The Paleocene–Eocene thermal maximum (PETM) in Svalbard — clay mineral and geochemical signals

Dypvik, Henning; Riber, Lars; Burca, Florin; Rüther, Denise Christina; Jargvoll, David; Nagy, Jenő; Jochmann, Malte

doi:10.1016/j.palaeo.2010.12.025

Cited by 81 publications

(85 citation statements)

References 24 publications

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“…Additionally, the asymmetry of the illite 001 peak (Fig. 6) suggests that this expandable layer clay mineral is an illite-smectite mixed-layer phase (Moore and Reynolds, 1997) and this is in agreement with the interpretation by Dypvik et al (2011) of XRD spectra from core samples from the same formations exposed in the studied catchments. This mixed layer expandable phase will be referred to as "I/S" in the following discussion.…”

Section: Semi-quantitative Clay Abundancesupporting

confidence: 85%

“…The formations exposed in the two catchments have been relatively well studied on account of the fact they cover the Paleocene-Eocene Thermal Maximum (PETM) and formed as a consequence of sedimentation which commenced upon the separation of Greenland from Eurasia (e.g. Helland-Hansen, 1990;Müller and Spielhagen, 1990;Cui et al, 2011;Dypvik et al, 2011;Elling et al, 2016;Jones et al, 2016). The Central Basin sediments are divided into six formations (Major et al, 2000) which were deposited in a series of transgressive-regressive cycles.…”

Section: Geological Backgroundmentioning

confidence: 99%

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Clay mineralogy, strontium and neodymium isotope ratios in the sediments of two High Arctic catchments (Svalbard)

et al. 2018

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Abstract. The identification of sediment sources to the ocean is a prerequisite to using marine sediment cores to extract information on past climate and ocean circulation. Sr and Nd isotopes are classical tools with which to trace source provenance. Despite considerable interest in the Arctic Ocean, the circum-Arctic source regions are poorly characterised in terms of their Sr and Nd isotopic compositions. In this study we present Sr and Nd isotope data from the Paleogene Central Basin sediments of Svalbard, including the first published data of stream suspended sediments from Svalbard.The stream suspended sediments exhibit considerable isotopic variation (εNd = −20.6 to −13.4; 87 Sr / 86 Sr = 0.73421 to 0.74704) which can be related to the depositional history of the sedimentary formations from which they are derived. In combination with analysis of the clay mineralogy of catchment rocks and sediments, we suggest that the Central Basin sedimentary rocks were derived from two sources. One source is Proterozoic sediments derived from Greenlandic basement rocks which are rich in illite and have high 87 Sr / 86 Sr and low εNd values. The second source is Carboniferous to Jurassic sediments derived from Siberian basalts which are rich in smectite and have low 87 Sr / 86 Sr and high εNd values. Due to a change in depositional conditions throughout the Paleogene (from deep sea to continental) the relative proportions of these two sources vary in the Central Basin formations. The modern stream suspended sediment isotopic composition is then controlled by modern processes, in particular glaciation, which determines the present-day exposure of the formations and therefore the relative contribution of each formation to the stream suspended sediment load. This study demonstrates that the Nd isotopic composition of stream suspended sediments exhibits seasonal variation, which likely mirrors longer-term hydrological changes, with implications for source provenance studies based on fixed endmembers through time.

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Section: Semi-quantitative Clay Abundancesupporting

confidence: 85%

Section: Geological Backgroundmentioning

confidence: 99%

Clay mineralogy, strontium and neodymium isotope ratios in the sediments of two High Arctic catchments (Svalbard)

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Additionally, the asymmetry of the illite 001 peak (Fig. 4) suggests that this expandable layer clay mineral is an illite-smectite mixed-layer phase (Moore and Reynolds Jr., 1997) Dypvik et al (2011) of XRD spectra from core samples from the same formations exposed in the studied catchments. This mixed layer expandable phase will be referred to as 'I/S' in the following discussion.…”

Section: Semi-quantitative Clay Abundancementioning

confidence: 99%

Clay mineralogy, strontium and neodymium isotope ratios in the sediments of two High Arctic catchments (Svalbard)

Hindshaw¹,

Tosca²,

Piotrowski³

et al. 2017

Preprint

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Abstract. The identification of sediment sources to the ocean is a pre-requisite to using ocean sediment cores to extract information on past climate and ocean circulation. Sr and Nd isotopes are classical tools with which to trace source provenance.Yet, despite considerable interest in the Arctic Ocean, the circum-Arctic source regions are poorly characterised in terms of their Sr and Nd isotopic compositions. In this study we present Sr and Nd isotope data from the Paleogene Central Basin sediments of Svalbard, including the first published data of river sediments from Svalbard. 5The bulk sediments exhibit considerable isotopic variation (εNd 0 = -24.2 to -11.9; values. Due to a change in deposition conditions throughout the Paleogene (from deep-sea to continental) the relative proportions of these two sources varies in the Central Basin formations. The modern river suspended sediment isotopic composition is then controlled by modern processes, in particular glaciation, which determines the present-day exposure of the formations and therefore the relative contribution of each formation to the suspended sediment load. This study demonstrates that the Sr and Nd isotopic composition of river sediment from the continents exhibits significant seasonal variation, which almost 15 certainly mirrors longer-term hydrological changes, with implications for source provenance studies based on fixed sources through time.

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“…The Palaeogene was the time of intracontinental strike-slip movement between Greenland and Barents Sea shelf, which peaked with the formation of Western Spitsbergen Orogenic Belt and Central Cenozoic Basin in its foreland during the Paleocene and the Eocene (e.g. Steel et al, 1981Steel et al, , 1985Dypvik et al, 2011). It is therefore not impossible that some structural conduits, e.g.…”

Section: Fossil Hydrocarbon Seepage On Spitsbergenmentioning

confidence: 99%

Paleocene methane seep and wood-fall marine environments from Spitsbergen, Svalbard

Hryniewicz

Bitner

Durska

et al. 2016

Palaeogeography, Palaeoclimatology, Palaeoecology

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The Paleocene–Eocene thermal maximum (PETM) in Svalbard — clay mineral and geochemical signals

Cited by 81 publications

References 24 publications

Clay mineralogy, strontium and neodymium isotope ratios in the sediments of two High Arctic catchments (Svalbard)

Clay mineralogy, strontium and neodymium isotope ratios in the sediments of two High Arctic catchments (Svalbard)

Clay mineralogy, strontium and neodymium isotope ratios in the sediments of two High Arctic catchments (Svalbard)

Paleocene methane seep and wood-fall marine environments from Spitsbergen, Svalbard

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