English Dictionary

sapropel

/ˈsapɹə(ʊ)pɛl/

noun

(geology) An aquatic sludge-like sediment rich in organic matter formed in oxygen-free areas at the bottom of lakes, seas etc.

Sapropel is a type of organic-rich sediment found in freshwater lakes.

意味（1）

(geology) An aquatic sludge-like sediment rich in organic matter formed in oxygen-free areas at the bottom of lakes, seas etc.

Another instance in which Mediterranean sapropels have provided clues about events deep within the African continent is the ‘greening’ of the Sahara about 120,000 years ago.