Sedimentary infill in the equatorial Mid-Oceanic Canyon, Atlantic Ocean
- Authors: Simagin N.V.1,2, Murdmaa I.O.1, Seitkalieva E.A.1, Borisov D.G.1, Dorokhova E.V.3,4, Emel’yanov E.M.3, Levchenko O.V.1
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Affiliations:
- Shirshov Institute of Oceanology
- Faculty of Geology
- Atlantic Branch, Shirshov Institute of Oceanology
- Baltic State University
- Issue: Vol 52, No 6 (2017)
- Pages: 427-434
- Section: Article
- URL: https://journals.rcsi.science/0024-4902/article/view/162583
- DOI: https://doi.org/10.1134/S0024490217060104
- ID: 162583
Cite item
Abstract
Facts confirming the hypothesis of contourite sediment infill of the Equatorial Mid-Ocean Canyon (EMOC) are presented. We examined two cores recovered in Cruises 37 and 43 of the R/V Akademik Ioffe (2012, 2013). The cores recovered upper Quaternary miopelagic clays on the EMOC floor (AI-3149) and the adjacent abyssal plain (AI-2620). The study of these cores unraveled significant differences in their composition. In contrast to the lithologically homogeneous Core AI-2620, Core AI-3149 includes interlayers enriched in the biogenic CaCO3, terrigenous silt, and authigenic ferromanganese micronodules. These peculiarities are attributed to activity of the Antarctic Bottom Water (AABW) contour currents along the EMOC.
About the authors
N. V. Simagin
Shirshov Institute of Oceanology; Faculty of Geology
Author for correspondence.
Email: morskoylitolog@gmail.com
Russian Federation, Nakhimovskii pr. 36, Moscow, 117997; Leninskie gory 1, Moscow, 119991
I. O. Murdmaa
Shirshov Institute of Oceanology
Email: morskoylitolog@gmail.com
Russian Federation, Nakhimovskii pr. 36, Moscow, 117997
E. A. Seitkalieva
Shirshov Institute of Oceanology
Email: morskoylitolog@gmail.com
Russian Federation, Nakhimovskii pr. 36, Moscow, 117997
D. G. Borisov
Shirshov Institute of Oceanology
Email: morskoylitolog@gmail.com
Russian Federation, Nakhimovskii pr. 36, Moscow, 117997
E. V. Dorokhova
Atlantic Branch, Shirshov Institute of Oceanology; Baltic State University
Email: morskoylitolog@gmail.com
Russian Federation, pr. Mira 1/3, Kaliningrad, 236022; ul. Nevskogo 14, Kaliningrad, 236016
E. M. Emel’yanov
Atlantic Branch, Shirshov Institute of Oceanology
Email: morskoylitolog@gmail.com
Russian Federation, pr. Mira 1/3, Kaliningrad, 236022
O. V. Levchenko
Shirshov Institute of Oceanology
Email: morskoylitolog@gmail.com
Russian Federation, Nakhimovskii pr. 36, Moscow, 117997
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