Abstract
The thesis consists of nine individual papers which have been published (5), are in press (3) or submitted to international journals (1). The first three papers discuss the evolution of the intracratonic Skagerrak Basin comprising the offshore part of the Late Paleozoic Oslo Rift. A geodynamic model is developed including lithospheric extension, metamorphism of magmatic rocks emplaced on crustal levels and rheology. Deep seismic (16 s two way time) reflection data reveal the presence of crustal structures approximately 1000 My old. The lithospheric profile shows reflections down to 100 km depth. Papers 4-7 concern the Voering Volcanic Margin off mid-Norway. A positive asthenospheric temperature anomaly of 50-80{sup o}C is found sufficient to account for the huge magmatism which occurred during continental break-up. Rifting commenced about 75 My and the established lithospheric relief was infilled by hot material from the proto-Iceland plume established beneath Greenland at about 62 My. The last two papers (8-9) deal with new methods for estimating heat flow when rifting occurs above a hot asthenosphere, and the effect on the amount and composition of magma generated by decompression melting when syntectonic conductive and adiabatic cooling are accounted for.
Citation Formats
Pedersen, T.
Geodynamic basin models: development of the intracratonic Skagerrak basin and the Voering volcanic margin.
Norway: N. p.,
1992.
Web.
Pedersen, T.
Geodynamic basin models: development of the intracratonic Skagerrak basin and the Voering volcanic margin.
Norway.
Pedersen, T.
1992.
"Geodynamic basin models: development of the intracratonic Skagerrak basin and the Voering volcanic margin."
Norway.
@misc{etde_10113254,
title = {Geodynamic basin models: development of the intracratonic Skagerrak basin and the Voering volcanic margin}
author = {Pedersen, T}
abstractNote = {The thesis consists of nine individual papers which have been published (5), are in press (3) or submitted to international journals (1). The first three papers discuss the evolution of the intracratonic Skagerrak Basin comprising the offshore part of the Late Paleozoic Oslo Rift. A geodynamic model is developed including lithospheric extension, metamorphism of magmatic rocks emplaced on crustal levels and rheology. Deep seismic (16 s two way time) reflection data reveal the presence of crustal structures approximately 1000 My old. The lithospheric profile shows reflections down to 100 km depth. Papers 4-7 concern the Voering Volcanic Margin off mid-Norway. A positive asthenospheric temperature anomaly of 50-80{sup o}C is found sufficient to account for the huge magmatism which occurred during continental break-up. Rifting commenced about 75 My and the established lithospheric relief was infilled by hot material from the proto-Iceland plume established beneath Greenland at about 62 My. The last two papers (8-9) deal with new methods for estimating heat flow when rifting occurs above a hot asthenosphere, and the effect on the amount and composition of magma generated by decompression melting when syntectonic conductive and adiabatic cooling are accounted for.}
place = {Norway}
year = {1992}
month = {May}
}
title = {Geodynamic basin models: development of the intracratonic Skagerrak basin and the Voering volcanic margin}
author = {Pedersen, T}
abstractNote = {The thesis consists of nine individual papers which have been published (5), are in press (3) or submitted to international journals (1). The first three papers discuss the evolution of the intracratonic Skagerrak Basin comprising the offshore part of the Late Paleozoic Oslo Rift. A geodynamic model is developed including lithospheric extension, metamorphism of magmatic rocks emplaced on crustal levels and rheology. Deep seismic (16 s two way time) reflection data reveal the presence of crustal structures approximately 1000 My old. The lithospheric profile shows reflections down to 100 km depth. Papers 4-7 concern the Voering Volcanic Margin off mid-Norway. A positive asthenospheric temperature anomaly of 50-80{sup o}C is found sufficient to account for the huge magmatism which occurred during continental break-up. Rifting commenced about 75 My and the established lithospheric relief was infilled by hot material from the proto-Iceland plume established beneath Greenland at about 62 My. The last two papers (8-9) deal with new methods for estimating heat flow when rifting occurs above a hot asthenosphere, and the effect on the amount and composition of magma generated by decompression melting when syntectonic conductive and adiabatic cooling are accounted for.}
place = {Norway}
year = {1992}
month = {May}
}