ODM2 Medium Controlled Vocabulary ODM2 Group A vocabulary for describing the physical medium of a specimen, reference material, or sampled environment. Sediment Specimen collected from material broken down by processes of weathering and erosion and subsequently transported by the action of wind, water, or ice, and/or by the force of gravity acting on the particles. Sensors may also be emplaced to measure sediment properties. Adapted from SESAR Material CV. See http://app.geosamples.org/reference/materials.php. Definition adapted from Wikipedia. See: https://en.wikipedia.org/wiki/Sediment