Quantification of the Pliocene-Pleistocene erosion of the Barents Sea from present-day bathymetry

Rasmussen, E.; Fjeldskaar, Willy

doi:10.1016/0921-8181(95)00015-1

Cited by 54 publications

(27 citation statements)

References 15 publications

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“…On the European polar margin, the evidence for a large Plio^Pleistocene sediment in£ux to the Nansen Basin from the Svalbard continental margin is fairly well established (Rasmussen and Fjeldskaar, 1996;Va fignes, 1996;Thiede et al, 1995). A number of glacial through-mouth fans formed on the circum-arctic continental margin, but it is presently not known if any developed into submarine fans with a channel/levee system which extended far into the adjacent abyssal plain.…”

Section: Discussionmentioning

confidence: 99%

A submarine fan in the Amundsen Basin, Arctic Ocean

et al. 2004

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Seismic reflection data from drifting ice stations and an icebreaker survey document the presence of a submarine fan along the east flank of the Lomonosov Ridge in the Amundsen Basin, Arctic Ocean. The fan extends from a source area at the North Greenland and Canadian Arctic continental margin to the North Pole. The fan probably developed in response to the combined effect of increased glacial sediment input during the Plio^Pleistocene and topographically confined transport of glacial debris in the deep sea passage between Lincoln Sea margin and the southern end of the Lomonosov Ridge. ß

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Section: Discussionmentioning

confidence: 99%

A submarine fan in the Amundsen Basin, Arctic Ocean

et al. 2004

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“…Mostly based on the present-day bathymetry and onshore observations, Nansen (1904) suggested a subaerially exposed shelf prior to the Pleistocene glaciations. The evolution of the Pleistocene bathymetry was revisited later in the 1990s and early 2000s, thanks to new geophysical data providing information about the sediment volumes eroded from the shelf and deposited as the Bjørnøya (Bear Island) and Storfjorden trough mouth fans (Vorren et al, 1991;Knutsen et al, 1992;Rasmussen & Fjeldskaar, 1996;Dimakis et al, 1998;Elverhøi et al, 1998;Butt et al, 2002). For example, Rasmussen & Fjeldskaar (1996) proposed a first numerical model of preglacial topography of the Barents Sea.…”

Section: Introductionmentioning

confidence: 99%

“…The evolution of the Pleistocene bathymetry was revisited later in the 1990s and early 2000s, thanks to new geophysical data providing information about the sediment volumes eroded from the shelf and deposited as the Bjørnøya (Bear Island) and Storfjorden trough mouth fans (Vorren et al, 1991;Knutsen et al, 1992;Rasmussen & Fjeldskaar, 1996;Dimakis et al, 1998;Elverhøi et al, 1998;Butt et al, 2002). For example, Rasmussen & Fjeldskaar (1996) proposed a first numerical model of preglacial topography of the Barents Sea. Additionally, Dimakis et al (1998) and Butt et al (2002) provided further topography reconstructions of the Barents Sea prior to and after the intensification of the Northern Hemisphere glaciation.…”

Section: Introductionmentioning

confidence: 99%

“…The topographic development of the Barents Sea during this period is often attributed to glacial carving and sediment transport driven by glacial activity (Vorren et al, 1989;Andreassen et al, 2004Andreassen et al, , 2007Patton et al, 2015). Glacially related sediment redistribution resulted in isostatic readjustments of the lithosphere that contributed to 1-2 km of Cenozoic uplift (Nyland et al, 1992;Rasmussen & Fjeldskaar, 1996;Green & Duddy, 2010;Zattin et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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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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“…2). In Eocene to Miocene times, the uplifted parts of the Barents Sea shelf were subject to erosion and the eroded material was deposited in the southern and eastern Barents Sea (Rasmussen and Fjeldskaar, 1996;Dimakis et al, 1998). In the HB two major cooling phases linked to uplift and erosion, dated between ~40 and 20 Ma and ~20 and 0 Ma, were identified using AFTA (Green and Duddy, 2010).…”

Section: Geological Overviewmentioning

confidence: 99%

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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Quantification of the Pliocene-Pleistocene erosion of the Barents Sea from present-day bathymetry

Cited by 54 publications

References 15 publications

A submarine fan in the Amundsen Basin, Arctic Ocean

A submarine fan in the Amundsen Basin, Arctic Ocean

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

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

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