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Reference Work Entry In depth
Volcanism and Climate
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Living Reference Work Entry In depth
Volcanism and Climate
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Chapter
Impact Structure and Morphology
The Mjølnir crater (Fig. 3.1) was first interpreted as an impact structure by Gudlaugsson (1993) based on its geophysical signature and overall geological setting. This inference was derived from a limited amo...
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Chapter
Impact Geophysics and Modelling
During impact, the passage of the shock wave results in extensive in situ fracturing and autochthonous target rock brecciation. Target material is excavated and ejected in ballistic trajectories upward and out...
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Article
Early Eocene sea floor spreading and continent-ocean boundary between Jan Mayen and Senja fracture zones in the Norwegian-Greenland Sea
Sea floor spreading anomalies in the Lofoten-Greenland basins reveal an unstable plate boundary characterized by several small-offset transforms for a period of ∼4 m.y. after opening. North of the Jan Mayen Fr...
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Chapter
Seismic Correlation of the Mjølnir Marine Impact Crater to Shallow Boreholes
We use seismic reflection data to correlate deposits related to the 40km-diameter Mjølnir marine impact crater to two boreholes; one near the center of the crater and another ~30 km outside the crater peripher...
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Article
Late Cretaceous-Paleocene extension on the Vøring Volcanic Margin
High-quality seismic data document a Maastrichtian-Paleocene rift episode on the Vøring margin lasting for ∼20 m.y. prior to continental breakup. The rift structures are well imaged in the Fenris Graben and Gj...
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Chapter
Rifted Continental Margin off Mid-Norway
New deep seismic profiles and velocity measurements on the mid-Norway margin image the crustal structure and provide data for estimating the tectono-magmatic dimensions of the Late CretaceousPaleocene rift epi...
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Chapter
Volcanic Margin Concepts
Volcanic margins are part of a tectono-magmatic system in which the margin fonnation depends on lithospheric and asthenospheric properties before, during and after continental breakup. Whether a volcanic margi...
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Article
Møre Margin: Crustal structure from analysis of Expanded Spread Profiles
Analysis in both the x—t and τ—p domains of high-quality Expanded Spread Profiles across the Møre Margin show that many arrivals may be enhanced be selective ray tracing and velocity filtering combined with co...
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Chapter and Conference Paper
Cenozoic evolution of the continental margin off Norway and western Svalbard
Following the Mesozoic phases of crustal extension the region between Norway and Greenland became relatively quiet, with regional subsidence dominating in a large basinal area which extended into the North Sea...
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Article
Pre-23 magnetic anomalies between Jan Mayen and Greenland-Senja fracture zones in the Norwegian sea
Analysis of magnetic data between the Jan Mayen and Senja fracture zones indicates that the anomaly 24A-B sequence extends from the Lofoten Basin onto the outer Vøring Plateau. Anomaly patterns, including thos...
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Chapter
Speculations about the Paleodepth of the Greenland-Scotland Ridge During Late Mesozoic and Cenozoic Times
The Greenland-Scotland transverse ridge has separated the deep basins of the Norwegian-Greenland Sea from the main North Atlantic Ocean since the early Cenozoic. Originally, it probably formed a large subaeria...
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Article
Continental margin off Lofoten-Vesterålen northern Norway
The continental margin off the Lofoten-Vesterålen islands between 67° and 70°N becomes progressively narrower northwards. The continental shelf west of the islands and in the Vestfjord is underlain by a relati...
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Chapter and Conference Paper
Observations on the Margin Off Norway (66–70°N) and the History of Early Cenozoic Rifting
The early history of rifting and subsequent formation of an ocean are reflected in the structural and depositional history of the passive continental margin. The margin off Norway between the Jan Mayen and Gre...
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Chapter
Margins of the Norwegian-Greenland Sea
The continental margins in the Norwegian-Greenland Sea consist of rifted and sheared segments that are related to the initial opening of the ocean. Parts of the rifted margins are characterized by basement hig...
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Article
Boundary between Continental and Oceanic Crust at the Margin of Rifted Continents
From a detailed study of the continental margin off Norway we have been able to establish the presence of two buried marginal escarpments—Vøring Plateau Escarpment and the Faeroe Shetland Escarpment. We believ...
