lake sediments
Lakebed material buildup
Lake sediments are the layers of material that accumulate on the bottom of a lake over time—silt, clay, organic matter, and minerals that settle from the water or wash in from surrounding land.
Scientists study lake sediments as natural archives, since each layer preserves information about past climate, vegetation, and pollution levels: The lake sediments revealed centuries of environmental change.
- mudWet soil mixture
- siltWaterborne earth particles
- clayMoldable earth for ceramics
- pollenFloral reproductive grains
- coresCentral essential parts
core sample · layers · stratigraphy · deposition · organic · diatoms · algae · bottom · muck · ooze · paleoclimate · deep time · drilling · archive · fossils · turbidity · accumulation · watershed
- Lake VictoriaEntebbe, tilapia, cichlids, fishing industry, fishing boats
- sedimentsilt, sand, clay, gravel, mud
- sedimentssand, silt, mud, clay, gravel
- Holoceneinterglacial, ice cores, tree rings, carbon dating, domestication
- Ice Ageice age, mammoths, saber-tooth cat, mammoth, woolly mammoth
- lakesSuperior, Erie, Michigan, Ontario, Huron
lake sedimentsbedrock
Solid stone underground
solid rock · igneous rock · volcanic rock · metamorphic rock · magma
lake, lakes, sediment, sediments, sedimentary, sedimentation