Latest Caledonian to Present tectonomorphological development of southern Norway

Gabrielsen, Roy H.; Faleide, Jan Inge; Pascal, Christophe; Braathen, Alvar; Nystuen, Johan Petter; Etzelmüller, Bernd; O'Donnell, Sejal

doi:10.1016/j.marpetgeo.2009.06.004

Cited by 72 publications

(91 citation statements)

References 117 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nielsen et al, 2009, Pascal andOlesen, 2009;Gabrielsen et al, 2010). It has been proposed that the relief of Mid Norway reflects normal faulting along the major segments of the MTFC that occurred in the geological past (Redfield and Osmundsen, 2009 and references therein).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Geophysical characterisation of two segments of the Møre-Trøndelag Fault Complex, Mid Norway

et al. 2011

View full text Add to dashboard Cite

Abstract. The Møre-Trøndelag Fault Complex (MTFC) has controlled the tectonic evolution of Mid Norway and its shelf for the past 400 Myr through repeated reactivations during Palaeozoic, Mesozoic and perhaps Cenozoic times, the very last phase of reactivation involving normal to oblique-slip faulting. Despite its pronounced signature in the landscape, its deep structure has largely remained unresolved until now. We focused on two specific segments of the MTFC (i.e. the Tjellefonna and Baeverdalen faults) and acquired multiple geophysical datasets (i.e. gravity, magnetic, resistivity and shallow refraction profiles).A 100-200 m-wide zone of gouge and/or brecciated bedrock steeply dipping to the south is interpreted as being the Tjellefonna fault sensu stricto. The fault appears to be flanked by two additional but minor damage zones. A secondary normal fault also steeply dipping to the south but involving indurated breccias was detected ∼1 km farther north. The Baeverdalen fault, ∼12 km farther north, is interpreted as a ∼700 m-wide and highly deformed zone involving fault gouge, breccias and lenses of intact bedrock. As such, it is probably the most important fault segment in the studied area and accommodated most of the strain during presumably Late Jurassic normal faulting. Our geophysical data are indicative of a Baeverdalen fault dipping steeply towards the south, in agreement with the average orientation of the local tectonic grain. Our findings suggest that the influence of Mesozoic normal faulting along the MTFC on landscape development is more complex than previously thought.

show abstract

Section: Discussionmentioning

confidence: 99%

“…A consensus on the origin of the enigmatic topography of Norway is, however, still pending (e.g. Nielsen et al, 2009;Gabrielsen et al, 2010). With the present study, we aim to shed new light on the deep structure of the MTFC and introduce new observations and data to the ongoing debate.…”

Section: Introductionmentioning

confidence: 90%

Geophysical characterisation of two segments of the Møre-Trøndelag Fault Complex, Mid Norway

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Silurian to Early Devonian times, the uplift, exhumation and denudation of the mountain chain was rapid (Coward et al, 2003;Fossen et al, 2008;Gee et al, 2008;Gabrielsen et al, 2010). During the Devonian, the North Sea area drifted northwards from around 20°S to 15°S, and sedimentation occurred in a hot, arid and continental setting (Downie, 1998).…”

Section: Study Area Ca 1000 Kmmentioning

confidence: 99%

“…The absence of pre-Permian sediments on structural highs has been attributed to tilting and deep erosion caused by Permo-Triassic lithospheric stretching, resulting in exposed basement rocks and development of large half-grabens (Faerseth et al, 1995;Nøttvedt et al, 1995;Gabrielsen et al, 2010). In the Late Permian, the Zechstein Sea transgressed from the north, possibly through a narrow Viking Graben, resulting in the deposition of 2-3 km of Zechstein Group sediments, comprising shales (Kupferschiefer Formation), carbonates and evaporites in the Permian basins (Ziegler, 1992;Taylor, 1998).…”

Section: Study Area Ca 1000 Kmmentioning

confidence: 99%

Altered basement rocks on the Utsira High and its surroundings, Norwegian North Sea

Riber¹,

Dypvik²,

Sørlie³

2015

NJG

View full text Add to dashboard Cite

As part of the recent discoveries on the Utsira High (Edvard Grieg and Johan Sverdrup fields), altered and fractured basement rocks were for the first time shown to act as a reservoir and possible migration paths for commercial hydrocarbon deposits on the Norwegian Continental Shelf. Altered basement rocks are underlying the main Upper Jurassic reservoir rocks in Johan Sverdrup and the main Cretaceous, Jurassic and Triassic reservoir rocks in Edvard Grieg. In the present study, eighteen basement cores from the Utsira High have been classified and investigated for signs of alteration, including subaerial weathering. The results show highly variable basement composition, including metasandstones, phyllites, granites, granodiorites and gabbroic rocks. In core view most of the basement rocks show signs of a medium to high degree of fracturing. Alteration has taken place in most of the cores, ranging from slight discoloration to disintegration along fractures, and to total fragmentation of the rock. The fragmentation of the rock is commonly associated with the dissolution of primary minerals and precipitation of secondary clays in the newly formed pore space. The upwards increasing disintegration and increasing amount of clay observed in the basement rocks from two of the wells (16/3-4 and 16/1-15) indicate that subaerial weathering was the main alteration agent.

show abstract

“…Scandinavia forms a tilted passive margin, where highest elevations are found towards the western coast, decreasing towards the east and the Bothnian Sea (e.g., Gabrielsen et al, 2010). The area has undergone multiple glaciations during the Pleistocene, with the largest glaciations covering the whole of northern Europe several times during the last c. 1 Mio.…”

Section: Settingsmentioning

confidence: 99%

Modelling the permafrost distribution in steep rock walls

Steiger¹,

Etzelmüller²,

Westermann³

et al. 2016

NJG

View full text Add to dashboard Cite

In many cold mountain areas, permafrost is a key factor for the stability of rock walls. This study provides a regional assessment of potential permafrost occurrence in steep rock walls in Norway. We present a map of steep rock walls with possible permafrost occurrence for Norway. This map is created from interpolated and gridded surface air temperature data and a terrain analysis based on a 10 m digital elevation model (DEM). The results are evaluated against field observations, a rock glacier inventory and local rock-wall temperature measurements. We show that permafrost in steep rock walls is found in around 9% of all the steep rock walls in Norway. Most frequently these are found in central southern Norway and in the LyngenKåfjord area in northern Norway. The study discusses the spatial distribution pattern of permafrost rock walls, and shows that in northern Norway mapped rock-slope failures are in close association with permafrost rock walls.

show abstract

Latest Caledonian to Present tectonomorphological development of southern Norway

Cited by 72 publications

References 117 publications

Geophysical characterisation of two segments of the Møre-Trøndelag Fault Complex, Mid Norway

Geophysical characterisation of two segments of the Møre-Trøndelag Fault Complex, Mid Norway

Altered basement rocks on the Utsira High and its surroundings, Norwegian North Sea

Modelling the permafrost distribution in steep rock walls

Contact Info

Product

Resources

About