The Plio-Pleistocene glaciation of the Barents Sea–Svalbard region: a new model based on revised chronostratigraphy

Knies, Jochen; Matthießen, Jens; Vogt, Christoph; Laberg, Jan Sverre; Hjelstuen, Berit Oline; Smelror, Morten; Larsen, Eiliv; Andreassen, Karin; Eidvin, Tor; Vorren, Tore O.

doi:10.1016/j.quascirev.2008.12.002

Cited by 210 publications

(221 citation statements)

References 113 publications

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“…Glaciations in the southern Barents Sea are thought to commence about 1.0 Ma (Knies et al, 2009) which does not coincide with the ages of erosion detected by AFTA used in this study (Duddy, 1998). According to AFTA dating the most recent Barents Sea cooling episode occurred before glacial events (10-5 Ma).…”

Section: Discussioncontrasting

confidence: 78%

Assessment of the Cenozoic Erosion Amount Using Monte Carlo Type-Petroleum Systems Modeling of the Hammerfest Basin, Western Barents Sea

Zięba¹,

Daszinnies²,

Emmel³

et al. 2014

American Journal of Geoscience

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The Cenozoic uplift and erosion is often believed to be a major risk factor in hydrocarbon exploration in the Barents Sea causing petroleum redistribution and leakage from filled traps. Therefore, the estimation of erosion amount is an important but often underrepresented task in the basin modeling procedure. The assessment of erosion magnitudes and spatial distribution by geochemical and thermo chronological methods results in very different estimates and/or does not consider uncertainties of input data. In this study, this problem is approached by using Monte Carlo simulation techniques in secondary migration basin modeling. Thereby, amounts of early and late Cenozoic erosion episodes are described by probability distributions and the modeling results were evaluated considering their uncertainty ranges. In addition, overpressure and related leakage scenarios are considered in the petroleum basin models to study their effect on modeling results. It is shown that the early Cenozoic erosion event had a generally higher erosion magnitude than the late Cenozoic event (1.0-1.3 and 0.4-1.2 km respectively). Modeled erosion estimates are not very sensitive to overpressure modeling which is found to affect only the early Cenozoic erosion amount estimates at low degree.

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Section: Discussioncontrasting

confidence: 78%

Assessment of the Cenozoic Erosion Amount Using Monte Carlo Type-Petroleum Systems Modeling of the Hammerfest Basin, Western Barents Sea

Zięba¹,

Daszinnies²,

Emmel³

et al. 2014

American Journal of Geoscience

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“…Increase in sedimentation rate formed huge, regional depocentres near the shelf edge offshore Mid-Norway and in front of bathymetric troughs in the northern North Sea and western Barents Sea (Faleide et al, 2008). Uplift and glacial erosion during Pliocene to Pleistocene (Dimakis et al, 1998;Doré and Jensen, 1996;Dörr et al, 2012;Faleide et al, 1996;Green and Duddy, 2010;Henriksen et al, 2011;Vorren et al, 1991) has evolved the deep marine fans in the adjacent oceanic domains along the northern and western passive margins (Knies et al, 2009). …”

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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“…This is achieved by a modelling of the flexural isostasy (Vening-Meinesz, 1941). The model uses the revisited Pleistocene erosion and deposition maps (Laberg et al, 2012) and chronostratigraphy (Knies et al, 2009;Laberg et al, 2010), as well as incorporating the effects of the global sea-level change (Boer et al, 2014). We aim to provide a first approximation of the geometry and water depth changes along the western continental margin that affected the maximum extent of the ice sheet (Stokes et al, 2015) as well as northward heat and salt transport through advection of warm North Atlantic waters (Hurdle, 1986).…”

Section: Introductionmentioning

confidence: 99%

A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry

Zięba¹,

Omosanya²,

Knies³

2017

NJG

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The topographic relief of the Barents Sea was subjected to major changes during the past 1.5 million years mostly due to sediment redistribution driven by glacial activity. This paper addresses the problem of Pleistocene bathymetric evolution of the southern Barents Sea using a numerical modelling approach that considers the influence of regional isostasy on relief development. The model presented in this work shows that most of the bathymetric features were initiated prior to the first documented, shelf-edge glaciations at around 1.5 Ma. During the Early Pleistocene (Calabrian), the Barents Sea shelf was close to sea level with some areas elevated to about 300 m. Most of the shelf experienced up to 200 m topography reduction during the Early to Middle Pleistocene (1.5-0.7 Ma) facilitating bifurcation of the North Atlantic waters into the Barents Sea. Later during the Middle Pleistocene-Present (0.7-0.0 Ma) the relief deepened by 0 to 250 m. Our results demonstrate that the present-day topography of the southern Barents Sea is the consequence of glacial activity influenced by a regional isostatic component, which is the result of selective trough erosion and significant sediment deposition at the Barents Sea margins during the Pleistocene.

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The Plio-Pleistocene glaciation of the Barents Sea–Svalbard region: a new model based on revised chronostratigraphy

Cited by 210 publications

References 113 publications

Assessment of the Cenozoic Erosion Amount Using Monte Carlo Type-Petroleum Systems Modeling of the Hammerfest Basin, Western Barents Sea

Assessment of the Cenozoic Erosion Amount Using Monte Carlo Type-Petroleum Systems Modeling of the Hammerfest Basin, Western Barents Sea

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

A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry

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