Applying the anisotropy of magnetic susceptibility technique to the study of the tectonic evolution of the West Spitsbergen Fold-and-Thrust Belt

Dudzisz, Katarzyna; Szaniawski, Rafał; Michalski, Krzysztof; Manby, Geoffrey

doi:10.3402/polar.v35.31683

Cited by 8 publications

(3 citation statements)

References 42 publications

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“…The preliminary results of the anisotropy of magnetic susceptibility (AMS) from Hornsund area are consistent with an orthogonal convergence model for the Eurekan WSFTB (Dudzisz et al 2016). In the same area, however, rotations of Carboniferous palaeomagnetic directions around a vertical axis were also observed (Lewandowski et al 2005).…”

Section: Geological Setting and Samplingsupporting

confidence: 72%

Palaeomagnetic, rock-magnetic and mineralogical investigations of the Lower Triassic Vardebukta Formation from the southern part of the West Spitsbergen Fold and Thrust Belt

et al. 2018

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Magnetic, petrological and mineralogical data from 13 sites (99 independently oriented samples) of the Lower Triassic rocks located in the SW segment of the West Spitsbergen Fold and Thrust Belt (WSFTB) are presented in order to identify the ferrimagnetic carriers and establish the origin of the natural remanent magnetization (NRM). Volcanic lithoclasts and other detrital resistive grains in which the primary magnetization might endure are present in some samples. On the other hand, petrological studies indicate that sulphide remineralization could have had an important influence on the remagnetization of these rocks. The dominant ferrimagnetic carriers are titanomagnetite and magnetite. While the titanomagnetite may preserve the primary magnetization, the magnetite is a more likely potential carrier of secondary overprints. The complex NRM patterns found in most of the samples may be explained by the coexistence and partial overlapping of components representing different stages of magnetization. Components of both polarities were identified in the investigated material. The reversal test performed on the most stable components that demagnetized above 300°C proved to be negative at the 95% confidence level at any stage of unfolding. They are better grouped, however, after 100% tectonic corrections and the most stable components are clustered in high inclinations (c. 70–80°). This suggests that at least part of the measured palaeomagnetic vectors represent a secondary prefolding magnetic overprint that originated in post-Jurassic time before the WSFTB event. Vitrinite reflectance studies show these rocks have not been subjected to any strong heating (<200°C).

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Section: Geological Setting and Samplingsupporting

confidence: 72%

Palaeomagnetic, rock-magnetic and mineralogical investigations of the Lower Triassic Vardebukta Formation from the southern part of the West Spitsbergen Fold and Thrust Belt

et al. 2018

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“…The anisotropy of magnetic susceptibility measurements were carried out before the demagnetization procedures for the relevant samples. The data on the anisotropy of magnetic susceptibility can serve as a useful tool to reconstruct the depositional environment (Dudzisz et al 2016) because the minimum values along the vertical axis indicate calm sedimentary conditions.…”

Section: Methodsmentioning

confidence: 99%

“…The data on the anisotropy of magnetic susceptibility can serve as a useful tool to reconstruct the depositional environment (Dudzisz et al . 2016) because the minimum values along the vertical axis indicate calm sedimentary conditions.…”

Section: Methodsmentioning

confidence: 99%

Impact of climate change on sedimentation processes in the eastern Gulf of Finland during the Middle to Late Holocene

Ryabchuk

Sergeev

Prishchepenko

et al. 2020

Boreas

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This paper presents the results of high‐resolution sedimentological analyses of sediment cores from the eastern Gulf of Finland (Baltic Sea). Sampling sites in the periphery of sedimentary basins were selected on the basis of acoustic profiling analyses. The research allowed tracing of the transition from the freshwater Ancylus Lake to the Littorina Sea. A specific transitional layer of ‘blue clays’, indicating the first stage of brackish water inflow into the Gulf of Finland, was dated to 9.1 ka BP. The date of first appearance of Littorina silty clay sedimentation was as follows: from 8.0 ka BP near Gogland Island, from 7.0 ka BP near Moshchny Island and from 5.9 ka BP near the Berezovye Islands. Holocene cycles of hypoxia, associated with periods of warming, were identified and cycles of ‘warming – transgression – anoxic conditions’ and ‘cooling – regression – oxygen‐rich conditions’ were revealed. During the first stage of Littorina transgression (8.0–7.0 ka BP), the near‐bottom environment in the deepest sedimentary basin of the eastern Gulf of Finland was characterized by oxygen deficiency. In contrast, 7.0–6.0 ka BP was dominated by oxygen‐rich conditions and active processes of bioturbation. Anoxic conditions occurred again from 6.0–4.8 ka BP (Holocene Climatic Optimum), resulting in the accumulation of undisturbed silty clays with subhorizontal lamination. The interval from 4.8–2.0 ka was then characterized by oxygen‐rich near‐bottom conditions favourable for benthic organisms. The grain‐size distributions throughout the sediment cores from the easternmost sedimentary basins suggest a relative lowering of the sea level from 3.5–1.8 ka and a rise after 1.8 ka BP.

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Advanced ferrogels with high magnetic response and wear resistance using carbon nanotubes

Awasthi

Gaur

Bobji

2020

Journal of Alloys and Compounds

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Applying the anisotropy of magnetic susceptibility technique to the study of the tectonic evolution of the West Spitsbergen Fold-and-Thrust Belt

Cited by 8 publications

References 42 publications

Palaeomagnetic, rock-magnetic and mineralogical investigations of the Lower Triassic Vardebukta Formation from the southern part of the West Spitsbergen Fold and Thrust Belt

Palaeomagnetic, rock-magnetic and mineralogical investigations of the Lower Triassic Vardebukta Formation from the southern part of the West Spitsbergen Fold and Thrust Belt

Impact of climate change on sedimentation processes in the eastern Gulf of Finland during the Middle to Late Holocene

Advanced ferrogels with high magnetic response and wear resistance using carbon nanotubes

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