Thermochronological constraints to late Cenozoic exhumation of the Barents Sea Shelf

Zattin, Massımılıano; Andreucci, Benedetta; Toffoli, Barbara De; Grigo, D.; Tsikalas, Filippos

doi:10.1016/j.marpetgeo.2016.03.004

Cited by 28 publications

(18 citation statements)

References 29 publications

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“…Abbreviations: BB -Bjørnøya Basin, BP -Bjarmeland Platform, BRFC -Bjørnøyrenna Fault Complex, HFB -Hammerfest Basin, FsB -Fingerdjupet subbasin, FP -Finnmark Platform, HRB -Harstad Basin, LH -Loppa High, MB -Maud Basin, NKB -Nordkapp Basin, PSP -Polheim Subplatform, RLFC -Ringvassøy-Loppa Fault Complex, SH -Stappen High, SR -Senja Ridge, SVB -Sørvestsnaget Basin, TB -Tromsø Basin, VH -Veslemøy High, Vvp -Vestbakken volcanic province. al., 2013;Zattin et al, 2016). Apatite fission track data suggest that uplift started during the Late MioceneEarly Pliocene, between 10 and 5 Ma (Green & Duddy, 2010;Zattin et al, 2016).…”

Section: Cenozoic Evolution Of the Southern Barents Seamentioning

confidence: 99%

“…al., 2013;Zattin et al, 2016). Apatite fission track data suggest that uplift started during the Late MioceneEarly Pliocene, between 10 and 5 Ma (Green & Duddy, 2010;Zattin et al, 2016). An elevated subaerial Barents shelf is thought to have prevailed until ~1.6-1.0 Ma and developed further into a submarine-subglacial relief at approximately 1.0 Ma (Dimakis et al, 1998;Butt et al, 2002).…”

Section: Cenozoic Evolution Of the Southern Barents Seamentioning

confidence: 99%

“…5). The total Cenozoic uplift magnitude is suggested to vary between 1 km and more than 2 km (Nyland et al, 1992;Green & Duddy, 2010;Zattin et al, 2016). The Pleistocene isostatic component of the uplift is thus deemed to be relatively small, varying from 10 to 20% in the banks and about 10 to 40% in the troughs.…”

Section: Driving Forces For the Bathymetric Changesmentioning

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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Section: Cenozoic Evolution Of the Southern Barents Seamentioning

confidence: 99%

Section: Cenozoic Evolution Of the Southern Barents Seamentioning

confidence: 99%

Section: Driving Forces For the Bathymetric Changesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Zięba¹,

Omosanya²,

Knies³

2017

NJG

View full text Add to dashboard Cite

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“…Renewed tectonic activity was apparent toward the middle Jurassic in both the North Atlantic and the Arctic regions, continuing into earliest Cretaceous time involving multiple phases of extension and magmatism (Blaich et al, ; Clark et al, ; Corfu et al, ; Faleide et al, , ; Maher, ; Polteau et al, ; Serck et al, ). Episodes of pronounced inversion and erosion affected the Barents shelf region during the late Mesozoic and Cenozoic (Baig et al, ; Dimakis et al, ; Green & Duddy, ; Henriksen et al, ; Sobolev, ; Zattin et al, ).…”

Section: Geological Settingmentioning

confidence: 99%

The Paleozoic Evolution of the Olga Basin Region, Northern Barents Sea: A Link to the Timanian Orogeny

Klitzke

Franke

Ehrhardt

et al. 2019

Geochem Geophys Geosyst

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The evolution of the Olga Basin region in the northern Norwegian Barents Sea and its relation to the Caledonian and Timanian orogenies is poorly understood due to sparse geophysical data and the lack of well control. In 2015, the German Federal Institute for Geosciences and Natural Resources (BGR) acquired deep multichannel seismic lines as well as gravity and magnetic data. The new seismic data reveal that the Olga and Sørkapp Basins evolved as a W-E striking half-graben system along a major normal fault in the north and a smaller normal fault in the south, respectively. Deep crustal undulating high-amplitude reflections below the Olga and Sørkapp Basins coincide with W-E striking local magnetic maxima and may imply that the basins evolved on top of old collisional fabrics. The absence of major compressional deformation implies a post-Caledonian onset of subsidence. The W-E structural configuration of the sedimentary basins is difficult to reconcile with an earlier proposed NE striking Caledonian branch in the northern Barents Sea. Instead, the orientation of the Olga and Sørkapp Basins lines up with Timanian structural trends from the Pechora Basin. We propose that the Olga and Sørkapp Basins experienced transtensional deformation during the late Devonian/early Carboniferous NE-SW regional extension phase whereby inherited Timanian lineaments controlled the final W-E basin configuration. A salient pre-Caledonian Olga-Sørkapp crustal block in the central Barents Sea would also explain the recently proposed NNW rotation of Caledonian nappes and thrust sheets in the southwestern Barents Sea.

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Apatite (U-Th-Sm)/He thermochronology on the wrong side of the tracks

Green¹,

Duddy²

2018

Chemical Geology

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Thermochronological constraints to late Cenozoic exhumation of the Barents Sea Shelf

Cited by 28 publications

References 29 publications

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

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

The Paleozoic Evolution of the Olga Basin Region, Northern Barents Sea: A Link to the Timanian Orogeny

Apatite (U-Th-Sm)/He thermochronology on the wrong side of the tracks

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