Sapropel
Esquema
Jerarquía
<materials by composition> > combination inorganic/organic material > soil > <soil by composition or origin> > sediment
Descripción
A nitrogen-rich, combustible, sludge-like black sedimentary deposit that occurs as a result of the decomposition of microorganisms in anaerobic conditions on the bottoms of lakes and seas. Compressed into hard rock, sapropel becomes oil shale or sapropelic coal.
URI original del concepto
Otros términos
- sapropels [en]