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46 Equatorial Segment of the Mid-Atlantic Ridge E Intergovernmental Oceanographic Commission Technical Series 46

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46 Equatorial Segment of the Mid-Atlantic Ridge E Intergovernmental Oceanographic Commission Technical Series 46 FR9704377 SC-97-WS-7 46 Equatorial Segment of the Mid-Atlantic Ridge IOC Technical Series No. Title Languages 1 Manual on International Oceanographic Data Exchange (out of stock) 2 Intergovernmental Oceanographic Commission (Five years of work) (out of stock) 3 Radio Communication Requirements of Oceanography (out of stock) 4 Manual on International Oceanographic Data Exchange - (out of stock) Second revised edition 5 Legal Problems Associated with Ocean Data Acquisition Systems (out of stock) (ODAS) 6 Perspectives in Oceanography, 1968 (out of stock) 7 Comprehensive Outline of the Scope of the Long-term and Expanded (out of stock) Programme of Oceanic Exploration and Research 8 IGOSS (Integrated Global Ocean Station System) - General Plan (out of stock) Implementation Programme for Phase 1 9 Manual on International Oceanographic Data Exchange - (out of stock) Third Revised Edition 10 Bruun Memorial Lectures, 1971 E, F, S, R 11 Bruun Memorial Lectures, 1973 (out of stock) 12 Oceanographic Products and Methods of Analysis and Prediction E only 13 International Decade of Ocean Exploration (IDOE), 1971-1980 (out of stock) 14 A Comprehensive Plan for the Global Investigation of Pollution in E, F, S, R the Marine Environment and Baseline Study Guidelines 15 Bruun Memorial Lectures, 1975 - Co-operative Study of the Kuroshio (out of stock) and Adjacent Regions 16 Integrated Ocean Global Station System (IGOSS) General Plan E, F, S, R and Implementation Programme 1977-1982 17 Oceanographic Components of the Global Atmospheric Research (out of stock) Programme (GARP) 18 Global Ocean Pollution: An Overview (out of stock) 19 Bruun Memorial Lectures - The Importance and Application (out of stock) of Satellite and Remotely Sensed Data to Oceanography 20 A Focus for Ocean Research: The Intergovernmental Oceanographic (out of stock) Commission - History, Functions, Achievements 21 Bruun Memorial Lectures, 1979: Marine Environment and Ocean E, F, S, R Resources 22 Scientific Report of the Intercalibration Exercise of the (out of stock) IOC-WMO-UNEP Pilot Project on Monitoring Background Levels of Selected Pollutants in Open Ocean Waters (continued on inside back cover) No. Title Languages 23 Operational Sea-Level Stations E, F, S, R 24 Time-Series of Ocean Measurements. Vol. 1 E, F, S, R 25 A Framework for the Implementation of the Comprehensive Plan (out of stock) for the Global Investigation of Pollution in the Marine Environment 26 The Determination of Polychlorinated Biphenyls in Open-ocean Waters E only 27 Ocean Observing System Development Programme E, F, S, R 28 Bruun Memorial Lectures, 1982: Ocean Science for the Year 2000 E, F, S, R 29 Catalogue of Tide Gauges in the Pacific E only 30 Time-Series of Ocean Measurements. Vol. 2 E only 31 Time-Series of Ocean Measurements. Vol. 3 E only 32 Summary of Radiometric Ages from the Pacific E only 33 Time-Series of Ocean Measurements. Vol. 4 E only 34 Bruun Memorial Lectures, 1987: Recent Advances in Selected Areas Composite in the Regions of the Caribbean, Indian Ocean and the Western Pacific E,F,S 35 Global Sea-Level Observing System (GLOSS) Implementation Plan E only 36 Bruun Memorial Lectures 1989: Impact of New Technology on Marine Composite Scientific Research E,F,S 37 Tsunami Glossary - A Glossary of Terms and Acronyms Used in the E only Tsunami Literature 38 The Oceans and Climate: A Guide to Present Needs E only 39 Bruun Memorial Lectures, 1991: Modelling and Prediction in Marine E only Science 40 Oceanic Interdecadal Climate Variability E only 41 Marine Debris: Solid Waste Management Action for the Wider E only Caribbean 42 Calculation of New Depth Equations for Expendable Bathymerographs E only Using a Temperature-Error-Free Method (Application to Sippican/TSK T-7, T-6 and T-4 XBTs) 43 IGOSS Plan and Implementation Programme 1996-2003 E, F, S, R 44 Design and Implementation of some Harmful Algal Monitoring Systems E only 45 Use of Standards and Reference Materials in the Measurement of Chlorinated Hydrocarbon Residues E only 46 Equatorial Segment of the Mid-Atlantic Ridge E Intergovernmental Oceanographic Commission technical series 46 Equatorial Segment of the Mid-Atlantic Ridge Initial Results of the Geological and Geophysical Investigations under the EQUARIDGE Program, Cruises of r/v 'Akademik Nikolaj Strakhov' in 1987,1990, 1991 Editor: G.B. Udintsev UNESCO 1996 sc-9iwsn The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the Secretariats of UNESCO and IOC concerning the legal status of any country or territory, or its authorities, or concerning Ihe delimitations of the frontiers of any country or territory. For bibliographic purposes, this document should be cited as follows: Equatorial Segment of the Mid-Atlantic Ridge IOC Technical Series No. 46, UNESCO 1996 (English) Published in 1996 by the United Nations Educational, Scientific and Cultural Organization 7, place de Fontenoy, 75352 Paris 07 SP Printed in UNESCO's Workshops © UNESCO 1996 Printed in France TABLE OF CONTENTS Page Abstract (iv) Acknowledgements (iv) Introduction G.B. Udintsev, J. Makris 1 Chapter 1 - Features of the Topography of the Ocean Floor in the Equatorial Atlantic. G.B. Udintsev Chapter 2 - Topography of the Equatorial Segment of the Mid-Atlantic Ridge After Multi-Beam Echo-sounding. G.B. Udintsev, J. Hall, V.G. Udintsev, A.B. Knjazev Chapter 3 - Topography of the Rift Zone and Some Parts of the Fracture Zones in the Equatorial Segment. G.V. Agapova 15 Chapter 4 - The Structure of Sedimentary Cover from Single-Channel Seismic Profiling Data. V.N. Efimov, A.V. Koltsova, A.F. Beresnev, V.M. Golod, S. Yu. Sokolov, M.V.Sakharov 19 Chapter 5 - Tectonics Deformations within the Mid-Atlantic Ridge and a model of their genesis. M.P. Antipov 25 Chapter 6 - The Crustal Structure and Seismicity of the Equatorial Segment in the Strakhov and St. Peter Fracture Zones Area. M.V. Zakharov, B.N. Grinko, J. Makris, U. Vogt, T. Funk 27 Chapter 7 - Structure of the Sierra Leone Rise on the Eastern Flank of the Equatorial Segment and Guinea Plateau of the Continental Margin of West Africa. A. Ju. Yunov et. al. 29 Chapter 8 - Gravity Field of the Equatorial Segment. V.M. Golod 39 Chapter 9 - Manifestation of Tectonic and Petrochemical Segmentation during the Development of the Equatorial Zone of the Mid-Atlantic Ridge. N.A. Sushchevskaja, L.P. Volokitina, M.M. Morozova, M.M. Fuguan 45 Chapter 10 - Igneous Rocks from the Equatorial Atlantic. P.I. Fedorov, B.P. Zolotarev, V.A. Gutsaki 49 Chapter 11 - Magmatic Basement of the Equatorial Segment. N.A. Kurentsova, V.M. Tchubarov 56 Chapter 12 - Ultrabasic Mylonites of St. Paul Island. E. A. Denisova 58 Chapter 13 - Native Metals in the San Paulo Fault Basalts of the Atlantic Ocean. L.E. Shterenberg et. al. 61 Chapter 14 - New Data of Pleistocene Stratigraphy and Paleoceanology of the Equatorial Atlantic. N.S. Oskina, O.V. Dmitrenko 65 Chapter 15 - Rocks with Anomalous Age or Origin in the Equatorial Atlantic - Review. I. A. Basov 69 Chapter 16 - Finds of Rocks of Continental Type and Sediments of Anomalous Age on the Equatorial Segment of the Mid-Atlantic Ridge (MAR). G.B. Udintsev, N.A. Kurentsova, N.V. Pronina, S.B. Smirnova, M.G. Ushakova 76 (ii) Chapter 17- Phyllites of the Equatorial Segment of the Mid-Atlantic Ridge. AN. Fenogenov 79 Chapter 18 - Plutonic and Metamorphic Rocks in the Crestal Zone of the Mid-Atlantic Ridge: on the Problem of Composition and Age of the Lower Horizons of the Oceanic Crust. A.I. Trukhalev, Ju. E. Pogrebitskij, B.V. Belyatskij, N.A. Kurentsova, I.M. Vasilieva. 81 Chapter 19 The Structure and Composition of a Coal Shale Fragment from the Equatorial Atlantic. L.E. Shterenberg, R.N. Smirnov, A.P. Sokolova 87 Chapter 20 Relics of Continental Lithosphere in the Atlantic by Data of (Th/U)Th, (Th/U)Pb and K/Ti Systematics. N.A. Titayeva, Yu. V. Mironov 89 Chapter 21 Residual Peridotites from the 15-20 Mid-Atlantic Fracture Zone - A Possible Analogy of the Ancient Metasomotized Mantle below St. Paul Rocks. S.A. Silantyev, L.V. Dmitriev, B.A. Bazilev, L.K. Levsky, J.F. Casey, H. Bougault 95 Chapter 22 The Origin and the History of the Development of the Equatorial Segment of the Mid-Atlantic Ridge. G.B. Udintsev 99 Conclusion - Segmentation of the Mid-oceanic Ridges and Heterogeneity of the Ocean Floor. G. B. Udinstev 107 References 110 Appendices Contained in the Atlas "Equatorial Segment of the Mid-Atlantic Ridge, Maps and Profiles" Introductory Section Plate 1 Topography of the Equatorial Segment of the Mid-Atlantic Ridge 2 Contents and R/V "Akademik Nikolaj Strakhov" Tracks of 7, 11,12 Cruises General Scheme 3 Equatorial Atlantic. Bathymetric Map (Fragments of GEBCO Sheets 5.08 and 5.12). Tectonic Scheme 4 Topography of the Equatorial Segment of the Mid-Atlantic Ridge 5 Bottom Surface Inclination 6 Bottom Topography. 12th Cruise of R/V "Akademik Nikolaj Strakhov". Polygon 7 Bottom Topography. 12th Cruise of R/V "Akademik Nikolaj Strakhov". Polygon 8 Map of the thickness of Sedimentary Cover. St. Paulo Fracture Zone 9 Acoustic Basement Topography 10 Acoustic Basement Morpho-structural Scheme Ocean Floor Morpho-structural Scheme 11 Satellite Free Air Gravity Anomaly Map and Ship-Born Free Air Gravity Anomaly Map 12 Mantle Bouger Gravity Anomaly. Bouger Gravity Anomaly 13 Deep Seismic Profiling Reflection and Refraction. Position of Seismic Reflection and Refraction Profile in St. Peter Fracture Zone. Strakhov Fracture Zone Intersection with Southern Rift. 3D Simulation. 14 Ocean Bottom Seismographs Records. Earthquake Epicenters in the Strakhov Fracture Zone Intersection with the Northern Rift. Hypocenter Depth and Earthquake. Magnitude in the Strakhov Fracture Zone Intersection with the Northern Rift.
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