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  • E-mailThilo.Wrona@uib.no
  • Phone+47 55 58 81 10
  • Visitor Address
    Realfagbygget, Allégt. 41
  • Postal Address
    Postboks 7803
    5020 Bergen

Basement structures and Permo-Triassic rifting in the northern North Sea

Our understanding of normal fault growth in rifts has, in large parts, been derived from observational studies looking at single rift phases or numerical models simulating the extension of homogeneous crust. In nature, many rifts, including the northern North Sea, developed in heterogeneous crust during multiple phases of extension. My research therefore aims to understand the basement geology and its impact on later stage rifting in the northern North Sea using newly-acquired 3-D seismic reflection data.

The new seismic data is by far superior to previous data sets in terms of quality, coverage and imaging depth, thus allowing us to obtain consistent, basin-wide interpretations of the rift and basement. These interpretations will help us study the effect of basement structures, such as shear zones, on Permo-Triassic and Jurassic rifting in great detail. As a result, this research has the potential to turn the northern North Sea into a prime example for multiphase rifting on top of a structurally heterogeneous orogenic basement. Understanding the evolution and architecture of the northern North Sea is important, as we look beyond conventional exploration models in search for hydrocarbon accumulations in stratigraphic and structural settings that have received less attention to date.

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Journal articles
  • Wrona, Thilo; Magee, Craig; Fossen, Haakon; Gawthorpe, Rob; Bell, Rebecca E.; Jackson, Christopher Aiden Lee; Faleide, Jan Inge. 2019. 3-D seismic images of an extensive igneous sill in the lower crust. Geology. 47: 729-733. doi: 10.1130/G46150.1
  • Wrona, Thilo; Pan, Indranil; Gawthorpe, Rob; Fossen, Haakon. 2018. Seismic facies analysis using machine-learning. Geophysics. 83: O83-O95. doi: 10.1190/geo2017-0595.1
  • Wrona, Thilo; Magee, Craig; Jackson, Christopher A.-L.; Huuse, Mads; Taylor, Kevin G. 2017. Kinematics of polygonal fault systems: Observations from the northern north sea. Frontiers in Earth Science. 5. doi: 10.3389/feart.2017.00101
  • Wrona, Thilo; Taylor, Kevin G.; Jackson, Christopher A.-L.; Huuse, Mads; Najorka, Jens; Pan, Indranil. 2017. Impact of silica diagenesis on the porosity of fine-grained strata: An analysis of Cenozoic mudstones from the North Sea. Geochemistry Geophysics Geosystems. 18: 1537-1549. doi: 10.1002/2016GC006482

More information in national current research information system (CRIStin)

Wrona T., Magee C., Jackson C.A.-L., Huuse M. and Taylor K.G. (2017) Kinematics of Polygonal Fault Systems: Observations from the Northern North Sea. Front. Earth Sci. doi: 10.3389/feart.2017.00101

Wrona T., Taylor K.G., Jackson C.A.-L., Huuse M., Najorka J., and Pan I. (2017) Impact of silica diagenesis on the porosity of fine-grained strata: An analysis of Cenozoic mudstones from the North Sea. Geochem. Geophys. Geosyst. doi:10.1002/2016GC006482.

Wrona T., Jackson C.A.-L., Huuse M. and Taylor K.G. (2017) Silica diagenesis in Cenozoic mudstones of the North Viking Graben: physical properties and basin modelling. Basin Research. doi:10.1111/bre.12168

Wrona T., Wolovick M.J., Ferraccioli F., Corr H., Jordan T. and Siegert M.J. (2017) Position and variability of complex structures in the central East Antarctic Ice Sheet. Geological Society, London, Special Publications. https://doi.org/10.1144/SP461.12

Magee C., Maharaj S.M., Wrona T. and Jackson C.A.-L. (2015) Controls on the expression of igneous intrusions in seismic reflection data. Geosphere. https://doi.org/10.1130/GES01150.1

Osagiede E.E., Duffy O.B., Jackson C.A.-L. and Wrona T. (2014) Quantifying the growth history of seismically-imaged normal faults. Journal of Structural Geology. https://doi.org/10.1016/j.jsg.2014.05.021