...The Summary of Environmental Baseline Survey for Mining the Cobalt-rich Ferromanganese Crust on Deep Seamount in Japan s License Area Teruyoshi Narita, Junya Oshika and Nobuyuki Okamoto Japan Oil, Gas and Metals National Corporation, Minato-ku, Tokyo, Japan ABSTRACT In January 2014, Japan Oil, Gas...

... Abstract In order to explore the change of biogenic Ba content in Pacific Ferromanganese crusts and their relationship with paleoproductivity fluctuations, a thick crust CHA99 from the Magellan Seamounts (MST) has been approached in detail. Studies show the variations of Babio (Ba/Al) , AR...

... for the formation of thick ferromanganese crusts. These areas could be grouped into: Old seamounts (More than 20 million years of age). Areas with a well developed oxygen minimum zone. Areas of strong, oxygen-rich, near-bottom currents, and Areas where seamount flanks are ideally between 500 to 1500m...

... ABSTRACT In order to explore the geochemical characteristics of Mo element in Cobalt-rich crusts and their relationship with paleoceanographic environment variation, 56 crust samples and a thick crust from 7 seamounts in the Magellan Seamounts (MST) have been approached in detail. Studies show...

... cruises with R/V KILO MOANA, a research research vessel based at the University of Hawaii in Honolulu. manganese nodule concentration box core sample seamount metal content nodule size upstream oil & gas seafloor artificial intelligence nodule exploration backscatter value gray...

... Simulation of Motion Performance for a Cobalt Crust Miner on Seamounts Li Li, Shaojun Liu College of Mechanical and Electronic Engineering, Central South University Changsha, Hunan, China Changbin Wu China Ocean Mineral Resources R&D Association Beijing, China Yuqing Gao Changsha Institute...

... ABSTRACT: The abundance of the ferromanganese crusts is basically controlled by the total time lapsed for growth of the crusts and sediment accumulation. Small-scale variation in microtopography and occurrence of hydrogenetic crusts were found in some seamounts with sea-bed photography...

... of phosphatization on chemistry of marine cobalt -rich ferromanganese crusts was studied on a small scale. The interval of subsampleing from top to bottom for a 10-cm thick sample from a Magellan seamount, NW Pacific is 5 mm. The concentration profiles of ore-forming and rare earth elements show that obvious...

... but also for gathering fundamental information about the environmental baseline of cobalt-rich manganese crust distribution area. KEY WORDS: Benthic impact experiment; benthic ecosystem; cobalt-rich manganese deposit; direct destruction; environmental impact; resedimentation; seamount. INTRODUCTION...

... ABSTRACT: The ferromanganese crusts in the central Pacific seamounts have been believed as most abundant and enriched in cobalt according to the earlier studies by the USGS, KORDI, MMAJ and GSJ since 1980's. We investigated the ferromanganese crust areas using a TV camera-monitored drill...

...Proceedings ofThe Fourth (2001) Ocean Mining Symposium Szczecin, Poland, September 23-27, 2001 Copyright © 2001 by The International Society ofOffshore and Polar Engineers ISBN 1-880653-56-7 DIETS: ANew Benthic Impact Experiment on a Seamount T. Ya1lUlZaki Inst. for Marine Resources and Environment...

... island-arc systems. This paper describes more details of seabed occurrences, growth history, geochemical characteristics of hydrogenetic crust and nodule deposits from three model sites; a seamount on the Pacific plate, a subsided submarine volcano in the back are, outcropped deep-sea floor...

... at the Suiyo seamount in the IzuOgasawara Arc, Japan using the Deep-sea Boring Mashine System (BMS) which was developed by the MMAJ. The seamount is located about 24 km northwest of Chichi Island and is characterized by submarine hydrothermal polymetallic mineralization of the back-arc basin type. Three...

... morphotectonic fram~ work with a spreading center intersected by several faults. Samples from active segment of the rift valley and cratered seamount contain evidences of hydrothermal activity in the form of vent like features, and rocks with disseminated and vein type metal sulphides. Rods and lumps of pyrites...

... on inactive seamounts up to 200 km away from the active volcano chain. The thickness of crusts generally increases with increasing distance from the active volcano chain and with increasing age of substrate volcanic rocks, assuming a constant and continuous slow growth. The large variation of thickness...

... multibeam echosounder pseudo sidescan image pseudo sidescan image seamount nodule abundance nodule sidescan image metals & mining seamount chain exploration reservoir characterization indian basin central indian basin abundance manganese nodule exploration seafloor amplitude...

... ABSTRACT: During submersible dives small-scale variability of Mn deposits were described on seamounts in the NW Pacific with reference 10 microtopography and geological evolution. Co-rich hydrogenetic crusts and nodyles occur as large talus deposits on Cretaceous guyots. These are probably...

... Economic Zone of the Cook Islands. and in the mid-Indian Ocean. Rich deposit of metalliferous crusts have been found on seamounts near Minami Torishima Island. Johonston Island.and in republic of the Marshall Islands. Consideration is being given to the options avai- able for recovery of these deposits...

... and design.of mining system ofcobalt-rich manganese deposits on seamounts would be greatly influenced by the distribution characteristics as well as the associated seabed features, such as the seabed topography, surface morphology and sediment characteristics. An example detailed analysis of the distribution...

... flatexcept for the large seamount of height 1200 m which appears on the northernmost part of the area. Also, there are two small abyssal hills in the center of the area. Seafloor slope angles calculated from the water depth data reveal that, the area has predominantly gentle slopes. However, the regions...