Constraining depositional models in the Barents Sea region using detrital zircon U–Pb data from Mesozoic sediments in Svalbard

Bue, Edina Pózer; Andresen, Arild

doi:10.1144/sp386.14

Cited by 37 publications

(59 citation statements)

References 98 publications

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“…We have not identified an obvious source in the Arctic, but these ages are also found in modern sands of the Ob and Yenisey Rivers of western Siberia (Safonova et al, 2010). The next peak is centered at 1153 Ma, and, although small (5% of the distribution), it is important because zircons of this age are common in the Grenville orogen of Laurentia and Baltica (Rainbird et al, 1992;Mosher, 1998;Tollo et al, 2004;Li et al, 2007;Gasser and Andresen, 2013;Pózer Bue and Andresen, 2013), Severnaya Zemlya (Lorenz et al, 2008), and Novaya Zemlya (Lorenz et al, 2013) but are rare in Siberia and are absent from our Late Jurassic samples from the South Anyui suture zone (Fig. 15).…”

Section: Chukotka Triassic Passive-margin Stratamentioning

confidence: 76%

Tectonic evolution of the Mesozoic South Anyui suture zone, eastern Russia: A critical component of paleogeographic reconstructions of the Arctic region

et al. 2015

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The South Anyui suture zone consists of late Paleozoic-Jurassic ultramafic rocks and Jurassic-Cretaceous pre-, syn-, and postcollisional sedimentary rocks. It represents the closure of a Mesozoic ocean basin that separated two microcontinents in northeastern Russia, the Kolyma-Omolon block and the Chukotka block. In order to understand the geologic history and improve our understanding of Mesozoic paleogeography of the Arctic region, we obtained U-Pb ages on pre-and postcollisional igneous rocks and detrital zircons from sandstone in the suture zone. We identified four groups of sedimentary rocks: (1) Triassic sandstone deposited on the southern margin of Chukotka;(2) Middle Jurassic volcanogenic sandstone that was derived from the Oloy arc, a continental margin arc, along the Kolyma-Omolon block, south of the Anyui Ocean, a sample of which yielded no pre-Jurassic zircons and a single peak at 164 Ma; (3) suture zone sandstone that yielded Late Jurassic maximum depositional ages and likely predated the collision; and (4) a Mid-Cretaceous syncollisional sandstone that had a maximum depositional age of 125 Ma. These rocks were intruded by postkinematic plutons and dikes with ages of 109 Ma and 101 Ma that postdate the collision. We present a seismic-reflection line through the South Anyui suture zone that indicates south-vergence of thrusting of the Chukotka block over the Kolyma-Omolon block, opposite of most existing models and opposite of the vergence in the Angayucham suture zone, the postulated along-strike equivalent in Alaska. This suggests that Chukotka and Arctic Alaska may have different pre-Cretaceous histories, which could solve space problems with existing reconstructions of the Arctic region. We combine our detrital zircon data and interpretations of the seismic line to construct a new GPlates model for the Mesozoic evolution of the region that decouples Chukotka and Arctic Alaska to solve space problems with previous Arctic reconstructions.

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Section: Chukotka Triassic Passive-margin Stratamentioning

confidence: 76%

Tectonic evolution of the Mesozoic South Anyui suture zone, eastern Russia: A critical component of paleogeographic reconstructions of the Arctic region

et al. 2015

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“…Overall, the southern Barents Sea Basin subsided through the remainder of the Triassic and was infilled by several kilometers of sediment of the Klappmyss, Kobbe, and Snadd Formations, mainly derived from the Uralian orogen and Kara Sea (Fig. 3;Glørstad-Clark et al, 2010;Henriksen et al, 2011a;Pózer Bue and Andresen, 2014;Klausen et al, 2015). After the arrival of the easterly derived Uralian system on the Finnmark Platform, the southerly system cannot be identified in seismic data.…”

Section: Geological Backgroundmentioning

confidence: 99%

Linking an Early Triassic delta to antecedent topography: source-to-sink study of the southwestern Barents Sea margin

Eide¹,

Klausen²,

Katkov³

et al. 2019

Preprint

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Present-day catchments adjacent to sedimentary basins may preserve geomorphic elements that have been active through long intervals of time. Relicts of ancient catchments in present-day landscapes may be investigated using mass-balance models andcan give important information about upland landscape evolution and reservoir distribution in adjacent basins. However, such methods are in their infancy and are often difficult to apply in deep-time settings due to later landscape modification.The southern Barents Sea margin of N Norway and NW Russia is ideal for investigating source-to-sink models, because it has been subject to minor tectonic activity since the Carboniferous, and large parts have eluded significant Quaternary glacial erosion. A zone close to the present-day coast has likely acted as the boundary between basin and catchments since the Carboniferous. Around the Permian-Triassic transition, a large delta system started to prograde from the same area as the present-day largest river in the area, the Tana River, which has long been interpreted to show features indicating that it was developed prior to present-day topography. We performed a source-to-sink study of this ancient system in order to investigate potential linkages between present-day geomorphology and ancient deposits.We investigated the sediment load of the ancient delta using well, core, twodimensional and three-dimensional seismic data, and digital elevation models to investigate the geomorphology of the onshore catchment and surrounding areas. Our results imply that the present-day

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“…Late Permian‐Early Triassic rifting is controversially discussed in the western Barents Sea. While some authors claim that the Triassic was a tectonically quiet period, particularly in the northern Barents Sea and Svalbard region (Gabrielsen et al, ; Høy & Lundschien, ; Klausen, ; Pózer Bue & Andresen, ; Riis et al, ; Worsley, ), there is evidence for extensional deformation on Svalbard, in the Bjørnøya Basin, and the Fingerdjupet Subbasin (Anell et al, ; Blaich et al, ; Osmundsen et al, ; Serck et al, ). 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, ).…”

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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Constraining depositional models in the Barents Sea region using detrital zircon U–Pb data from Mesozoic sediments in Svalbard

Cited by 37 publications

References 98 publications

Tectonic evolution of the Mesozoic South Anyui suture zone, eastern Russia: A critical component of paleogeographic reconstructions of the Arctic region

Tectonic evolution of the Mesozoic South Anyui suture zone, eastern Russia: A critical component of paleogeographic reconstructions of the Arctic region

Linking an Early Triassic delta to antecedent topography: source-to-sink study of the southwestern Barents Sea margin

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

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