1887
  1. Home
  2. A-Z Publications
  3. Basin Research
  4. Volume 17, Issue 1
  5. Article
Volume 17, Issue 1
  • E-ISSN: 1365-2117

Abstract

Abstract

Data acquired from petroleum exploration well 164/7‐1 drilled in the UK sector of the Rockall Trough have yielded fresh insights into the igneous and thermal history of this frontier region. The well targeted a large four‐way dip closed structure of presumed Mesozoic age named ‘The Dome Prospect’. The structure is now known to have a magmatic, rather than a purely structural origin, which was the preferred pre‐well interpretation. The well encountered 1.2 km of Palaeocene age basaltic lavas, overlying Late Cretaceous mudstones which were intruded by over 70 dolerite sills ranging from <1.5‐ to 152‐m thick. 40Ar/39Ar dating of the dolerite intrusions indicates an Early Palaeocene age (63–64±0.5 Ma), which are among the oldest 40Ar/39Ar dates recognised in the North Atlantic Igneous Province. Radiometric dating of the overlying basaltic lavas proved unsuccessful, because of excessive alteration. Biostratigraphic dating of underlying and overlying sedimentary strata was utilised to constrain the age of the lavas to Late Paleocene to Early Eocene age (∼55 Ma). Despite being related to two distinct events separated by ∼8 Ma, the intrusives and extrusives are compositionally similar. The basaltic rocks from well 164/7‐1 possess Sr–Nd isotopic, major and trace‐element geochemical compositions similar to other volcanic and intrusive rocks of the British Tertiary Igneous Province and represent partial melts of both lithospheric and asthenospheric mantle associated with the proto‐Icelandic mantle plume head.

Joint consideration of thermal maturity, potential fields and 3D seismic data indicate a deeper igneous body in addition to the sills encountered in well 164/7‐1. Jack‐up and arching mechanisms associated with both scales of intrusive body are believed to have developed the dome structure. The preferred interpretation is of a mafic laccolith, 17 km in diameter, ∼7 km thick, intruded at 64.5 Ma, situated ∼2.5 km below the bottom of the well. 3D thermal modelling suggests that all of Tranche 52 was thermally affected by the intrusion of the magmatic body. The thermal aureole, between 27 and 51 km in diameter, is not thought to play an important role in the hydrocarbon prospectivity of the surrounding Tranches in the NE Rockall Basin.

Results show that hydrocarbon exploration prospects that are circular in map view should be interpreted with caution on volcanic continental margins. In sedimentary basins, where salt domes and shale diapirs are absent and igneous rocks prevalent, periclinal structures such as ‘The Dome Prospect’ should undergo a thorough multi‐disciplinary risk assessment.

Loading

Article metrics loading...

/content/journals/10.1111/j.1365-2117.2005.00260.x
2005-02-28
2024-04-19

  • From This Site

    /content/journals/10.1111/j.1365-2117.2005.00260.x
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. Abraham, D.A. & Ritchie, J.D. (1991) The Darwin Complex, a Tertiary igneous centre in the Northern Rockall Trough. Scot. J. Geol., 27, 113–125.
    [Google Scholar]
  2. Anderson, D.L. (2000) The thermal state of the Upper Mantle; no role for Mantle plumes. Geophys. Res. Lett., 27, 3623–3626.
    [Google Scholar]
  3. Bailey, E.B., Clough, C.T., Wright, W.B., Richey, J.E. & Wilson, G.V. (1924) Tertiary and post‐tertiary geology of Mull, Loch Aline and Oban. Mem. Geol. Surv. Gt. Br. Scotl.
    [Google Scholar]
  4. Bell, J.D. (1976) The Tertiary intrusive complex on the Isle of Skye. Proc. Geol. Assoc., 87, 247–271.
     [Google Scholar]
  5. Bell, B.R. & Claydon, R.V. (1993) The cumulus and post‐cumulus evolution of chrome‐spinels in ultrabasic layered intrusions: evidence from the Cuillin Igneous Complex, Isle of Skye, Scotland. Contrib. Min. Petrol., 112, 242–253.
     [Google Scholar]
  6. Bell, B.R. & Jolley, D.W. (1997) Application of palynological data to the chronology of the Palaeogene lava fields of the British Province: implications for magmatic stratigraphy. J. Geol. Soc. London, 154, 701–708.
    [Google Scholar]
  7. Bell, B.R. & Williamson, I.T. (2002) Tertiary igneous activity. In: The Geology of Scotland (Ed. by N.H.Trewin ), pp. 371–407. The Geological Society, London.
    [Google Scholar]
  8. Berndt, C., Planke, S., Alvestad, E., Tsikalas, F. & Rasmussen, T. (2001) Seismic volcanostratigraphy of the Norwegian Margin: constraints on tectonomagmatic break-up processes. J. Geol. Soc. London, 158, 413–426.
     [Google Scholar]
  9. Boldreel, L.O. & Andersen, M.S. (1993) Late Paleocene to Miocene compression in the Faroes‐Rockall area. In: Petroleum Geology of NW Europe: Proceedings of the 4th Conference (Ed. by J.R.Parker ), pp. 1025–1034. The Geological Society, London.
    [Google Scholar]
  10. Boldreel, L.O. & Andersen, M.S. (1994) Tertiary development of the Faeroe‐Rockall Plateau based on reflection seismic data. Bull. Geol. Surv. Denmark, 41, 162–180.
    [Google Scholar]
  11. Bott, M.H.P. & Tantrigoda, D.A. (1987) Interpretation of the gravity and magnetic anomalies over the Mull Tertiary intrusive complex, NW Scotland. J. Geol. Soc. London, 144, 17–28.
    [Google Scholar]
  12. Bujak, J. & Mudge, D. (1996) A stratigraphic study of wells 163/6‐1A, 164/25‐1 and 164/25‐2. Proprietary report by David Mudge Associates and the Lexus Group.
  13. Burnham, K. & Braun, R.L. (1989) Development of a detailed model of petroleum formation, destruction, and expulsion from lacustrine and marine source rocks. Adv. Organ. Geochem., 16, 27–39.
    [Google Scholar]
  14. Butler, R.W.H. & Hutton, D.H.W. (1994) Basin structure and Tertiary magmatism on Skye, NW Scotland. J. Geol. Soc. London, 151, 931–944.
    [Google Scholar]
  15. Chambers, L.M. & Pringle, M.S. (2001) Age and duration of activity at the Isle of Mull Tertiary igneous centre, Scotland, and confirmation of the existence of subchrons during Anomaly 26r. Earth Planet Sci. Lett., 193, 333–345.
    [Google Scholar]
  16. Cole, J.E. & Peachey, J. (1999) Evidence for pre‐Cretaceous rifting in the Rockall Trough: an analysis using quantitative plate tectonic modelling. In: Petroleum Geology of NW Europe: Proceedings of the 5th Conference (Ed. by A.J.Fleet & S.A.R.Boldy ), pp. 359–370. Geological Society, London.
    [Google Scholar]
  17. Corry, C.E. (1988) Laccoliths – Mechanics of emplacement and growth. Geol. Soc. Am. Special Paper, 220, 1–30.
     [Google Scholar]
  18. Dickin, A.P. (1981) Isotope geochemistry of Tertiary igneous rocks from the Isle of Skye, NW Scotland. J. Petrol., 22, 155–189.
    [Google Scholar]
  19. Dietrich, V.J. & Jones, E.J.W. (1980) Volcanic rocks from the Rosemary Bank (Rockall Trough, NE Atlantic). Mar. Geol., 35, 287–297.
    [Google Scholar]
  20. Dore, A.G., Lundin, E.R., Jensen, L.N., Birkeland, O., Eliassen, P.E. & Fichler, C. (1999) Principal tectonic events in the evolution of the northwest European Atlantic margin. In: Petroleum Geology of NW Europe: Proceedings of the 5th Conference (Ed. by A.J.Fleet & S.A.R.Boldy ), pp. 41–61. Geological Society, London.
    [Google Scholar]
  21. Dutrow, B.L., Travis, B.J., Gable, C.W. & Henry, D.J. (2001) Coupled heat and silica transport associated with dike intrusion into sedimentary rock: effects on isotherm location and permeability evolution. Geochim. Cosochim. Acta, 65, 3749–3767.
    [Google Scholar]
  22. Egerton, P.D. (1998) Seismic characterization of Paleogene depositional sequences: northeastern Rockall Trough. In: Geological Processes on Continental Margins: Sedimentation, Mass‐Wasting and Stability (Ed. by M.S.Stoker , D.Evans & A.Cramp ), Geol. Soc. Spec. Publ. , 129, 217–228.
    [Google Scholar]
  23. Eldholm, O. & Grue, K. (1994) North Atlantic volcanic margins: dimensions and production rates. J. Geophys. Res., 99, 2955–2968.
    [Google Scholar]
  24. Ellis, M. & King, G. (1991) Structural control of flank volcanism in continental rifts. Science, 254, 839–842.
    [Google Scholar]
  25. Emeleus, C.H. & Gyopari, M.C. (1992) British Tertiary Volcanic Province. Chapman & Hall, London.
    [Google Scholar]
  26. England, R.W. (1994) The structure of the Skye Lava Field. Scotl. J. Geol., 30, 33–37.
    [Google Scholar]
  27. England, R.W. & Hobbs, R.W. (1997) The structure of the Rockall Trough imaged by deep seismic reflection profiling. J. Geol. Soc. London, 154, 497–502.
     [Google Scholar]
  28. Fitton, J.G., Saunders, A.D., Norry, M.J., Hardarson, B.S. & Taylor, R. (1997) Thermal and chemical structure of the Iceland plume. Earth Planet. Sci. Lett., 153, 97–208.
     [Google Scholar]
  29. Foland, K.A., Gibb, F.G.F. & Henderson, C.M. (2000) Patterns of Nd‐ and Sr isotopic ratios produced by magmatic and post‐magmatic processes in the Shaint Islands Main Sill, Scotland. Contrib. Min. Petrol., 139, 655–671.
     [Google Scholar]
  30. Gamble, J.A., Wysoczanski, R.J. & Meighan, I.G. (1999) Constraints on the age of the British Tertiary Volcanic Province from ion microprobe U–Pb (SHRIMP) ages for acid igneous rocks from NE Ireland. J. Geol. Soc. London, 156, 291–299.
     [Google Scholar]
  31. George, S.C. (1992) Effect of igneous intrusion on the organic geochemistry of a siltstone and an oil shale horizon in the Midland Valley of Scotland. Org. Geochem., 18, 705–723.
    [Google Scholar]
  32. Giekie, A. (1880) The lava fields of North‐Western Europe. Nature, 23, 3–5.
    [Google Scholar]
  33. Harker, A. (1904) The Tertiary Igneous Rocks of Skye. Memoir of the Geological Survey, Scotland.
    [Google Scholar]
  34. Hirschmann, M.M., Renne, P.R. & McBirney, A.R. (1997) 40Ar/39Ar dating of the Skćrgaard intrusion. Earth Planet Sci. Lett., 146, 645–658.
    [Google Scholar]
  35. Hitchen, K. & Ritchie, J.D. (1993) New K–Ar ages and a provisional chronology, for the offshore part of the British Tertiary Igneous Province. Scotl. J. Geol., 29, 73–85.
    [Google Scholar]
  36. Holbrook, W.S., Larsen, H.C., Korenaga, J., Dahl‐Jensen, T., Reid, I.D., Kelemen, P.B., Hopper, J.R., Kent, G.M., Lizarralde, D., Bernstein, S. & Detrick, R.S. (2001) Mantle thermal structure and active upwelling during continental breakup in the North Atlantic. Earth Planet Sci. Lett., 190, 251–266.
    [Google Scholar]
  37. Hutton, A.C. & Henstridge, D.A. (1985) Pyrolysis of Tertiary oil shale by a dolerite intrusion, Stuart Deposit, Queensland, Australia. Fuel, 64, 546–552.
     [Google Scholar]
  38. Jackson, M.D. & Pollard, D.D. (1988) The laccolith‐stock controversy: new results from the southern Henry Mountains, Utah. Geol. Soc. Am. Bull., 100, 117–139.
    [Google Scholar]
  39. Jackson, M.D. & Pollard, D.D. (1990) Flexure and faulting of sedimentary host rocks during growth of igneous domes, Henry Mountains, Utah. J. Struct. Geol., 12, 185–206.
    [Google Scholar]
  40. Jacques, J.M. & Reavy, R.J. (1994) Caledonian plutonism and major lineaments in the SW Scottish Highlands. J. Geol. Soc. London, 151, 955–969.
     [Google Scholar]
  41. Johnson, A.M. & Pollard, D.D. (1973) Mechanics of growth of some laccolith intrusions in the Henry Mountains, Utah: I. Tectonophysics, 18, 261–309.
    [Google Scholar]
  42. Jolley, D.W. & Bell, B.R. (2002) The evolution of the North Atlantic Igneous Province and the opening of the NE Atlantic rift. In: The North Atlantic Igneous Province: Stratigraphy, Tectonic, Volcanic and Magmatic Processes (Ed. by D.W.Jolley & B.R.Bell ), Geol. Soc. Spec. Publ. , 197, 1–13.
    [Google Scholar]
  43. Jones, E.J., Ramsay, A.T.S., Preston, N.J. & Smith, A.C.S. (1974) A Cretaceous guyot in the Rockall Trough. Nature, 251, 129–131.
     [Google Scholar]
  44. Jones, J.G. & Nelson, P.H.H. (1970) The flow of basalt lava from air into water – its structural expression and stratigraphic significance. Geol. Mag., 107, 13–21.
    [Google Scholar]
  45. Kent, R.W. & Fitton, J.G. (2000) Mantle sources and melting dynamics of the British Palaeogene Igneous Province. J. Petrol., 41, 1023–1040.
    [Google Scholar]
  46. Klingelhöfer, F., Hort, M., Kümpel, H.‐J. & Schmincke, H.‐U. (1999) Constraints on the formation of submarine lava flows from numerical model calculations. J. Volcanol. Geotherm. Res., 92, 215–229.
    [Google Scholar]
  47. Knot, S.D., Burchell, M.T., Jolley, E.J. & Fraser, A.J. (1993) Mesozoic to Cenozoic plate reconstructions of the North Atlantic and hydrocarbon plays of the Atlantic margins. In: Petroleum Geology of NW Europe: Proceedings of the 4th Conference (Ed. by J.R.Parker ), 953–974. The Geological Society, London.
    [Google Scholar]
  48. Marsh, J.S. (1973) Relationships between transform directions and alkaline igneous rock lineaments in Africa and South America. Earth Planet Sci. Lett., 18, 317–323.
    [Google Scholar]
  49. McClay, K.R. (1995) Recent advances in analogue modelling: uses in section interpretation and validation. In: Modern Developments in Structural Interpretations, Validaltion and Modelling (Ed. by P.G.Buchanan & D.A. Nieuwland), Geol. Soc. Spec. Publ. , 99, 201–225.
    [Google Scholar]
  50. Morton, A.C. (1996) Petrographic study of the Early Tertiary volcanic succession in Well 154/3‐1, Rockall Trough. British Geological Survey Technical Report WH/96/253C.
  51. Morton, A.C., Dixon, J.E., Fitton, J.G., Macintyre, R.M., Smythe, D.K. & Taylor, P.N. (1988) Early Tertiary volcanic rocks in the Well 163/6‐1A, Rockall Trough. In: Early Tertiary Volcanism and the Opening of the NE Atlantic (Ed. by A.C.Morton & L.M.Parson ), Geol. Soc. Spec. Publ. , 39, 293–308.
    [Google Scholar]
  52. Morton, A.C., Hitchen, K., Ritchie, J.D., Hine, N.M., Whitehouse, M. & Carter, S.G. (1995) Late Cretaceous basalts from Rosemary Bank, Northern Rockall Trough. J. Geol. Soc. London, 152, 947–952.
     [Google Scholar]
  53. Mudge, D.C. & Jones, S.M. (2004) Palaeocene uplift and subsidence events in the Scotland–Shetland and North Sea region and their relationship to the Iceland Plume. J. Geol. Soc. London, 161, 381–386.
     [Google Scholar]
  54. Musgrove, F.W. & Mitchener, B. (1996) Analysis of the pre‐Tertiary rifting history of the Rockall Trough. Petrol. Geosci., 2, 353–360.
    [Google Scholar]
  55. Mussett, A.E. (1984) Time and duration of Tertiary igneous activity of Rhum and adjacent areas. Scotl. J. Geol., 20, 273–279.
    [Google Scholar]
  56. Mussett, A.E. (1986) 40Ar/39Ar step‐heating ages of the Tertiary igneous rocks of Mull, Scotland. J. Geol. Soc. London, 143, 887–896.
    [Google Scholar]
  57. Mussett, A.E., Dagley, P. & Skelhorn, R.R. (1988) Time and duration of activity in the British Tertiary Igneous Province. In: Early Tertiary Volcanism and the Opening of the NE Atlantic (Ed. by A.C.Morton & L.M.Parson ), Geol. Soc. Spec. Publ. , 39, 337–348.
    [Google Scholar]
  58. Nadin, P.A., Houchin, M.A. & Kuznir, N.J. (1999) Evidence for pre‐Cretaceous rifting in the Rockall Trough: an analysis using quantitative 2D structural/stratigraphic modelling. In: Petroleum Geology of NW Europe: Proceedings of the 5th Conference (Ed. by A.J.Fleet & S.A.R.Boldy ), 371–378. Geological Society, London.
    [Google Scholar]
  59. Nicholson, R. (1985) The intrusion and deformation of Tertiary minor sheet intrusions, West Suardal, Isle of Skye, Scotland. Geol. J., 20, 53–72.
    [Google Scholar]
  60. O'Connor, J.M., Stoffers, P., Wijbrans, J.R., Shannon, P.M. & Morrissey, T. (2000) Evidence from episodic seamount volcanism for pulsing of the Iceland plume in the past 70 Myr. Nature, 408, 954–958.
     [Google Scholar]
  61. Pearson, D.G., Emeleus, C.H. & Kelley, S.P. (1996) Precise 40Ar/39Ar age for the initiation of palaeogene volcanism in the Inner Hebrides and its regional significance. J. Geol. Soc. London, 153, 815–818.
    [Google Scholar]
  62. Planke, S. (1994) Geophysical response of flood basalts from analysis of wire line logs: Ocean Drilling Program Site 642, Voring volcanic margin. J. Geophys. Res., 99, 9279–9296.
    [Google Scholar]
  63. Planke, S., Symonds, P., Alvestad, E. & Skogseid, J. (2000) Seismic volcanostratigraphy of large‐volume basaltic intrusive complexes on rifted margins. J. Geophys. Res., 105, 19335–19351.
    [Google Scholar]
  64. Pollard, D.D. & Johnson, A.M. (1973) Mechanics of growth of some laccolith intrusions in the Henry Mountains, Utah: II. Tectonophysics, 18, 311–354.
    [Google Scholar]
  65. Raymond, A.C. & Murchison, D.G. (1988) Development of organic maturation in the thermal aureoles of sills and its relation to sediment compaction. Fuel, 67, 1599–1608.
    [Google Scholar]
  66. Richey, J.E. (1961) Scotland: The Tertiary Volcanic Districts, British Regional Geology. HMSO, London.
    [Google Scholar]
  67. Ritchie, J.D., Gatliff, R.W. & Richards, P.C. (1999) Early Tertiary magmatism in the offshore NW UK margin and surrounds. In: Petroleum Geology of NW Europe: Proceedings of the 5th Conference (Ed. by A.J.Fleet & S.A.R.Boldy ), 573–584. Geological Society, London.
    [Google Scholar]
  68. Roberts, D.G., Ginzberg, A., Nunn, K. & McQuillin, R. (1988) The structure of the Rockall Trough from seismic refraction and wide‐angle reflection measurements. Nature, 332, 632–635.
    [Google Scholar]
  69. Rocchi, S., Westerman, D.S., Dini, A., Innocenti, F. & Tonarini, S. (2002) Two‐stage growth of laccoliths at Elba Island, Italy. Geology, 30, 983–986.
    [Google Scholar]
  70. Rudnick, R.L. & Fountain, D.M. (1995) Nature and composition of the continental crust; a lower crustal perspective. Rev. Geophys., 33, 267–309.
    [Google Scholar]
  71. Saunders, A.D., Fitton, J.G., Kerr, A.C., Norry, M.J. & Kent, R.W. (1997) The North Atlantic Igneous Province. In: Large Igneous Provinces: Continental, Oceanic, and Planetary Volcanism (Ed. by J.J.Mahoney & M.F.Coffin ), Geophys. Monogr. , 100, 45–93.
    [Google Scholar]
  72. Scarrow, J.H., Curran, J.M. & Kerr, A.C. (2000) Major element record of variable plume involvement in North Atlantic Province Tertiary Flood basalts. J. Petrol., 41, 1155–1176.
    [Google Scholar]
  73. Sinton, C.W. & Duncan, R.A. (1998) 40Ar/39Ar ages of lavas from the southeast Greenland margin, ODP leg 152, DSDP leg 81. Proc. Ocean Drill. Prog. Sci. Res., 152, 387–402.
    [Google Scholar]
  74. Sinton, C.W., Hitchen, K. & Duncan, R.A. (1998) 40Ar/39Ar geochronology of silicic and basic volcanic rocks. Geol. Mag., 135, 161–170.
     [Google Scholar]
  75. Skelhorn, R.R., MacDougall, J.D.S. & Longland, P.J.N. (1969) The tertiary igneous geology of the Isle of Mull. Geol. Assoc. Guide, 20.
    [Google Scholar]
  76. Smallwood, J.R. & Maresh, J. (2002) The properties, morphology and distribution of igenous sills: modelling, borehole data and 3D seismic data from the Faeroe‐Shetland area. In: The North Atlantic Igneous Province: Stratigraphy, Tectonic, Volcanic and Magmatic Processes (Ed. by D.W.Jolley & B.R.Bell ), Geol. Soc. Spec. Publ. , 197, 271–306.
    [Google Scholar]
  77. Smythe, D.K. (1989) Rockall Trough – Cretaceous or Late Paleozoic?Scotl. J. Geol., 25, 5–43.
    [Google Scholar]
  78. Stein, A.M. (1988) Basement controls upon basin development in the Caledonian foreland, NW Scotland. Basin Res., 1, 107–119.
    [Google Scholar]
  79. Stein, A.M. & Blundell, D.J. (1990) Geological inheritance and crustal dynamics of the northwest Scottish continental shelf. Tectonophysics, 173, 455–467.
    [Google Scholar]
  80. Storey, M., Duncan, R.A., Pedersen, A.K., Larsen, L.M. & Larsen, H.C. (1998) 40Ar/39Ar geochronology of the West Greenland Tertiary volcanic province. Earth Planet Sci. Lett., 160, 569–586.
    [Google Scholar]
  81. Sun, S.S. & McDonough, W.F. (1989) Chemical and isotopic systematics of oceanic basalts; implications for mantle composition and processes. In: Magmatism in the Ocean Basins (Ed. by A.D.Saunders & M.J.Norry ), Geol. Soc. Spec. Publ. , 42, 313–345.
    [Google Scholar]
  82. Sykes, L.R. (1978) Intraplate seismicity, reactivation of preexisting zones of weakness, alkaline magmatism, and other tectonism postdating continental fragmentation. Rev. Geophys. Space Phys., 16, 621–688.
    [Google Scholar]
  83. Tantrigoda, D.A. (1988) Interpretation of magnetic anomalies over the Skye Tertiary intrusive complex. Scotl. J. Geol., 24, 215–221.
    [Google Scholar]
  84. Tate, M.P., Dodd, C.D. & Grant, N.T. (1999) The NE Rockall Basin and its significance in the evolution of the Rockall‐Faroes/East Greenland rift system. In: Petroleum Geology of NW Europe: Proceedings of the 5th Conference (Ed. by A.J.Fleet & S.A.R.Boldy ), 391–406. Geological Society, London.
    [Google Scholar]
  85. Tegner, C. & Duncan, R.A. (1999) 40Ar/39Ar chronology for the volcanic history of the southeast Greenland rifted margin LEG163. Proc. Ocean Dril. Prog. Sci. Res., 163, 53–62.
     [Google Scholar]
  86. Tegner, C., Duncan, R.A., Bernstein, S., Brooks, C.K., Bird, D.K. & Storey, M. (1998) 40Ar/39Ar geochronology of Tertiary mafic intrusions along the East Greenland rifted margin: relation to flood basalts and the Iceland hotspot track. Earth Planet Sci. Lett., 156, 75–88.
    [Google Scholar]
  87. Thompson, R.N. & Gibson, S.A. (1991) Subcontinental mantle plumes, hotspots and pre‐existing thinspots. J. Geol. Soc. London, 148, 973–977.
    [Google Scholar]
  88. Thompson, R.N. & Morrison, M.A. (1988) Asthenospheric and lower lithospheric mantle contributions to continental extensional magmatism, an example from the British Tertiary Province. Chem. Geol., 68, 1–15.
    [Google Scholar]
  89. Thomson, K. & Hutton, D. (2004) Geometry and growth of sill complexes: insights ising 3D seismic from the North Rockall Trough. Bull. Volcanol., 66, 364–375.
    [Google Scholar]
  90. Torsvik, T.H., Mosar, J. & Eide, E.A. (2001) Cretaceous – Tertiary geodynamics: a North Atlantic exercise. Geophys. J. Inter., 146, 850–866.
    [Google Scholar]
  91. Trude, J., Cartwright, J., Davies, R.J. & Smallwood, J. (2003) New technique for dating igneous sills. Geology, 31, 813–816.
    [Google Scholar]
  92. Upton, B.G.J., Emeleus, C.H., Rex, D.C. & Thirlwall, M.F. (1995) Early Tertiary magmatism in NE Greenland. J. Geol. Soc. London, 152, 959–964.
    [Google Scholar]
  93. Waagstein, R., Guise, P. & Rex, P. (2002) K/Ar and 40Ar/39Ar whole‐rock dating of zeolite facies metamorphosed flood basalts; the upper Palaeocene basalts of the Faroe Islands, NE Atlantic. In: The North Atlantic Igneous Province: Stratigraphy, Tectonic, Volcanic and Magmatic Processes (Ed. by D.W.Jolley & B.R.Bell ), Geol. Soc. Spec. Publ. , 197, 219–252.
    [Google Scholar]
  94. Waddams, P. & Cordingley, T. (1999) Regional Geology of the NE Rockall Basin. In: Petroleum Geology of NW Europe: Proceedings of the 5th Conference (Ed. by A.J.Fleet & S.A.R.Boldy ), 379–390. Geological Society, London.
    [Google Scholar]
  95. Walker, G.P.L. (1975) A new concept in the evolution of the British Tertiary Igneous centres. J. Geol. Soc. London, 131, 121–141.
     [Google Scholar]
  96. Walker, G.P.L. (1993) Re‐evaluation of inclined intrusive sheets and dykes in the Cuillins volcano, Isle of Skye. In: Magmatic Processes and Plate Tectonics (Ed. by H.M.Prichard , T.Alabaster , N.B.W.Harris & C.R.Neary ), Geol. Soc. Spec. Publ. , 76, 489–497.
    [Google Scholar]
  97. White, R.S. & McKenzie, D.P. (1989) Magmatism at rift zones: the generation of volcanic continental margins and flood basalts. J. Geophys. Res., 94, 7685–7729.
    [Google Scholar]
  98. White, R.S. & McKenzie, D.P. (1995) Mantle plumes and flood basalts. J. Geophys. Res., 100, 17543–17585.
    [Google Scholar]
  99. Williamson, I.T. & Bell, B R. (1994) The Palaeocene lava field of west‐central Skye, Scotland: stratigraphy, palaeogeography and structure. Trans. R. Soc. Edinburgh: Earth Sci., 85, 39–75.
     [Google Scholar]
  100. Wood, M.V., Hall, J. & Doody, J.J. (1988) Distribution of early tertiary lavas in the NE Rockall trough. In: Early Tertiary Volcanism and the Opening of the NE Atlantic (Ed. by A.C.Morton & L.M.Parson ), Geol. Soc. Spec. Publ. , 39, 283–292.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journals/10.1111/j.1365-2117.2005.00260.x
Loading
Palaeogene igneous rocks reveal new insights into the geodynamic evolution and petroleum potential of the Rockall Trough, NE Atlantic Margin
Basin Research 17, 171 (2005); https://doi.org/10.1111/j.1365-2117.2005.00260.x
/content/journals/10.1111/j.1365-2117.2005.00260.x
/content/journals/10.1111/j.1365-2117.2005.00260.x
Loading

Data & Media loading...

  • Article Type: Research Article

Most Cited This Month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error