Early Cenozoic saucer-shaped sills of the Faroe Islands: An example of intrusive styles in basaltic lava piles

Journal of the Geological Society

Volumn 168, Issue 1, 2011, Pages 159-178

  Hansen, J ^a   Jerram, D A ^a   McCaffrey, K ^a   Passey, S R ^b  

^a DURHAM UNIVERSITY   (United Kingdom)

^b Jardfeingi (Faroese Earth and Energy Directorate)   (Faroe Islands)

Author keywords

[No Author keywords available]

Indexed keywords

BASALTIC LAVA; CENOZOIC; CONTRIBUTING FACTOR; IGNEOUS ACTIVITY; LAVA FLOWS; LEAST PRINCIPAL STRESS; NORTH ATLANTIC IGNEOUS PROVINCE; SAUCER-SHAPED SILLS; SEDIMENTARY BASIN; VOLCANICLASTICS;

PILES;

BASALT; CENOZOIC; DIKE; GEOMETRY; IGNEOUS INTRUSION; IGNEOUS PROVINCE; LAVA FLOW; LITHOLOGY; SEDIMENTARY BASIN; SILL;

FAROE ISLANDS;

EID: 84860390280     PISSN: 00167649     EISSN: None     Source Type: Journal    
DOI: 10.1144/0016-76492010-012     Document Type: Article

References (70)

1. Abrahamsen, N. 2006. Palaeomagnetic results from the Lopra-1/1A re-entry well, Faroe Islands. Geological Survey of Denmark and Greenland Bulletin, 9, 51-65.
2. Baer, G. 1991. Mechanisms of dike propagation in layered rocks and in massive, porous sedimentary rocks. Journal of Geophysical Research, 96, 11911-11929.
3. Baer, G., Beyth, M. & Reches, Z. 1994. Dikes emplaced into fractured basement, Timna Igneous Complex, Israel. Journal of Geophysical Research, 99, 24039-24050.
4. Bell, B. & Butcher, H. 2002. On the emplacement of sill complexes: evidence from the Faroe-Shetland Basin. In: Jolley, D.W. & Bell, B.R. (eds) The North Atlantic Igneous Province: Stratigraphy, Tectonic, Volcanic and Magmatic Processes. Geological Society, London, Special Publications, 197, 307-329.
5. Boldreel, L.O. & Andersen, M.S. 1998. Tertiary compressional structures on the Faroe-Rockall Plateau in relation to northeast Atlantic ridge-push and Alpine foreland stresses. Tectonophysics, 300, 13-28.
6. Bott, M.H.P., Sunderland, J., Smith, P.J., Casten, U. & Saxov, S. 1974. Evidence for continental crust beneath the Faeroe Islands. Nature, 248, 202-204.
7. Bradley, J. 1965. Intrusion of major dolerite sills. Transactions of the Royal Society of New Zealand, Geology, 3, 27-55.
8. Burchardt, S. 2008. New insights into the mechanics of sill emplacement provided by field observations of the Njardvik Sill, Northeast Iceland. Journal of Volcanology and Geothermal Research, 173, 280-288.
9. Cartwright, J. & Hansen, D.M. 2006. Magma transport through the crust via interconnected sill complexes. Geology, 34, 929-932.
10. Chevallier, L. & Woodford, A. 1999. Morpho-tectonics and mechanism of emplacement of the dolerite rings and sills of the western Karoo, South Africa. South African Journal of Geology, 102, 43-54.
11. Cox, K.G. 1980. A model for flood basalt vulcanism. Journal of Petrology, 21, 629-650.
12. Delaney, P.T., Pollard, D.D., Ziony, J.I. & McKee, E.H. 1986. Field relations between dikes and joints: emplacement processes and paleostress analysis. Journal of Geophysical Research, 91, 4920-4938.
13. Eldholm, O. & Grue, K. 1994. North Atlantic volcanic margins: Dimensions and production rates. Journal of Geophysical Research, 99, 2955-2968.
14. Ellis, D., Passey, S.R., Jolley, D.W. & Bell, B.R. 2009. Transfer zones: The application of new geological information from the Faroe Islands applied to the offshore exploration of intra-basalt and sub-basalt exploration. In: Varming, T. & Ziska, H. (eds) Faroe Islands Exploration Conference: Proceedings of the 2nd Conference. Annales Societatis Scientiarum Færoensis, Tórshavn, 50, 205-226.
15. Ernst, R.E., Buchan, K.L. & Campbell, I.H. 2005. Frontiers in large igneous province research. Lithos, 79, 271-297.
16. Francis, E.H. 1982. Magma and sediment-I. Emplacement mechanism of late Carboniferous tholeiitic sills in northern Britain. Journal of the Geological Society, London, 139, 1-20.
17. Fyfe, W.S., Price, N.J. & Thompson, A.B. 1978. Fluids in the Earth's Crust. Elsevier, Amsterdam.
18. Galerne, C.Y., Neumann, E.-R. & Planke, S. 2008. Emplacement mechanisms of sill complexes: Information from the geochemical architecture of the Golden Valley Sill Complex, South Africa. Journal of Volcanology and Geothermal Research, 177, 425-440.
19. Galland, O., D'Ars, J.D.B., Cobbold, P.R. & Hallot, E. 2003. Physical models of magmatic intrusion during thrusting. Terra Nova, 15, 405-409.
20. Galland, O., Cobbold, P.R., Hallot, E., D'Ars, J.D.B. & Delavaud, G. 2006. Use of vegetable oil and silica powder for scale modelling of magmatic intrusion in a deforming brittle crust. Earth and Planetary Science Letters, 243, 786-804.
21. Geoffroy, L., Bergerat, F. & Angelier, J. 1994. Tectonic evolution of the Greenland-Scotland ridge during the Paleogene: new constraints. Geology, 22, 653-656.
22. Gibb, F. G. F. & Henderson, C.M.B. 2006. Chemistry of the Shiant Isles Main Sill, NW Scotland, and wider implications for the petrogenesis of mafic sills. Journal of Petrology, 47, 191-230.
23. Goulty, N.R. 2005. Emplacement mechanism of the Great Whin and Midland Valley dolerite sills. Journal of the Geological Society, London, 162, 1047-1056.
24. Goulty, N.R. & Schofield, N. 2008. Implications of simple flexure theory for the formation of saucer-shaped sills. Journal of Structural Geology, 30, 812-817.
25. Gudmundsson, A. 1986. Formation of crustal magma chambers in Iceland. Geology, 14, 164-166.
26. Gudmundsson, A. & Marinoni, L.B. 1999. Geometry, emplacement, and arrest of dykes. Annales Tectonicæ, XIII, 71-92.
27. Hald, N. & Waagstein, R. 1991. The dykes and sills of the Early Tertiary Faeroe Island basalt plateau. Transactions of the Royal Society of Edinburgh: Earth Sciences, 82, 373-388.
28. Hall, A. 1996. Igneous Petrology, 2nd edn. Longman, Harlow.
29. Hansen, D.M. 2006. The morphology of intrusion-related vent structures and their implications for constraining the timing of intrusive events along the NE Atlantic margin. Journal of the Geological Society, London, 173, 789-800.
30. Hansen, D.M. & Cartwright, J. 2006. Saucer-shaped sill with lobate morphology revealed by 3D seismic data: implications for resolving a shallow-level sill emplacement mechanism. Journal of the Geological Society, London, 163, 509-523.
31. Hansen, D.M., Cartwright, J.A. & Thomas, D. 2004. 3D seismic analysis of the geometry of igneous sills and sill junction relationships. In: Davies, R.J., Cartwright, J.A., Stewart, S.A., Lappin, M. & Underhill, J.R. (eds) 3D Seismic Technology: Application to the Exploration of Sedimentary Basins. Geological Society, London, Memoirs, 29, 199-208.
32. Hansen, J., Jerram, D.A., McCaffrey, K. & Passey, S.R. 2009. The onset of the North Atlantic Igneous Province in a rifting perspective. Geological Magazine, 146, 309-325.
33. Hatcher, R.D. 1995. Structural Geology, Principles, Concepts, and Problems. Prentice Hall, Englewood Cliffs, NJ.
34. Jerram, D.A. & Widdowson, M. 2005. The anatomy of continental flood basalt provinces: geological constraints on the processes and products of flood volcanism. Lithos, 79, 385-405.
35. Jerram, D.A., Single, R.T., Hobbs, R.W. & Nelson, C.E. 2009. Understanding the offshore flood basalt sequence using onshore volcanic facies analogues: an example from the Faroe-Shetland basin. Geological Magazine, 146, 353-367.
36. Jørgensen, O. 2006. The regional distribution of zeolites in the basalts of the Faroe Islands and the significance of zeolites as palaeotemperature indicators. Geological Survey of Denmark and Greenland Bulletin, 9, 123-156.
37. Kavanagh, J.L., Menand, T. & Sparks, R.S.J. 2006. An experimental investigation of sill formation and propagation in layered elastic media. Earth and Planetary Science Letters, 245, 799-813.
38. Larsen, H.C. & Marcussen, C. 1992. Sill-intrusion, flood basalt emplacement and deep crustal structure of the Scoresby Sund region, East Greenland. In: Storey, B.C., Alabaster, T. & Pankhurst, R.J. (eds) Magmatism and the Causes of Continental Break-up. Geological Society, London, Special Publications, 68, 365-386.
39. Lister, J.R. & Kerr, R.C. 1991. Fluid-mechanical models of crack propagation and their application to magma transport in dykes. Journal of Geophysical Research, 96, 10049-10077.
40. Maaløe, S. 2003. Melt dynamics of a partially molten mantle with randomly oriented veins. Journal of Petrology, 44, 1193-1210.
41. Malthe-Sørenssen, A., Planke, S., Svensen, H. & Jamtveit, B. 2004. Formation of saucer-shaped sills. In: Breitkreuz, C. & Petford, N. (eds) Physical Geology of High-Level Magmatic Systems. Geological Society, London, Special Publications, 234, 215-227.
42. Menand, T. & Tait, S.R. 2002. The propagation of a buoyant liquid-filled fissure from a source under constant pressure: An experimental approach. Journal of Geophysical Research, 107, 2306, ECV 16.1-ECV 16.14.
43. Meyer, R., Van Wijk, J. & Gernigon, L. 2007. The North Atlantic Igneous Province: A review of models for its formation. In: Foulger, G.R. & Jurdy, D.M. (eds) Plates, Plumes, and Planetary Processes. Geological Society of America, Special Papers, 430, 525-552.
44. Morgan, J.P. 1997. The generation of a compositional lithosphere by mid-ocean ridge melting and its effect on subsequent off-axis hotspot upwelling and melting. Earth and Planetary Science Letters, 146, 213-232.
45. Motoki, A. & Sichel, S.E. 2008. Hydraulic fracturing as a possible mechanism of dyke-sill transitions and horizontal discordant intrusions in trachytic tabular bodies of Arraial do Cabo, State of Rio de Janeiro, Brazil. Geofisica Internacional, 47, 13-25.
46. Noe-Nygaard, A. & Rasmussen, J. 1968. Petrology of a 3,000 metre sequence of basaltic lavas in the Faeroe Islands. Lithos, 1, 286-304.
47. Ohanian, H.C. 1989. Physics, 2nd edn. Norton, New York.
48. Passey, S.R. & Bell, B.R. 2007. Morphologies and emplacement mechanisms of the lava flows of the Faroe Islands Basalt Group, Faroe Islands, NE Atlantic Ocean. Bulletin of Volcanology, 70, 139-156.
49. Passey, S.R. & Jolley, D.W. 2009. A revised lithostratigraphic nomenclature for the Palaeogene Faroe Islands Basalt group, NE Atlantic Ocean. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 99, 127-158.
50. Pollard, D.D. 1973. Derivation and evaluation of a mechanical model for sheet intrusions. Tectonophysics, 19, 233-269.
51. Polteau, S., Mazzini, A., Galland, O., Planke, S. & Malthe-Sørenssen, A. 2008. Saucer-shaped intrusions: Occurrences, emplacement and implications. Earth and Planetary Science Letters, 266, 195-204.
52. Raddick, M.J., Parmentier, E.M. & Scheirer, D.S. 2002. Buoyant decompression melting: a possible mechanism for intraplate volcanism. Journal of Geophysical Research, 107, ECV 7.1-ECV 7.14.
53. Rasmussen, J. & Noe-Nygaard, A. 1969. Description to geological map of the Faroe Islands at the scale 1:50 000 [in Danish]. Geological Survey of Denmark 1. Series No. 24.
54. Rasmussen, J. & Noe-Nygaard, A. 1970. Geology of the Faeroe Islands. Geological Survey of Denmark Series I, 25.
55. Richardson, K.R., Smallwood, J.R., White, R.S., Snyder, D.B. & Maguire, P.K.H. 1998. Crustal structure beneath the Faroe Islands and the Faroe- Iceland Ridge. Tectonophysics, 300, 159-180.
56. Rubin, A.M. 1995. Propagation of magma-filled cracks. Annual Review of Earth and Planetary Sciences, 23, 287-336.
57. Saunders, A.D., Fitton, J.G., Kerr, A.C., Norry, M.J. & Kent, R.W. 1997. The North Atlantic Igneous Province. In: Mahoney, J.J. & Coffin, M.F. (eds) Large Igneous Provinces: Continental, Oceanic, and Planetary Flood Volcanism. Geophysical Monograph, American Geophysical Union, 100, 45-93.
58. Schultz, R.A., Okubo, C.H. & Wilkins, S.J. 2006. Displacement-length scaling relations for faults on terrestrial planets. Journal of Structural Geology, 28, 2182-2193.
59. 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 and Planetary Science Letters, 160, 569-586.
60. Storey, M., Duncan, R.A. & Tegner, C. 2007. Timing and duration of volcanism in the North Atlantic Igneous Province: implications for geodynamics and links to the Iceland hotspot. Chemical Geology, 241, 264-281.
61. Thompson, R.N., Riches, A.J.V., et al. 2007. Origin of CFB magmatism: Multitiered intracrustal picrite-rhyolite magmatic plumbing at Pitzkoppe, Western Namibia, during Early Cretaceous Etendeka magmatism. Journal of Petrology, 48, 1119-1154.
62. Thomson, K. 2004. Sill complex geometry and internal architecture: a 3D seismic perspective. In: Breitkreuz, C. & Petford, N. (eds) Physical Geology of High-level Magmatic Systems. Geological Society, London, Special Publications, 234, 229-232.
63. Thomson, K. 2007. Determining magma flow in sills, dykes and laccoliths and their implications for sill emplacement mechanisms. Bulletin of Volcanology, 70, 183-201.
64. Thomson, K. & Hutton, D. 2004. Geometry and growth of sill complexes: insights using 3D seismic from the North Rockall Trough. Bulletin of Volcanology, 66, 364-375.
65. Upton, B.G.J. 1988. History of Tertiary igneous activity in the N Atlantic borderlands. In: Morton, A.C. & Parson, L.M. (eds) Early Tertiary Volcanism and the Opening of the NE Atlantic. Geological Society, London, Special Publications, 39, 429-453.
66. Valentine, G.A. & Krogh, K.E.C. 2006. Emplacement of shallow dikes and sills beneath a small basaltic volcanic center-The role of pre-existing structure (Paiute Ridge, southern Nevada, USA). Earth and Planetary Science Letters, 246, 217-230.
67. Varga, R.J., Gee, J.S., Staudigel, H. & Tauxe, L. 1998. Dike surface lineations as magma flow indicators within the sheeted dike complex of the Troodos Ophiolite, Cyprus. Journal of Geophysical Research, 103, 5241-5256.
68. Waagstein, R. 1988. Structure, composition and age of the Faeroe basalt plateau. In: Morton, A.C. & Parson, L.M. (eds) Early Tertiary Volcanism and the Opening of the NE Atlantic. Geological Society, London, Special Publications, 39, 225-238.
69. 40Ar whole-rock dating of zeolite facies metamorphosed flood basalts: the upper Paleocene basalts of the Faroe Islands, NE Atlantic. In: Jolley, D.W. & Bell, B.R. (eds) The North Atlantic Igneous Province: Stratigraphy, Tectonic, Volcanic and Magmatic Processes. Geological Society, London, Special Publications, 197, 219-252.
70. Walker, G.P.L. 1992. 'Coherent intrusion complexes' in large basaltic volcanoes- a new structural model. Journal of Volcanology and Geothermal Research, 50, 41-54.