Sedimentary infill in the equatorial Mid-Oceanic Canyon, Atlantic Ocean


Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

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

Supplementary files

Supplementary Files
Action
1. JATS XML

Copyright (c) 2017 Pleiades Publishing, Inc.