noun
- A type of organic sediment or mud formed in freshwater environments, consisting of decomposed plant and animal matter mixed with mineral material.
Usage: technical; geology/soil science; also spelled gytja
Examples
- The lake bottom was covered with a thick layer of gyttja that accumulated over thousands of years.
- Gyttja deposits are commonly found in peat bogs and wetland environments.
- Paleontologists studied the gyttja layers to understand the region's climate history.
- The dark gyttja sediment contained well-preserved fossils of ancient aquatic organisms.