Date ( Creation )

1992-12-01

Date ( Revision )

2026-01-09

Identifier

http://www.shom.fr/HOM/GEOL_SEDIM_MONDIALE

Presentation form

Digital map

Credit

©Shom

Maintenance and update frequency

Irregular

Keywords ( Theme )

• sedimentology

• marine sediment

• seabed map

• open data

• Product

GEMET - INSPIRE themes, version 1.0 ( Theme )

• Sea regions

INSPIRE Spatial scope

• Nationales

High-value dataset categories

• Observation de la terre et environnement

Use limitation

Data may be freely used providing that the source is mentioned as follows "Shom, 2026. Worldwide seabed sediment map, https://dx.doi.org/10.17183/HOM_GEOL_SEDIM_MONDIALE "

Use limitation

Do not use for navigation.

Use limitation

Data may be freely used providing that the source is mentioned as follows "Shom, 2026. Worldwide seabed sediment map, https://dx.doi.org/10.17183/HOM_GEOL_SEDIM_MONDIALE "

Use limitation

Do not use for navigation.

Access constraints

License

Use constraints

Other restrictions

Other constraints

Licence Ouverte version 2.0 Open Licence version 2.0

Access constraints

Other restrictions

Other constraints

Pas de restriction d'accès public. No public access restrictions.

Classification

Unclassified

Spatial representation type

Vector

Denominator

500000

Metadata language

fre French

Character set

utf8 UTF8

Topic category

• Oceans

Supplemental Information

* Sediment: An assembly of coarse or fine clastic or biogenic particles transported by one or several means.

* Conglomerate: Sediments in which 50 -100% of the particles are larger than 20 mm.

* Gravel conglomerate: Sediments with a conglomerate matrix and 15 - 50% gravel.

* Gravel: Sediments in which 50 -100% of the particles are between 20 and 2 mm.

* Gravelly sand: A sand matrix comprising 15 - 50% gravel.

* Sand: Sediments in which 50 -100% of the particles are between 2 and 0.5 mm.

* Muddy sand: Sand in which between 5 and 20% of the particles are smaller than 0.05 mm.

* Fine sand: Sediments in which 50 -100% of the particles are between 0.5 and 0.05 mm.

* Fine muddy sandstone: Fine sand in which between 5 and 20% of the particles are smaller than 0.05 mm.

* Silt: Sediments composed of 50 to 100% detrital or biogenic particles between 0.01 and 0.05mm.

* Clay: Sediments composed of 50 to 100% detrital or biogenic particles finer than 0.01mm.

* Mud: Sediments in which 20 -100% of the particles are smaller than 0.05 mm.

Distribution format

• SHP

  (

  inapplicable

  )

• GML

  (

  3.2

  )

OnLine resource

Shom Geoportal  

Shom Geoportal

OnLine resource

Shom marketplace  

Shom marketplace

OnLine resource

Download service - Worldwide seabed sediment map  

Access point / Download service

OnLine resource

SEDIM_MONDIALE_BDD_4326_WMSV  

Access point / WMS Worldwide seabed sediment map

OnLine resource

SEDIM_MONDIALE_BDD_4326_WFS:cartesedimmonde_3857  

Access point / WFS Worldwide seabed sediment map

Hierarchy level

Series

Statement

The information used for the development of this product is based on the nature map of the ocean floor published by UNESCO in 1972 and digitized by the Shom in 1995. The purpose of this initial rather coarse map was to provide basic information on to the nature of the seabed and mainly concerned the deep sea. It was gradually improved by the Shom which incorporated more precise maps produced by the Shom, digitized sedimentary maps or summary documents published by various organizations. These maps were previously edited and put into the format of the classification of the nature of the sediments established by the Shom. This version of the world map includes the maps listed in appendix 7.3. These maps were only integrated into the world map when the following conditions were met: - their quality and the interest of their content authorized their integration and validation in the Shom Sedimentological Database (BDSS); - their scale is less than or equal to 1 / 100,000. The product was developed from sedimentary maps identified, digitized and integrated into the BDSS from 1992 to 2020. Some of these maps are synthesis of maps which are themselves derived from the synthesis of very diverse sedimentary data. Many of these compilations were produced by the Shom. The compilation of all these maps in a single document required redefinitions of the overlap zones which were carried out from the data of the morphology and the knowledge of the regional sedimentology (bibliographic and cartographic data).

Metadata

File identifier

HOM_GEOL_SEDIM_MONDIALE.xml   XML

Metadata language

fre French

Character set

utf8 UTF8

Hierarchy level

Series

Hierarchy level name

Collection de données

Date stamp

2026-03-18T14:32:38

Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0