reduced porosity to low levels. Mixed-layer illite-smectites were converted to highly crystalline illites with low Fe and Mg contents. Early framework-preserving non-ferroan carbonates were extensively dissolved, generating widespread secondary porosity. Late pore-filling carbonate cements comprise ferroan dolomites and ankerites with compositions up to Ca(Ca0·02Mg0·43Fe0·53Mn0·02). Following late Mesozoic burial, inversion of the Triassic basins resulted in the re-exposure of basin margin sequences and shallow burial basins. Modern groundwaters are typically very dilute, with essentially neutral pH, and are capable of dissolving carbonate, sulphate and halite cements. In the Wessex Basin, however, the Triassic sandstones of the South Devon aquifer have been extensively modified by the percolation of post-inversion acidic groundwaters. These low-pH waters have resulted in the in situ breakdown of feldspar to produce abundant authigenic kandite, widespread dissolution of carbonate cements and removal of early-formed iron oxide cements. In contrast, the concealed, deeply buried eastern margin of the Wessex Basin exhibits a diagenetic evolution resultant of deep burial and has no development of authigenic kandite.

Type
Research Article
Information
Clay Minerals , Volume 19 , Issue 3 , June 1984 , pp. 403 - 440
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1984

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References

Ali, A.D. & Turner, P. (1982) Authigenic K-feldspar in the Bromsgrove Sandstone Formation (Triassic) of Central England. J. Sedim. Petrol. 52, 187–198.Google Scholar
Arthurton, R.S., Burgess, I.C. & Holliday, D.W. (1978) Permian and Triassic. Pp. 189–206 in: The Geology of the Lake District (Moseley, F., editor). Yorkshire Geological Society Occasional Publication, No. 3. Google Scholar
Audley-Charles, M.G. (1970) Triassic palaeogeography of the British Isles. Q. J. Geol. Soc. 126, 50–81.Google Scholar
Bailey, S.W. (1980) Summary of recommendations of AIPEA nomenclature committee. Clay Miner. 15, 85–93.Google Scholar
Bjørlykke, K., Elverhøi, A. & Malm, O. (1979) Diagenesis in Mesozoic sandstones from Spitzbergen and the North Sea—a comparison. Geol. Rundschau 68, 1152–1171.CrossRefGoogle Scholar
Boles, J.R. (1978) Active ankerite cementation in the subsurface Eocene of southwest Texas. Contrib. Mineral. Petrol. 68, 13–22.Google Scholar
Boles, J.R. & Franks, S.G. (1979) Clay diagenesis in Wilcox sandstones of south-west Texas; implications of smectite diagenesis on sandstone cementation. J. Sedim. Petrol. 49, 55–70.Google Scholar
Burke, K. (1976) Development of graben associated with the initial rupture of the Atlantic Ocean. Tectonophysics 36, 93–112.Google Scholar
Carothers, W.W. & Kharaka, Y.K. (1980) Stable evolution of HCO3 -, in oilfield waters: implications for the origin of CO2 . Geochim. Cosmochim. Acta 44, 323–332.CrossRefGoogle Scholar
Challinor, A. & Outlaw, B.D. (1981) Structural evolution of the North Viking Graben. Pp. 104–109 in: Petroleum Geology of the Continental Shelf of North West Europe (Illing, L. V. & Hobson, G. D., editors). Heyden, London.Google Scholar
Colter, V.S. (1978) Exploration for gas in the Irish Sea. Geol. en Mijnb. 57, 503–516.Google Scholar
Cooke, R.U. & Warren, A. (1973) Geomorphology in Deserts. Batsford, London, 374 pp.CrossRefGoogle Scholar
Craig, H. (1957) Isotopic standards for carbon and oxygen and correction factors for mass spectrometric analysis of carbon dioxide. Geochim. Cosmochim. Acta, 12, 133–149.Google Scholar
Curtis, C.D. (1976) Stability of minerals in surface weathering reactions—a general thermochemical approach. Earth Surface Process 1, 63–70.Google Scholar
Curtis, C.D. (1977) Sedimentary geochemistry: environments and processes dominated by involvement of an aqueous phase. Phil. Trans. R. Soc. London (A) 286, 353–372.Google Scholar
Curtis, C.D. (1978) Possible links between sandstone diagenesis and depth-related geochemical reactions in enclosing mudstones. J. Geol. Soc. 135,’ 107–118.CrossRefGoogle Scholar
Curtis, C.D. (1983) Link between aluminium mobility and destruction of secondary porosity. Bull. Am. Assoc. Petrol. Geol. 67, 380–393.Google Scholar
Dott, R.H. (1964) Wacke, Grewacke and matrix—what approach to immature sandstone classification?. J. Sedim. Petrol. 43, 625–632.Google Scholar
Downing, R.A. & Howitt, F. (1969) Saline groundwaters in the Carboniferous rocks of the East Midlands in relation to the geology. Q. J. Eng. Geol. 1, 241–269.Google Scholar
Dunham, A.C & Wilkinson, F.C.F. (1978) Accuracy, precision and detection limits of energy-dispersive electron microprobe analysis of silicates. X-Ray Spectrometry 7, 50–56.Google Scholar
Dunnoyer de Segonzac, G. (1970) The transformation of clay minerals during diagenesis and low-grade metamorphism, a review. Sedimentology 15, 281–346.Google Scholar
Edmunds, W.M. (1975) Geochemistry of brines in the Coal Measures of northeast England. Trans. Instit. Min. Metall. (B) 84, 39–52.Google Scholar
Edmunds, W.M. & Morgan-Jones, M. (1976) Geochemistry of groundwaters in British Triassic sandstones the Wolverhampton-East Shropshire Area. Q. J. Eng. Geol. 9, 83–101.Google Scholar
Edmunds, W.M., Bath, A.H. & Miles, D.L. (1982a) Hydrochemical evolution of the East Midlands Triassic Aquifer, England. Geochim. Cosmochim. Acta 46, 2069–2082.CrossRefGoogle Scholar
Edmunds, W.M., Bath, A.H. & Miles, D.L. (1982b) Pore fluid geochemistry of the Bridport Sands (Lower Jurassic) and the Sherwood Sandstone (Triassic) intervals of the Winterbourne Kingston borehole, Dorset. Pp. 149–163 in: The Winterbourne Kingston borehole, Dorset (Rhys, G. H., Lott, G. K. & Calver, M. A., editors). Rep. Inst. Geol. Sci. No. 81/3.Google Scholar
Falcon, N.L. & Kent, P.E. (1960) Geological results of petroleum exploration in Britain, 1945-1957. Mem. Geol. Soc. London 2, 56 pp.Google Scholar
Fanning, D.S. & Keramidas, V.Z. (1977) Micas. Pp. 195–292. in: Minerals in Soil Environments (Dixon, J. B. & Weed, S. B., editors). Soil Sci. Soc. America, Madison, Wisconsin.Google Scholar
Foscolos, A.E. & Powell, T.G. (1979a) Mineralogical and geochemical transformation of clays during burial diagenesis (catagenesis) in relation to oil generation. Proc. 6th. Int. Clay Conf. Oxford, 261-270.CrossRefGoogle Scholar
Foscolos, A.E. & Powell, T. G. (1979b) Catagenesis in shales and occurrence of authigenic clays in sandstones, North Sabine H-49 well, Canadian Arctic Islands. Can. J. Earth Sci. 16, 1309–1314.Google Scholar
Glennie, K.W. & Boegner, P.L.E. (1981) Sole Pit Inversion Tectonics. Pp. 110–120 in: Petroleum Geology of the Continental Shelf of North West Europe (Illing, L. V. & Hobson, G. D., editors). Heyden, London.Google Scholar
Güven, N., Hower, W.F. & Davies, D.K. (1980) Nature of authigenic illites in sandstone reservoirs. J. Sedim. Petrol. 50, 761–766.Google Scholar
Hallam, A. (1972) Relation of Palaeogene ridge and basin structures and volcanicity in the Hebrides and Irish Sea regions of the British Isles to the opening of the North Atlantic. Earth Planet. Sci. Letters 16, 171–177.Google Scholar
Hemingway, J.E. & Riddler, G.P. (1982) Basin inversion in North Yorkshire. Trans. Inst. Min. Metall. (B) 91, 175–186.Google Scholar
Henson, M.R. (1970) The Triassic rocks of south Devon. Proc. Ussher Soc. 2, 172–177.Google Scholar
Ixer, R.A., Turner, P. & Waugh, B. (1979) Authigenic iron and titanium oxides in Triassic red beds (St. Bees Sandstone), Cumbria, Northern England. Geol. J. 14, 179–192.Google Scholar
Jeans, C.V., Merriman, J.G., 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
Kent, P.E. (1975) The tectonic development of Great Britain and the surrounding seas. Pp. 3–28 in: Petroleum and the Continental Shelf of North West Europe (Woodland, A. W., editor). Applied Science Publishers Ltd, Barking, Essex, UK.Google Scholar
Kent, P.E. (1980) Subsidence and uplift in East Yorkshire and Lincolnshire: a double inversion. Proc. Yorks. Geol. Soc. 42, 505–524.Google Scholar
Klappa, C.F. (1980) Rhizoliths in terrestrial carbonates: classification, recognition, genesis and significance. Sedimentology 27, 613–629.Google Scholar
Knox, R.W. O’B., Burgess, W.G., Wilson, K.S. & Bath, A.H. (1984) Diagenetic influences on reservoir properties of the Sherwood Sandstone (Triassic) in the Marchwood geothermal borehole, Southampton, UK. Clay Miner. 19, 441–456.Google Scholar
Land, L.S. & Dutton, S.P. (1978) Cementation of a Pennsylvanian deltaic sandstone: isotopic data. J. Sedim. Petrol. 48, 1167–1176.Google Scholar
Lott, G.K. & Strong, G.E. (1981) The petrology and petrography of the Sherwood Sandstone (?Middle Triassic) of the Winterbourne Kingston borehole, Dorset, England. Pp. 135–142 in: The Winterbourne Kingston borehole, Dorset, England (Rhys, G. H., Lott, G. K. & Calver, M. A., editors). Rep. Inst. Geol. Sci. No. 81/3.Google Scholar
Marie, J.P.P. (1975) Rotliegendes stratigraphy and diagenesis. Pp. 205–210 in: Petroleum and the Continental Shelf of North West Europe (Woodland, A. W., editor). Applied Science Publishers Ltd. Google Scholar
McBride, E.F. (1963) A classification of common sandstones. J. Sedim. Petrol. 33, 664–669.Google Scholar
McCrea, J.M. (1950) On the Isotopic chemistry of carbonates and a palaeotemperature scale. J. Chem. Phys. 18, 849–857.Google Scholar
Milliken, K.L., Land, L.S. & Loucks, R.G. (1981) History of burial diagenesis determined from isotope geochemistry, Frio Formation, Brazoria County, Texas. Bull. Am. Ass. Petrol. Geol. 65, 1397–1413.Google Scholar
Pattison, J., Smith, D.B. & Warrington, G. (1973) A review of late Permian and early Triassic biostratigraphy in the British Isles. Pp. 220–260 in : The Permian and Triassic Systems and their Mutual boundaries (Logan, A. & Hills, L. V., editors). Can. Soc. Petrol. Geol. Mem. 2.Google Scholar
Pittman, E.D. (1979) Porosity, diagenesis and productive capability of sandstone reservoirs. Pp. 159–173 in: Aspects of Diagenesis (Scholle, P. A. and Schluger, P. R., editors). SEPM Spec. Pubi. 26.Google Scholar
Price, M. & Allen, D.J. (1982) The production test and resource assessment of the Marchwood geothermal borehole. Unpubl. Inst. Geol. Sci. Report. Google Scholar
Ruhe, R.V. (1967) Geomorphic surfaces and surficial deposits in Southern New Mexico. State Bureau Mines Min. Res. Mem. 18.Google Scholar
Schmidt, V. & McDonald, D.A. (1979a) The role of secondary porosity in sandstones. Pp. 209–225 in: Aspects of Diagenesis (Scholle, P. A. & Schluger, P. R., editors). SEPM Spec. Pubi. 26. Google Scholar
Schmidt, V. & McDonald, D.A. (1979b) Texture and recognition of secondary porosity in sandstones. Pp. 209–225 in: Aspects of Diagenesis (Scholle, P. A. & Schluger, P. R., editors). SEPM Spec. Pubi. 26.Google Scholar
Sherrell, F.W. (1970) Some aspects of the Triassic aquifer in east Devon and west Somerset. Q. J. Eng. Geol. 2, 255–286.CrossRefGoogle Scholar
Spears, D.A. (1983) Geochemistry and mineralogy of Triassic sandstones and implications for groundwater composition. Mineral. Mag. 47, 183–190.Google Scholar
Steel, R. (1977) Triassic rift basins of North West Scotland—their configuration, infilling and development. MNNSS 7, Norwegian Petroleum Society.Google Scholar
Steel, R. & Thompson, D.B. (1983) Structures and textures in Triassic (Scythian) braided stream conglomerates ('Bunter’ Pebble Beds) in the Sherwood Sandstone Group, North Staffordshire, England. Sedimentology 30, 341–368.CrossRefGoogle Scholar
Stoneley, R. (1982) The structural development of the Wessex Basin. J. Geol. Soc. 139, 545–554.Google Scholar
Thompson, D.B. (1969) Dome-shaped aeolian dunes in the Frodsham Member of the so-called ‘Keuper’ Sandstone Formation (Scythian-Anisian: Triassic) at Frodsham, Cheshire. Sediment. Geol. 3, 263–289.CrossRefGoogle Scholar
Thompson, D.B. (1970) Sedimentation of the Triassic (Scythian?) red, pebbly sandstones in the Cheshire basin and its margins. Geol. J. 1, 183–215.Google Scholar
Turner, P. & Archer, R. (1977) The role of biotite in the diagenesis of red beds from the Devonian of Northern Scotland. Sediment. Geol. 19, 241–251.CrossRefGoogle Scholar
Walker, T.R., Larson, E.E. & Hoblitt, R.P. (1981) Nature and origin of haematite in the Moenkopi Formation (Triassic), Colorado Plateau: a contribution to the origin of magnetism in red beds. J. Geophys. 87, 318–333.Google Scholar
Walker, T.R., Waugh, B. & Crone, A.J. (1978) Diagenesis in first cycle desert alluvium of Cenozoic age, southwestern United States and northwestern Mexico. Bull. Geol. Soc. Am. 89, 19–32.Google Scholar
Walton, N.R.G. (1981) A hydrogeochemical study of the Triassic Sandstone aquifer in the Otter Valley outcrop area of East Devon. Rep. Inst. Geol. Sci. 81/5.Google Scholar
Warrington, G., Audley-Charles, M.G., Elliot, R.E., Evans, W.B., Ivimey-Cook, H.C., Kent, P.E., Robinson, P.L., Shotton, F.W. & Taylor, F.M. (1980) A correlation of the Triassic rocks of the British Isles. Geol. Soc. London. Spec. Rep. 13.Google Scholar
Waugh, B. (1978) Authigenic K-feldspar in British Permo-Triassic sandstones. J. Geol. Soc. London 135, 151–56.Google Scholar
Waugh, B. (1981) Field excursion to the Permo-Triassic of Cumbria. Poroperm Laboratories Ltd, Field Guide, 70 pp.Google Scholar
Wills, L.J. (1956) Concealed Coalfields. Blackie and Son Ltd., London, 208 pp.Google Scholar
Wilson, M.J. & Duthie, D.M.L. (1981) Some aspects of intrastratal alteration of biotite in the Old Red Sandstone. Scott. J. Geol. 17, 65–72.Google Scholar
Ziegler, P.A. (1981) Evolution of sedimentary basins in northwest Europe. Pp. 3–39 in: Petroleum Geology of the Continental Shelf of North West Europe (Illing, L. V. & Hobson, G. D., editors). Heyden, London.Google Scholar