1887
Volume 67, Issue 8
  • E-ISSN: 1365-2478

Abstract

ABSTRACT

Early attempts to utilize magnetic data to understand the volcanic and subvolcanic succession on the Faroese Continental Shelf have shown that conventional interpretation and modelling of magnetic data from this area leads to ambiguous results. Interpretation of the aeromagnetic data on the Faroese Continental Shelf shows that some previously identified basement highs coincide with reduced‐to‐pole magnetic highs, whereas others coincide with negative or mixed magnetic features. Similarly, igneous centres are characterized by different polarity magnetic anomalies. Palaeomagnetic analysis of the onshore volcanic succession has demonstrated that the thermoremanent magnetization of the basaltic lavas is stronger than the induced magnetism, and both reversely and normally magnetized units are present. We have tested this with 2½D profile modelling using the palaeomagnetic information to correlate high‐amplitude magnetic anomalies with basalt successions containing changes in magnetic polarity. This approach has enabled us to map the termination of the differently magnetized units offshore and thereby extend the mapping of the Faroe Island Basalt Group on the Faroese Platform and into adjacent areas.

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References

  1. AbrahamsenN.1967. Some paleomagnetic investigations in the Faroe Islands. Bulletin of the Geological Society of Denmark17, 371–384.
    [Google Scholar]
  2. AbrahamsenN.2006. Palaeomagnetic results from the Lopra‐1/1A re‐entry well, Faroe Islands. In: Scientific Results from the Deepened Lopra‐1 Borehole, Faroe Islands, Vol. 9 (eds J.A.Chalmers and R.Waagstein), pp. 51–65. Geological Survey of Denmark and Greenland, Copenhagen.
    [Google Scholar]
  3. AbrahamsenN., SchoenhartingG., and HeinesenM.V.1984. Palaeomagnetism of the Vestmanna core and magnetic age and evolution of the Faeroe Islands. In: The deep drilling project 1980–1981 in the Faeroe Islands, Vol. Supplementum IX. (eds O.Bertelsen, A.Noe‐Nygaard and J.Rasmussen), pp. 93–108. Føroya Fróðskaparfelag, Torshavn.
    [Google Scholar]
  4. AbrahamsenN. and WaagsteinR.2006. Magnetic logs from the Lopra‐1/1A and Vestmanna‐1 wells, Faroe Islands. In: Scientific results from the deepened Lopra‐1 borehole, Faroe Islands, Vol. 9 (eds J.A.Chalmers and R.Waagstein), pp. 41–49. Geological Survey of Denmark and Greenland, Copenhagen.
    [Google Scholar]
  5. ÁrtingU. and RiishuusM.S.2017. Volcanic development of the Faroe Shetland Basin during the Paleogene. Faroese Geological Survey 2017 – report no 12, pp. 36.
  6. BoldreelL.O. and AndersenM.S.1993. Late Paleocene to Miocene compression in the Faeroe‐Rockall area. In: Petroleum Geology of Northwest Europe: Proceedings of the 4th Conference (ed. J. R. Parker), pp. 1025–1034. Geological Society, London.
  7. ClarkD.A.2014. Methods for determining remanent and total magnetisations of magnetic sources—a review. Exploration Geophysics45, 34.
    [Google Scholar]
  8. DeanK., McLachlanK. and ChambersA.1999. Rifting and the development of the Faroe‐Shetland Basin. In: Petroleum Geology of Northwest Europe: Proceedings of the 5th Conference, Vol. 1 (eds A.J. Fleet and S.A.R. Boldy), pp. 533–544. Geological Society, London.
  9. DoréA.G., LundinE.R., JensenL.N., BirkelandØ., EliassenP.E. and FichlerC.1999. Principal tectonic events in the evolution of the northwest European Atlantic margin. In: Petroleum Geology of Northwest Europe: Proceedings of the 5th Conference (eds A.J. Fleet and S.A.R. Boldy), pp. 41–61. Geological Society, London.
  10. FossC. and McKenzieB.2011. Inversion of anomalies due to remanent magnetisation: an example from the Black Hill Norite of South Australia. Australian Journal of Earth Sciences58, 14.
    [Google Scholar]
  11. GradsteinF.M., OggJ.G., SchmitzM. and OggG.2012. The Geological Time Scale 2012. Elsevier, Amsterdam.
    [Google Scholar]
  12. GrahamJ.W.1949. The stability and significance of magnetism in sedimentary rocks. Journal of Geophysical Research54, 37.
    [Google Scholar]
  13. HansenK.O. and SøndergårdV.H.1973. In situ determinations and statistical analysis of magnetic susceptibilities of Basalts of the Faroe Islands. Fróðskaparrit (Annales societatis scientiarum Færoensis)21, 34–49.
    [Google Scholar]
  14. HinzeW., vonFreseR.R.B. and SaadA.H.2013. Gravity and Magnetic Exploration, Principles, Practices and Applications. Cambridge University Press.
    [Google Scholar]
  15. JolleyD.W.2009. Palynofloral evidence for the onset and cessation of eruption of the Faroe Islands lava field. In: Faroe Islands Exploration Conference‐–Proceedings of the Second Conference (eds T. Varming and H. Ziska), pp. 156–173. Føroya Fróðskaparfelag, Tórshavn.
  16. JolleyD.W. and BellB.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, Vol. 197 (eds D.W.Jolley and B.R.Bell), pp. 1–13. Geological Society, Special Publications, London.
    [Google Scholar]
  17. KlingelhoferF., EdvardsR.A. and HobbsR.W.2005. Crustal structure of the NE Rockall Through from wide‐angle seismic data modelling. Journal of Geophysical Research110, 25.
    [Google Scholar]
  18. LarsenL.M., WaagsteinR., PedersenA.K. and StoreyM.1999. Trans‐Atlantic correlation of the Paleogene volcanic successions in the Faroe Islands and East Greenland. Journal of the Geological Society, London156, 1081–1095.
    [Google Scholar]
  19. LundinE.R. and DoréA.G.2005. NE Atlantic break‐up: a re‐examination of the Iceland mantle plume model and the Atlantic–Arctic linkage. In: Petroleum Geology: North‐West Europe and Global Perspectives—Proceedings of the 6th Petroleum Geology Conference, Vol. 1 (eds A. G. Doré and B. A. Vining) pp. 739–754. Geological Society, London.
  20. MorganR. and MurphyC.1998. The use of potential fields in the search for potential fields in the Faroe‐Shetland area. SPE Reservoir Evaluation & Engineering1, 476–484.
    [Google Scholar]
  21. MorrisB., UgaldeH. and ThomsonV.2007. Magnetic remancence constraints on magnetic inversion models. The Leading Edge26, 5.
    [Google Scholar]
  22. NabighianM.N., GrauchV.J.S., HansenR.O., LaFehrT.R., LiY., PeirceJ.W.et al. 2005. The historical development of the magnetic method in exploration. Geophysics70, 33ND–61ND.
    [Google Scholar]
  23. NielsenP.H.1977. A marine geophysical project, Magnetic measurements. Fróðskaparrit (Annales societatis scientiarum Færoensis)25, 95–100.
    [Google Scholar]
  24. OrangeA., SchofieldJ.D. and PeaceD.G.2002. Marine magnetotelluric Survey Faroes Shelf. Licences 005 and 006 North Atlantic Ocean. AOA Geophysics INC, Houston, TX.
  25. PasseyS.R.2009. Recognition of faulted basalt lava flow sequence through the correlation of stratigraphic marker units, Skopunarfjørður, Faroe Islands. In: Faroe Islands Exploration Conference ‐ Proceedings of the 2nd Conference (eds T. Varming and H. Ziska), pp. 174–204. Jarðfeingi, Tórshavn.
  26. PasseyS.R. and JolleyD.W.2009. A revised lithostratigraphic nomenclature for Palaeogene Faroe Islands Basalt Group, NE Atlantic Ocean. Earth and Environmental Science Transactions of the Royal Society of Edinburgh99, 127–158.
    [Google Scholar]
  27. PasseyS.R. and VarmingT.2010. Surface interpolation within a continental flood basalt province: an example from the Palaeogene Faroe Islands Basalt Group. Journal of Structural Geology32, 14.
    [Google Scholar]
  28. PowellD.W.1970. Magnetised rocks within the Lewisian of Western Scotland under the Southern Uplands. Scottish Journal of Geology6, 353–369.
    [Google Scholar]
  29. PrattD.A., McKenzieK.B. and WhiteT.S., 2014. Remote remanence estimation. Exploration Geophysics45, 10.
    [Google Scholar]
  30. RasmussenJ. and Noe‐NygaardA., 1969. Beskrivelse til Geologisk Kort over Færøerne i målestok 1:50.000. C. A. Reitzels Forlag (Jørgen Sandal), Geological Survey of Denmark I, Copenhagen.
  31. RaumT., MjeldeR., BergeA.M., PaulsenJ.T., DigranesP., ShimamuraH.et al., 2005. Sub‐basalt structures east of the Faroe Islands revealed from wide‐angle seismic and gravity data. Petroleum Geoscience11, 291–308.
    [Google Scholar]
  32. ReidA.1980. Aeromagnetic survey design. Geophysics45, 4.
    [Google Scholar]
  33. RichardsonK.R., WhiteR.S., EnglandR.W. and FruehnJ.1999. Crustal structure east of the Faroe Islands: mapping sub‐basalt sediments using wide‐angle seismic data. Petroleum Geoscience5, 161–172.
    [Google Scholar]
  34. RiisagerP., RiisagerJ., AbrahamsenN. and WaagsteinR.2002a. New paleomagnetic pole and magnetostratigraphy of Faroe Islands flood volcanics, North Atlantic igneous province. Earth and Planetary Science Letters, Elsevier Science201, 261–276.
    [Google Scholar]
  35. RiisagerP., RiisagerJ., AbrahamsenN. and WaagsteinR.2002b. Thellier palaeointensity experiments of Faroes flood basalts: technical aspects and geomagnetic implications. Physics of the Earth and Planetary Interiors131, 91–100.
    [Google Scholar]
  36. RitchieJ.D., JohnsonH. and KimbellG.S.2003. The nature and age of Cenozoic contractional deformatin within the NE Faroe‐Shetland Basin. Marine and Petroleum Geology20, 11.
    [Google Scholar]
  37. RitchieD., ZiskaH., KimbellG., QuinnM. and ChadwickA.2011. Geology of the Faroe‐Shetland Basin and Adjacent Areas (eds D.Ritchie, H.Ziska, H.Johnson, and D.Evans), pp. 9–70. Keyworth and Tórshavn, British Geological Survey and Jarðfeingi.
  38. RumphB., ReavesC.M., OrangeV.G. and RobinsonD.L.1993. Structuring and transfer zones in the Faeroe Basin in a tectonic context. In: Petroleum Geology of Northwest Europe: Proceedings of the 4th Conference, Vol. 2 (ed. J.R. Parker), pp. 999–1009. Geological Society, London.
  39. SaundersA.D., FittonJ.G., KerrA.C., NorryM.J. and KentR.W.1997. The North Atlantic igneous province. In: Large Igneous Provinces (eds J.J.Mahoney and M.F.Coffine), pp. 45–93. American Geophysical Union, Washington.
    [Google Scholar]
  40. SaxovS.1971. Færøerne, geofysisk belyst. Dansk geologisk forening, årsskrift for 1970, pp. 39–46. Dansk geologisk forening, Copenhage.
  41. SaxovS. and AbrahamsenN.1966. Some geophysical investigations in the Faroe Islands: a preliminary report. Zeitschrift fur Geophysik32, 455–471.
    [Google Scholar]
  42. SchoenhartingG. and AbrahamsenN.1984. Magnetic investigations on cores from the Lopra‐1 drillhole, Faeroe Islands. In O.Berthelsen, A.Noe‐Nygaard and J.Rasmussen, eds., The deep drilling project 1980–1981 in the Faeroe Islands, Supplementum IX: Torshavn, Føroyar Fróðskaparfelag, pp. 109–114.
    [Google Scholar]
  43. SchrøderN.F.1971. Magnetic anomalies around the Faroe Islands. Fróðskaparrit (Annales societatis scientiarum Færoensis)19, 20–29.
    [Google Scholar]
  44. SmallwoodJ.R.2005. Quantity, distribution and provenance of Paleocene sediments in the Faroe‐Shetland Area. In: Faroe Islands Exploration Conference Proceedings of the 1st Conference (eds H. Ziska, T. Varming and D. Block), pp. 82–95. Føroya Fróðskaparsetu, Tórshavn.
  45. SmallwoodJ.R., TownsM.J. and WhiteR.S.2001. The structure of the Faeroe‐Shetland Trough from integrated deep seismic and potential field modelling. Journal of the Geological Society, London158, 409–412.
    [Google Scholar]
  46. Statoil2015. Faroes Exploration License 006: Remaining Hydrocarbon Potential: Statoil.
  47. StoreyM., DuncanR.A. and TegnerC.2007. Timing and duration of volcanism in the North Atlantic Igneous Province: implications for geodynamics and links to the Iceland hotspot. Chemical Geology241, 264–281.
    [Google Scholar]
  48. SweetmanS.1997. The Integration of seismic interpretations with gravity and magnetic 2‐D modeling—an example from the offshore Faroes area. The Leading Edge16, 1–88.
    [Google Scholar]
  49. Tarling, 1970. Palaeomagnetic results from the Faeroe Islands. In: Palaeogeophysics (ed. S.D.Runcorn), pp. 193–208. Academic Press, London.
    [Google Scholar]
  50. TateM.P., DoddC.D. and GrantN.T.1999. The northeast Rockall Basin and its significance in the evolution of the Rockall‐Faeroes/East Greenland rift system. In: Petroleum Geology of Northwest Europe: Proceedings of the 5th Conference, Vol. 1 (eds A.J. Fleet and S.A.R. Boldy), pp. 391–406. Geological Society, London.
  51. TelfordW.M., GeldardL.P. and SheriffR.E.1990. Applied Geophysics Second Edition. Cambridge University Press, Cambridge.
    [Google Scholar]
  52. VarmingT.2009. Results from the drilling of the 1st license round wells in the Faroese part of the Judd Basin. In: Faroe Islands Exploration Conference ‐ Proceedings of the 2nd Conference (eds T. Varming and,H. Ziska), pp. 346–363. Jarðfeingi, Tórshavn.
  53. WaddamsP. and CordingleyT.1999. The regional geology and exploration potential of the NE Rockall Basin. In: Petroleum Geology of Northwest Europe: Proceedings of the 5th Conference, Vol. 1 (edsA. J. Fleet and S.A.R. Boldy), pp. 379–390. Geological Society, London.
  54. WaagsteinR.1988. Structure, composition and age of the Faeroe basalt plateau. In: Early Tertiary Volcanism and the Opening of the NE Atlantic, Vol. 39 (eds A.C.Morton and L.M.Parson), pp. 225–238. Geological Society, Special Publications, London.
    [Google Scholar]
  55. WaagsteinR., GuiseP. and RexD.2002. K/Ar and 39Ar/40Ar whole‐rock dating of zeolite facies metamorphosed flood basalts: the upper Paleocene basalt of the Faroe Islands, NE Atlantic. In: The North Atlantic Igneous Province: Stratigraphy, Tectonic, Volcanic and Magmatic Processes, Vol. 197 (eds D.W.Jolley and B.R.Bell), pp. 219–252. Geological Society, Special Publication, London.
    [Google Scholar]
  56. ZiskaH.2012. Fracture orientations onshore Faroe Islands (North Atlantic); evidence for dual rifting episodes in the Palaeogene. In: Faroe Islands Exploration Conference; Proceedings of the 3rd Conference (eds T. Varming and H. Ziska), pp. 41–58. Fróðskapur, Tórshavn.
  57. ZiskaH. and AndersenC.2005. Exploration opportunities in the Faroe Islands. In: Faroe Islands Exploration Conference Proceedings of the 1st Conference (eds H. Ziska, T. Varming and D. Block), pp. 146–162. Føroya Fróðskaparsetur, Tórshavn.
  58. ZiskaH. and MorganR.2005. Can Paleomagnetism be used as a mapping tool in basalt provinces?Proceedings EAGE 67th Conference & Exhibition, Madrid, Spain, June 13–16, 2005. EAGE.
  59. ZiskaH. and VarmingT.2008. Palaeogene evolution of the Ymir and Wyville–Thomson Ridges, European North Atlantic margin. In:The Nature and Origin of Compression in Passive Margins (eds H.Johnson, A.G.Doré, R.W.Gatliff, R.E.Holdsworth, E.R.Lundin and J.D.Ritchie), pp. 153–168. Geological Society, Special Publication, London.
    [Google Scholar]
  60. ØregaardJ., RoksvaagP., KirkemoE.G., LefdalF., HunnesO., FlatebøT. and HaugenJ.E.2007. Final Well Report, Well: FO 6104/21‐1. License no: 006, Brugdan.
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  • Article Type: Research Article
Keyword(s): Magnetics; Modelling; NRM; Seismic

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