A possible Caledonide arm through the Barents Sea imaged by OBS data

Breivik, A. J.; Mjelde, Rolf; Grogan, Paul; Shimamura, Hideki; Murai, Yoshio; Nishimura, Yuichi; Kuwano, A.

doi:10.1016/s0040-1951(02)00135-x

Cited by 67 publications

(70 citation statements)

References 45 publications

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“…The Norwegian sector of the CFB is known as the Scandinavian Caledonides [19,41]. It extends as far north as Spitzbergen and can be projected further north to the Canadian Arctic (Gudlaugsson et al [50,11,61,115]). The CFB formed due to the closure of the early Palaeozoic Iapetus Ocean and Laurentia/Baltica collision beginning in the Silurian and continuing into the Devonian.…”

Section: Early Palaeozoic Caledonian Fold Belt (Cfb)mentioning

confidence: 99%

“…The main suture between Laurentia and Baltica was speculated to bifurcate, with one branch located between north Greenland and Svalbard, and another one projecting into the Barents Sea (Gudlaugsson et al [50,11,61]). Gee et al [43], proposed the suture to be located further east, between the Svalbard and Franz Josef Land archipelagoes, and deformation front approaching Novaya Zemlya and Severnaya Zemlya islands.…”

Section: Early Palaeozoic Caledonian Fold Belt (Cfb)mentioning

confidence: 99%

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Fold belts and sedimentary basins of the Eurasian Arctic

Drachev¹

2016

Arktos

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The vast Eurasian Arctic epicontinental shelf and adjoining mainland has a very complex structure and tectonic history as a result of a series of continent-continent collisions, accretion of terranes and crustal extension phases during Neoproterozoic and Phanerozoic times. Significant parts of major Eurasian fold belts extend far north into the Arctic below thick infill of post-orogenic sedimentary basins, where their architecture remains highly disputed. Large Eurasian Arctic sedimentary basins formed as a result of orogenic collapse, back-arc extension, or intracontinental extension associated with the breakup of the Laurussia, Laurasia, Pangea and Eurasia supercontinents. There are over 40 sedimentary basins of variable age and genesis which are thought to bear significant undiscovered hydrocarbon resources in the region. This article reviews the current state-of-knowledge of Eurasian Arctic tectonics and highlights questions that remain to be addressed. The overall focus is on the Russian sector of the Arctic being less known to a broad geoscience community.

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Section: Early Palaeozoic Caledonian Fold Belt (Cfb)mentioning

confidence: 99%

Section: Early Palaeozoic Caledonian Fold Belt (Cfb)mentioning

confidence: 99%

Fold belts and sedimentary basins of the Eurasian Arctic

Drachev¹

2016

Arktos

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“…The tectonic history of the western Barents Sea (Figure 2.1) can be traced back to the Caledonian Orogeny that strikes through northernmost Norway and northeastwards into the Barents Shelf (Barrère et al, 2009;Breivik et al, 2005Breivik et al, , 2002Gee et al, 2008;Gernigon and Brönner, 2012;Gernigon et al, 2014;Gudlaugsson et al, 1998;Marello et al, 2013;Ritzmann and Faleide, 2007;Roberts, 2003). The Caledonian fabric is obscured in most parts of Barents Sea, except on Svalbard by late Proterozoic and Mesozoic sedimentary basins (Breivik et al, 2002;Gee et al, 2008).…”

Section: Tectonic Evolution Of the Southwestern Barents Seamentioning

confidence: 99%

“…The Caledonian fabric is obscured in most parts of Barents Sea, except on Svalbard by late Proterozoic and Mesozoic sedimentary basins (Breivik et al, 2002;Gee et al, 2008).…”

Section: Tectonic Evolution Of the Southwestern Barents Seamentioning

confidence: 99%

Deep-seated faults and hydrocarbon leakage in the Snøhvit Gas Field, Hammerfest Basin, Southwestern Barents Sea

Mohammedyasin

Lippard

Omosanya

et al. 2016

Marine and Petroleum Geology

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High-quality 3D seismic data are used to analyze the history of fault growth and hydrocarbon leakage in the Snøhvit Field, southwestern Barents Sea. The aim of this work is to evaluate the role of tectonic fracturing as a mechanism driving fluid-flow in the study area. To achieve this aim, an integrated approach including seismic interpretation, multiple seismic attribute analysis, fault modeling and displacement analysis was used.The six major faults in the study area are dip-slip normal faults which are characterized by complex lateral and vertical segmentation. The three main episodes of fault reactivation interpreted were in late Jurassic (Kimmeridgian), early Cretaceous and Paleocene times. Fault reactivation in the study area is mainly through dip-linkage. Throw-distance plots of the representative faults also revealed along-strike linkage and multi-skewed C-type profiles. The throw profiles show that faults in the study area evolved through polycyclic activity involving both blind propagation, syn-sedimentary activity and that they have their maximum displacement at the reservoir zone. The expansion and growth indices provide evidence for coeval fault activity with sedimentation and interaction of the faults with a free surface during their evolution.

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“…Zelt 1999;Breivik et al 2002Breivik et al , 2003Ritzmann et al 2002;Ljones et al 2004;Breivik et al 2005;Kandilarov et al 2008;Mjelde et al 2008). We used these two indicators to assess the reliability of our models.…”

Section: P-wave Modeling and Modeling Uncertaintiesmentioning

confidence: 99%

Crustal structure of the ultra-slow spreading Knipovich Ridge, North Atlantic, along a presumed ridge segment center

et al. 2010

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A combined ocean bottom seismometer, multichannel seismic reflection and gravity study has been carried out along the spreading direction of the Knipovich Ridge over a topographic high that defines a segment center. The youngest parts of the crust in the immediate vicinity of the ridge reveal fractured Oceanic Layer 2 and thermally expanded and possibly serpentinized Oceanic Layer 3. The mature part of the crust has normal thickness and seismic velocities with no significant crustal thickness and seismic velocity variations. Mature Oceanic Layer 2 is in addition broken into several rotated fault blocks. Comparison with a profile acquired *40 km north of the segment center reveals significant differences. Along this profile, reported earlier, periods of slower spreading led to generation of thin crust with a high P-wave velocity (Vp), composed of a mixture of gabbro and serpentinized mantle, while periods of faster spreading led to generation of more normal gabbroic crust. For the profile across the segment center no clear relation exists between spreading rate and crustal thickness and seismic velocity. In this study we have found that higher magmatism may lead to generation of oceanic crust with normal thickness even at ultra-slow spreading rates.

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A possible Caledonide arm through the Barents Sea imaged by OBS data

Cited by 67 publications

References 45 publications

Fold belts and sedimentary basins of the Eurasian Arctic

Fold belts and sedimentary basins of the Eurasian Arctic

Deep-seated faults and hydrocarbon leakage in the Snøhvit Gas Field, Hammerfest Basin, Southwestern Barents Sea

Crustal structure of the ultra-slow spreading Knipovich Ridge, North Atlantic, along a presumed ridge segment center

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