Shell sand - observations

Definition: Shell sand observations is a point dataset with over 3000 sampling points, where shell sand or shell gravel has been detected in the bottom sediments. Shell sand and shell gravel are defined as sediments with calcium carbonate content more than 50%.

Updated: 30.06.2022
Owner: Geological Survey of Norway


The dataset describes the composition of the bottom sediment at a location (bottom sample) on the seabed. The dataset is mainly used for mapping / modeling of shell sand areas, which in turn is used as a basis in overall areal, resource and environmental planning, habitat mapping, vulnerability analyzes, impact assessments in connection with installations on the seabed, etc. Skjellsand is used for liming acidic watercourses, as agricultural lime, sanding of winter roads, in chicken feed, for water purification etc.

Explanation of assessment of FAIR principles:

There have made various tests to evaluate datasets in relation to the FAIR criteria. These are our interpretations, which then assess the criteria in relation to standards and protocols used for spatial data in Norway and Europe. For more information on which calculations we use for each indicator, look at the details of FAIR assessments for each specific dataset.

FAIR status: 60%

Mareano status