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  • IMMS
    Assessment Of The Rehabilitation Of The Seabed Following Marine Aggregate Dredging

    By S. E. Boyd

    Studies of benthic recolonization following the cessation of dredging in U.K. waters and elsewhere are limited, and are largely confined to experimental circumstances. Investigations of the physical

    Jan 1, 2004

  • IMMS
    The Campbell Ferromanganese Nodule Field (SW Pacific Ocean) Formed Beneath The Deep Western Boundary Current: An Important Source Of Paleo-Environmental And Chronostratigraphic Information

    An extensive ferromanganese nodule field south of New Zealand (Fig. 1) has existed beneath the flow of the Deep Western Boundary Current (DWBC) and Antarctic Circumpolar Current (ACC) for at least the

    Jan 1, 2003

  • IMMS
    Polymetallic Sulfide Formation And Gold Enrichment On Hydrothermal Vents Of Pacific Seamounts

    By Alexander Malahoff

    Mineral zonation studies were conducted on hydrothermal vents of two hot spot volcanoes. One study site is located within the Axial Caldera of the axial hot spot volcano of the Juan de Fuca Ridge. The

    Jan 1, 1988

  • IMMS
    Resource Estimation of Co-Rich Ferromanganese Crust Deposits: Bathymetric and Economic Considerations

    By Peter E. Halbach, Andreas Jahn

    "Co-rich ferromanganese crust deposits exist on slopes, summits and platforms of seamounts and guyots throughout the global oceans, where deep-sea currents have kept the seafloor structures more or le

    Jan 1, 2017

  • IMMS
    Seamount-Scale Controls on Ferromanganese Crust Geochemistry: Tropic Seamount, NE Atlantic

    By C. R. Pearce, B. Murton, S. Howarth, P. Lusty

    "With the expansion of “green” energy technologies, the demand for the critical raw materials required to sustain this growth is increasing. Many E-tech elements, including tellurium (Te) and rare ear

    Jan 1, 2017

  • IMMS
    Phase Composition of Gold from Massive Sulfides of the Semenov-2 Hydrothermal Field (13º31.13´N), Mid-Atlantic Ridge ? Introduction

    By I. Yu. Melekestseva

    The Semenov hydrothermal sulfide cluster (13º31´N), consisted of five fields (Semenov-1, -2, -3, -4, and -5), was discovered in 2007 in the 30th cruise of R/V Professor Logatchev [Beltenev et al., 200

    Jan 1, 2010

  • IMMS
    Rovdrill® - The Development and Application of a New ROV Operated Seabed Drilling and Coring System

    By Allan Spencer

    In March 2007, Nautilus Minerals Inc. announced that they had commenced their 2007 exploration and development program with the mobilization of the Research Vessel Wave Mercury and the Survey Vessel A

  • IMMS
    Development of Equipment for Reconnaissance Level Detection and Confirmation of Deepwater Massive Sulfide Deposits

    By Will Roberts, M. E. Williamson

    After verification of methodology and testing of prototype systems during 2005/06, Nautilus Minerals expanded their Papua New Guinea (PNG) operations to a full commercial exploration program in 2007

  • IMMS
    PROD – A “Swiss Army® Knife” for Deepwater Exploration

    By Alan Foley

    The Portable Remote Operated Drill was developed in Sydney, Australia in the 1990’s. The device is a platform for many in-situ seabed sampling and coring tasks. The range of tools developed for use in

    Sep 24, 2006

  • IMMS
    Recommendations for a High Seas Conservation Issue Concerning the Polymetallic Nodule Ecosystem of the Eastern Equatorial Pacific Ocean

    By Virginie Tilot de Grissac

    This project funded by Government of Flanders (Belgium) and coordinated by the Intergovernmental Oceanographic Commission proposes to draw recommendations for conservation of the biodiversity and fo

    Aug 24, 2006

  • IMMS
    Distal Metalliferous Sediments and Search of Underwater Hydrothermal Deposits

    By Evgeny G. Gurvich

    While direct study of high temperature hydrothermal activity and the associated mineral formation as well as study of their scales are possible in the modern ocean, researchers are deprived of such

    Aug 24, 2006

  • IMMS
    Eastern English Channel Broadscale Mapping

    By Sally Philpot, Siân E. Boyd, Hubert L. Rees, Emma Bee, Carla Houghton, Ceri James, Silvana N. R. Birchenough, S. Limpenny David, A. Coggan1 Roger, Koen Vanstaen

    Every year approximately 22 million tonnes of marine sand and gravel are dredged form British waters. The eastern English Channel (EEC) contains substantial reserves, a proportion of which have been

    Sep 24, 2006

  • IMMS
    Search for Sediment-hosted Seafloor Polymetallic Sulfides: What Are We Doing Wrong?

    By Timothy F. McConachy, Christopher J. Yeats, Ray Binns

    Various kinds of sediment-hosted polymetallic sulfide deposit are known on land in ancient marine sequences, many tending to be larger and more valuable than massive sulfide deposits genetically ass

    Aug 24, 2006

  • IMMS
    Reconsideration of Fine-scale Dating of Ferromanganese Crusts for More Reliable Microstratigraphic Correlation

    By H. Oda, L. E. Fong, K. K. McBride, B. P. Weiss, F. J. Baudenbacher, A. Usui

    Fine-scale dating is a key parameter in characterizing the growth history of hydrogenetic ferromanganese crusts. We once compared several dating methods, micropaleontological (calcareous nanofossil),

    Aug 24, 2006

  • IMMS
    Application Of High Resolution Element Analysis Of N-E Pacific Sediments

    By In Kwon Um

    The XRF Core-Scanner system performs non-destructive analysis of elements from Mg to U, in concentrations of ppm levels on split cores with digital images. Using the AVAATECH XRF Corescanner system, w

    Jan 1, 2011

  • IMMS
    Orebody Characterization And Resource Management At De Beers Marine

    By Ian B. Corbett

    De Beers Marine Pty Ltd. (South Africa) (DEBMARINE), a wholly owned subsidiary of De Beers Consolidated Mines Ltd. specializes in the provision of contracting and consulting services for offshore diam

    Jan 1, 1998

  • IMMS
    A Half-Century of Marine Placer Mining Viewed in Hindsight

    By Richard H. T. Garnett

    The first, profitable, marine placer mining started with tin 100 years ago but no major industry developed until the mid-20th. Century. Dredging at sea yielded cassiterite in both South Thailand and

    Aug 24, 2006

  • IMMS
    First Australian Offshore Mineral Locations Map

    By Yanis Miezitis, Gerald Mueller, Timothy F. McConachy, Ronald G. Sait, Keith R. Porritt, William J. McKay

    In November 2004, Australia lodged with the United Nations Commission on the Limits of the Continental Shelf possible new maritime boundaries in relation to Australia’s continental shelf extending b

    Aug 24, 2006

  • IMMS
    Exploration and Estimation of Gravel Resource Potential in Southeast Chukchi Sea Continental Shelf Off Kivalina, Alaska

    By S. Naidu, J. Kelley, Roger Amato

    The Alaskan Continental Shelf covers 76 % of the total shelf area of the United States. There are a lot of potential gravel deposits in the Alaskan offshore region. The gravel resources are currentl

  • IMMS
    New Approaches To Marine Diamond Exploration And Mining

    By Mike Woodborne

    The marine diamond industry off south-western Africa is maturing rapidly. Some of the larger explorers have reached an advanced stage in their resource development and new mining operations have been

    Jan 1, 1998