| Kieli | Käännökset |
|---|---|
| ranska | sapropel |
| Monikko | sapropels |
(geology) An aquatic sludge-like sediment rich in organic matter formed in oxygen-free areas at the bottom of lakes, seas etc.
Contrast lithologic borders between coccolitic mud (Unit 1), sapropel mud (Unit 2), seekreide (lutite) (Unit 3), geological research along the route of South Stream pipeline with R/V Akademik (June, 2009) in the Bulgarian Exclusive Economic Zone in the Black Sea, depth 1500 m.