Université de Fribourg

Greenland – Norway separation: A geodynamic model for the North Atlantic

Mosar, Jon ; Eide, Elizabeth A. ; Osmundsen, Per Terje ; Sommaruga, Anna ; Torsvik, Trond H.

In: Norwegian Journal of Geology, 2002, vol. 82, p. 282

Combining information from onshore and offshore Mid-Norway, we propose a structural model for the Scandinavian North Atlantic passive margin from Permo-Carboniferous through Present. We re-examine the role of post-Permo-Carboniferous normal faults and define an innermost boundary fault system forming the continentward limit of the rifted margin. Crustal-scale cross-sections of the...

Université de Fribourg

Reconstructions of the continents around the North Atlantic at about the 60th parallel

Torsvik, Trond H. ; Van der Voo, Rob ; Meert, Joseph G. ; Mosar, Jon ; Walderhaug, Harald J.

In: Earth and Planetary Science Letters, 2001, vol. 187(1-2), p. 55

Late Carboniferous–Early Tertiary apparent polar wander (APW) paths (300–40 Ma) for North America and Europe have been tested in various reconstructions. These paths demonstrate that the 500 fathom Bullard et al. fit is excellent from Late Carboniferous to Late Triassic times, but the continental configuration in northern Pangea changed systematically between the Late Triassic (ca. 214 Ma)...

Université de Fribourg

Cretaceous-Tertiary geodynamics: a North Atlantic exercise

Torsvik, Trond H. ; Mosar, Jon ; Eide, Elizabeth A.

In: Geophysical Journal International, 2001, vol. 146 (3), p. 850

New reconstructions are presented for the Cretaceous–Early Tertiary North Atlantic using a combination of palaeomagnetic, hotspot and magnetic anomaly data. We utilize these reconstructions in an analysis of previously described misfits between the North Atlantic Plate elements at successive intervals during this time period. We are able to achieve reasonable overlap between the hotspot and...

Université de Fribourg

North Atlantic sea-floor spreading rates: implications for the Tertiary development of inversion structures of the Norwegian–Greenland Sea

Mosar, Jon ; Lewis, Gavin ; Torsvik, Trond H.

In: Journal of the Geological Society, 2002, vol. 159(5), p. 503

Tertiary development of the Norwegian continental margin was dominated by the opening of the Arctic–North Atlantic Ocean. The correct identification of magnetic anomalies and their ages and the analysis of spreading rates during the formation of this ocean are important in understanding the development of the region and specifically the history of its passive margins. Three ocean domains, the...