Concept information
Preferred term
SEDIMENTS
Definition
- Sediment - can be analyzed in many ways. Sediment laminations, or layers, can indicate sedimentation rate through time. Charcoal trapped in sediments can indicate past fire events. Remains of microorganisms such as diatoms, foraminifera, microbiota, and pollen within sediment can indicate changes in past climate, since each species has a limited range of habitable conditions. When these organisms and pollen sink to the bottom of a lake or ocean, they can become buried within the sediment. Thus, climate change can be inferred by species composition within the sediment. (en)
Broader concept
Narrower concepts
- SEDIMENT THICKNESS (en)
Change note
- 2012-06-27 08:48:26.0 [mpmorahan] Insert Concept add broader relation (SEDIMENTS [3b4ea1db-bb93-4eb8-ac08-4880a3a5e6d2,40167] - PALEOCLIMATE RECONSTRUCTIONS [6f6423e8-ab4e-4572-8982-d9c40f64e28b,40149]);
- 2012-06-27 08:49:22.0 [mpmorahan] Insert Concept add narrower relation (SEDIMENTS [3b4ea1db-bb93-4eb8-ac08-4880a3a5e6d2,40167] - SEDIMENT THICKNESS [88735956-6d46-41e1-8cbb-5dba20c33d8c,40169]);
- 2012-07-26 11:57:58.0 [mpmorahan] insert Definition (id: null text: Sediment - can be analyzed in many ways. Sediment laminations, or layers, can indicate sedimentation rate through time. Charcoal trapped in sediments can indicate past fire events. Remains of microorganisms such as diatoms, foraminifera, microbiota, and pollen within sediment can indicate changes in past climate, since each species has a limited range of habitable conditions. When these organisms and pollen sink to the bottom of a lake or ocean, they can become buried within the sediment. Thus, climate change can be inferred by species composition within the sediment. language code: en);
URI
https://gcmd.earthdata.nasa.gov/kms/concept/3b4ea1db-bb93-4eb8-ac08-4880a3a5e6d2
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