MINDeSEA WP6 Polymetallic Nodules (Point)
Polymetallic nodules occur in abyssal plains (~4000 – 6000 mm water depth) of all major oceans as two-dimensional deposits, formed on or just below sediment-covered seafloor, rich in metals of economic interest such as manganese (Mn), nickel (Ni), copper (Cu), cobalt (Co), molybdenum (Mo), titanium (Ti), lithium (Li), and rare earth elements (REE). The nodules are generated in marine environments where the sedimentation rates are low, commonly less than 10 centimeters (cm) per thousand years. The nodules consist of micro-layers of Mn oxides and Fe oxy-hydroxides concentrically precipitated around a nucleus. Nodules are generally about golf ball sized, most commonly 1–12 cm in diameter, but can vary in diameter from millimeter-size (micronodules) to as large as 20 cm. The polymetallic nodules are formed by metals precipitation either from ambient seawater (hydrogenetic formation), from pore-waters in the sediments (diagenetic formation), from hydrothermal derived fluids (Bonatti and Nayudu, 1965; Bau et al., 2014; Kuhn et al., 2017) and the formation processes that represent a mix of these different end-member processes. The formation mechanisms control the general chemical composition of the nodules, e.g. the hydrogenetic precipitation leads to an enrichment of Co and REE while the diagenetic precipitation favours enrichment of Ni and Cu. Hydrogenetic nodules grow remarkably slow (1 to 5 mm per million years), whereas diagenetic nodules grow at rates up to 250 mm per million years.
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Citation proposal
(2019) . MINDeSEA WP6 Polymetallic Nodules (Point). https://services.mspdata.eu:/geonetwork/srv/api/records/5ee0d410-2aac-4328-9f37-390c0a010833 |
Simple
- Date ( Creation )
- 2019-04-27
- Date ( Publication )
- 2019-04-27
- Date ( Revision )
- 2020-04-27
- Edition
- MINDeSEA WP6
- Codespace
- https://www.europe-geology.eu/
- Presentation form
- modelDigital Digital model
- Purpose
- The main objective of MINDeSEA WP6 is to compile, analyse and deliver the information (generated data, products and metadata from areas explored and investigated) on the existing occurrences of polymetallic nodules in the European margins, in order to assess the European resource potential and inventory on polymetallic nodules. The compiled data will be made available through a common European information portal. The portal will provide access to data and metadata held by each organisation based on standards developed in the Geo-Seas and EMODnet-Geology project and data products compiled at a scale of 1:250,000 and more detailed scale when possible. This WP will also provide the basis for polymetallic nodules prospect identification and evaluation in European waters and identify key areas of missing information for future exploration and prospective mapping. The specific objectives of MINDeSEA WP6 are: - Characterize each polymetallic nodules occurrence, by compiling relevant data of the nodules generation controlling parameters, such as: location, geological setting, bathymetry, backscatter, sediment thickness, as well as the extend and depth of occurrence of Mn nodules. Morphology, textural characteristics, mineralogy and chemical composition and age data of the polymetallic nodules. Also to be compiled, if available, data from the surrounding sediments (type, composition, age, sedimentation rate, etc.). - To generate a harmonised dataset from the compiled data (harmonised mineral maps and databases) of polymetallic nodule occurrences. - Characterize the trace elements content of the several polymetallic nodules deposit types including the Critical Raw Materials (CRM) for base, noble and technological metals. Controlling factors on the occurrence of CRM will also be characterized. - Identify the principal metallogenic provinces where such deposits occur, taking into account spatial and temporal attributes, and provide models of formation.
Principal investigator
National Laboratory of Energy and Geology (LNEG)
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Pedro Ferreira
Laboratório Nacional de Energia e Geologia
Estrada da Portela Bairro do Zambujal
2610-999 Amadora
Portugal
- Maintenance and update frequency
- annually Annually
- GEMET - INSPIRE themes, version 1.0 ( Theme )
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- Sea regions
- Spatial scope ( Theme )
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- European
- GeoERA Keyword Thesaurus ( Theme )
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- sedimentary material , sand , mud , claystone , sandstone , clay , basalt , manganese , iron , baryte , potassium
- European Geoscience Registry - Projects ( Theme )
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- MINDeSEA
- INSPIRE theme register ( Theme )
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- Mineral resources
- GeoERA Projects ( Theme )
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- MINDeSEA
- GEMET - Themes, version 4.1.4, 13 Feb 2020 ( Discipline )
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- earth science
- GEMET - Themes, version 4.1.4, 13 Feb 2020 ( Discipline )
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- geology
- GEMET - Themes, version 4.1.4, 13 Feb 2020 ( Place )
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- marine geology
- SeaDataNet sea areas ( Place )
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- Atlantic Ocean
- SeaDataNet sea areas ( Place )
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- North Atlantic Ocean
- SeaDataNet sea areas ( Place )
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- North East Atlantic Ocean (limit 40W)
- SeaDataNet sea areas ( Place )
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- Arctic Ocean
- SeaDataNet sea areas ( Place )
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- Bay of Biscay
- SeaDataNet sea areas ( Place )
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- Black Sea
- SeaDataNet sea areas ( Place )
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- Gulf of Bothnia (Baltic Sea)
- DBpedia ( Stratum )
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- Europe
- EIONET - themes, version 4.1.4, 2020-02-13 ( Stratum )
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- lithosphere
- EIONET - themes, version 4.1.4, 2020-02-13 ( Theme )
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- hydrosphere
- DBpedia ( Theme )
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- Laboratório Nacional de Energia e Geologia
- DBpedia ( Theme )
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- Geological Survey Ireland
- DBpedia ( Temporal )
-
- 2019
- Use constraints
- otherRestrictions Other restrictions
- Access constraints
- otherRestrictions Other restrictions
- Spatial representation type
- vector Vector
- Denominator
- 230000
- Metadata language
- eng English
- Topic category
-
- Environment
- Geoscientific information
- Oceans
N
S
E
W
))
Vertical extent
- Minimum value
- 1
- Maximum value
- 5000
- OnLine resource
-
MINDeSEA Website
Project website
- OnLine resource
-
EGDI platform
EGDI platform
- Hierarchy level
- Dataset
Conformance result
- Date ( Publication )
- 2010-12-08
- Explanation
- See referenced specification
- Pass
- true
- Statement
- Data modeling used D2.8.III.21 Data Specification on Mineral resources - Technical Guidelines to generate data schema for Ferro-manganese Crusts data produced by EMODnet Geology WP7 Minerals and MINDeSEA WP8 Link to Information Plaform for MINDeSEA WP4 Ferro-manganese crusts, phosphorites and Critical Raw Materials. The INSPIRE MineralResourcesCore UML class diagam applied for the spatial data attributes includes the following feature types: MineralOccurrence, Mine, MiningActivity, MineralDepositModel. The MINDeSEA WP4 applies the following tables: Chemistry, economic, environment, metallogeny, other and phosphoritesCriticalRawMaterials as agreed by the WP4 and WP8 leaders.
Metadata
- File identifier
- 5ee0d410-2aac-4328-9f37-390c0a010833 XML
- Metadata language
- eng English
- Character set
- utf-8 UTF8
- Hierarchy level
- dataset Dataset
- Date stamp
- 2021-11-25
- Metadata standard name
- ISO 19115/INSPIRE_TG2/CZ4
- Metadata standard version
- 2003/cor.1/2006
Point of contact
Geological Survey Ireland (GSI)
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MINDeSEA WP8 Link to Information Platform Metadata Manager
Beggars Bush
Haddington Road
D04 K7X4
Ireland