Petrography and geochemistry of siliciclastic rocks from the Central Tertiary Basin of Svalbard - implications for provenance, tectonic setting and climate

Schlegel, Andreas; Lisker, Frank; Dörr, Nina; Jochmann, Malte; Schubert, Karsten; Spiegel, Cornelia

doi:10.1127/1860-1804/2013/0012

Cited by 5 publications

(3 citation statements)

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“…In contrast, contamination by detrital zircons during deposition or diagenesis could also lead to elevated Zr concentrations of the bentonites. However, the interlayered sandstones of the Basilika Formation have up to tenfold lower Zr concentrations (Schlegel et al, 2013), which are well within the range commonly observed for sedimentary rocks and upper continental crust (Taylor and McLennan, 1985). A detrital origin of the high Zr concentrations in the <2 µm fractions would thus require extraordinarily strong, selective enrichment of zircon in this size class, which is not commonly observed during diagenesis of sedimentary and magmatic rocks (González López et al, 2005;Taboada et al, 2006;Cavalcante et al, 2014).…”

Section: Geochemical and Isotopic Characterization Of The Basilika Fomentioning

confidence: 75%

“…Subsequently, the volcanic glass and the less stable minerals were transformed to clay and other minerals. Finally, the volcanic ashes may have been altered by diagenesis at a burial depth of up to 2 km, which was followed by Neogene uplift and exhumation as well as recent weathering (Blythe and Kleinspehn, 1998;Dörr et al, 2013;Schlegel et al, 2013). During all of these phases, ions may have been exchanged with the surrounding rocks and water, thus altering the original geochemical fingerprint.…”

Section: Geochemical and Isotopic Characterization Of The Basilika Fomentioning

confidence: 99%

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Origin of Bentonites and Detrital Zircons of the Paleocene Basilika Formation, Svalbard

et al. 2016

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The Paleocene was a time of transition for the Arctic, with magmatic activity of the High Arctic Large Igneous Province (HALIP) giving way to magmatism of the North Atlantic Large Igneous Province in connection to plate tectonic changes in the Arctic and North Atlantic. In this study we investigate the Paleocene magmatic record and sediment pathways of the Basilika Formation exposed in the Central Tertiary Basin of Svalbard. By means of geochemistry, Sm-Nd isotopic signatures, and zircon U-Pb geochronology we investigate the characteristics of several bentonite layers contained in the Basilika Formation, as well as the provenance of the intercalated clastic sediments. Our data show that the volcanic ash layers of the Basilika Formation, which were diagenetically altered to bentonites, originate from alkaline continental-rift magmatism such as the last, explosive stages of the HALIP in North Greenland and the Canadian Arctic. The volcanic ash layers were deposited on Svalbard in a flat shelf environment with dominant sediment supply from the east. Dating of detrital zircons suggests that the detritus was derived from Siberian sources, primarily from the Verkhoyansk Fold-and-Thrust Belt, which would require transport over ∼3000 km across the Arctic.

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Section: Geochemical and Isotopic Characterization Of The Basilika Fomentioning

confidence: 75%

Section: Geochemical and Isotopic Characterization Of The Basilika Fomentioning

confidence: 99%

Origin of Bentonites and Detrital Zircons of the Paleocene Basilika Formation, Svalbard

et al. 2016

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“…The sandstones of the Battfjellet and Aspelintoppen formations are generally poorly sorted lithic greywackes with a large fraction of rock fragments and organic matter (Helland‐Hansen, 2010; Mansurbeg et al., 2012; Nysæther, 1966; Schlegel et al., 2013). The sand grain‐size is typically not coarser than medium with very fine‐grained sands constituting the volumetrically most important sand‐fraction caliber (cf.…”

Section: Introductionmentioning

confidence: 99%

The Svalbard Eocene‐Oligocene (?) Central Basin succession: Sedimentation patterns and controls

Helland‐Hansen

Grundvåg

2020

Basin Research

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A synthesis has been undertaken based on regionally compiled data from the post early Eocene foreland basin succession of Svalbard. The aim has been to generate an updated depositional model and link this to controlling factors. The more than kilometer thick progradational succession includes the offshore shales of the Gilsonryggen Member of the Frysjaodden Formation, the shallow marine sandstones of the Battfjellet Formation and the predominantly heterolithic Aspelintoppen Formation, together recording the progressive eastwards infill of the foredeep flanking the West Spitsbergen fold‐and‐thrust belt. Here we present a summary of the paleo‐environmental depositional systems across the basin, their facies and regional distribution and link these together in an updated depositional model. The basin‐margin system prograded with an ascending shelf‐edge trajectory in the order of 1°. The basin fill was bipartite, with offset stacked shelf and shelf‐edge deltas, slope clinothems and basin floor fans in the western and deepest part and a simpler architecture of stacked shelf‐deltas in the shallower eastern part. We suggest a foredeep setting governed by flexural loading, likely influenced by buckling, and potentially developing into a wedge top basin in the mature stage of basin filling. High‐subsidence rates probably counteracted eustatic falls with the result that relative sea‐level falls were uncommon. Distance to the source terrain was small and sedimentation rates was temporarily high. Time‐equivalent deposits can be found outbound of Stappen High in the Vestbakken Volcanic Province and the Sørvestsnaget Basin 300 km further south on the Barents Shelf margin. We cannot see any direct evidence of coupling between these more southerly systems and the studied one; southerly diversion of the sediment‐routing, if any, may have taken place beyond the limit of the preserved deposits.

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Ecology of peatland testate amoebae in Svalbard and the development of transfer functions for reconstructing past water-table depth and pH

Sim

Swindles

Morris

et al. 2021

Ecological Indicators

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Petrography and geochemistry of siliciclastic rocks from the Central Tertiary Basin of Svalbard - implications for provenance, tectonic setting and climate

Cited by 5 publications

References 0 publications

Origin of Bentonites and Detrital Zircons of the Paleocene Basilika Formation, Svalbard

Origin of Bentonites and Detrital Zircons of the Paleocene Basilika Formation, Svalbard

The Svalbard Eocene‐Oligocene (?) Central Basin succession: Sedimentation patterns and controls

Ecology of peatland testate amoebae in Svalbard and the development of transfer functions for reconstructing past water-table depth and pH

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