GEOLOGICAL EXPLORATION FOR DEEP-SEA POLYMETALLIC SULPHIDES AT THE AXIAL ZONE OF THE MID-ATLANTIC RIDGE: RESEARCH RESULTS AT THE RUSSIAN EXPLORATION AREA

Author:

Cherkashev G. A.1,Beltenev V. E.2,Egorov I. V.2,Ermakovа L. A.2,Kolchina N. L.2,Kondratenko A. V.2,Firstovа A. V.2,Sotnikova A. S.2

Affiliation:

1. Academician I.S. Gramberg All-Russian Scientific Research Institute for Geology and Mineral Resources of the Ocean (VNIIOkeangeologia); St. Petersburg State University ‒ Institute of Earth Sciences

2. Academician I.S. Gramberg All-Russian Scientific Research Institute for Geology and Mineral Resources of the Ocean (VNIIOkeangeologia)

Abstract

An overview of Russian studies of deep-sea polymetallic sulfides (PМS) in the axial zone of the Mid-Atlantic Ridge (MAR) at the Russian Exploration Area (REA‒PMS) is presented. A brief geological description of the axial zone of the MAR and PMS sites discovered and studied for almost forty years before and after the signing of an exploration contract with the International Seabed Authority in 2012 is given. Information on methods for conducting searches and exploration of PMS, technical equipment, as well as on metallurgical processing of raw materials is presented.

Publisher

P.P. Shirshov Institute of Oceanology, RAS

Reference17 articles.

1. Beltenev, V. E., 2008: Regional works on a scale of 1:500 000‒1 000 000 for deep-sea poly­metallic sulfides (PМS) at the axial zone of the MAR and search works at the Ashadze cluster. JSC “PMGE”, Lomonosov, 1, 205 p.

2. Beltenev, V. E., 2010: Geological and geophysical study in order to identify perspective sites for PMS at the axial zone of the MAR (within 11°‒12 °30 W.) and search work at the site 13°31 W. JSC “PMGRE”, Lomonosov, 1, 263 p.

3. Contract for exploration of the polymetallic sulphides between the International Seabed Authority and the Ministry of Natural Resources and Environtment of the Russian Federation. 2012, ISA Kingston (Jamaica), 48 p.

4. Dmitriev, L. V., A. V. Sobolev, M. G. Reisner, and V. D. Melson, 1990: Petrochemical groups of tempered glasses of the TOR (tholeites of oceanic rifts) and their distribution in the Atlantic and Pacific oceans, Ed. Yu. M. Pushcharovsky, In: Magmatism and ocean tectonics. Moscow, Nauka, 43‒108.

5. Dmitriev, L. V., 1998: Variations of basalt compositions of the Mid-Oceanic ridges as a function of geodynamic environment of their formation. Petrology, 6 (4), 340‒362.

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