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Sources of paleomagnetic signal in iron-bearing marine sedimentary deposits
- Authors: Rudmin M.A.1, Mazurov A.K.1, Sergienko V.I.2, Savichev O.G.1, Semiletov I.P.1,2
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Affiliations:
- National Research Tomsk Polytechnic University
- Pacific Oceanological Institute, Far Eastern Branch of the Russian Academy of Sciences
- Issue: Vol 486, No 1 (2019)
- Pages: 53-56
- Section: Chemistry
- URL: https://journals.eco-vector.com/0869-5652/article/view/13182
- DOI: https://doi.org/10.31857/S0869-5652486153-56
- ID: 13182
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Abstract
This paper presents the results of interpreting the change in the magnetic signal of ferruginous marine sedimentary rocks using the example of the Cretaceous-Paleogene Bakchar deposit (Western Siberia). Anomalous magnetic susceptibility (MS) values are determined by two factors: (a) a diagenetic process accompanied by the formation of pyrrhotite, greigite and siderite in ironstones, (b) an increase detrital input with deposition of magnetite and ilmenite in the siltstones on the background of climate moistening and intense weathering. It is shown that increased MS values in iron-bearing marine sedimentary deposits can be associated with the formation of ferrimagnetic sulfides, which indicates to the methane emission through ancient marine bottom sediments.
About the authors
M. A. Rudmin
National Research Tomsk Polytechnic University
Author for correspondence.
Email: rudminma@tpu.ru
Russian Federation, 30, Lenin Avenue,Tomsk, 634034
A. K. Mazurov
National Research Tomsk Polytechnic University
Email: rudminma@tpu.ru
Russian Federation, 30, Lenin Avenue,Tomsk, 634034
V. I. Sergienko
Pacific Oceanological Institute, Far Eastern Branch of the Russian Academy of Sciences
Email: rudminma@tpu.ru
Academician of the RAS
Russian Federation, 43, Baltiyskaya Street, Vladivostok, 690041O. G. Savichev
National Research Tomsk Polytechnic University
Email: rudminma@tpu.ru
Russian Federation, 30, Lenin Avenue,Tomsk, 634034
I. P. Semiletov
National Research Tomsk Polytechnic University; Pacific Oceanological Institute, Far Eastern Branch of the Russian Academy of Sciences
Email: rudminma@tpu.ru
Correspondent member of RAS
Russian Federation, 30, Lenin Avenue,Tomsk, 634034; 43, Baltiyskaya Street, Vladivostok, 690041References
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