What is Sapropelic organic matter?
Sapropels largely contain amorphous (sapropelic) organic matter derived from planktonic organisms (such as planktonic or benthic algae in lakes or plankton in marine settings). Such organic matter possesses a large hydrogen-to-carbon ratio; therefore, sapropelic sequences are potential petroleum-forming deposits.
How are Sapropels formed?
ORL/sapropel formation is associated with either a high flux of organic matter to the seafloor from high-productivity conditions at the surface or increased preservation of organic matter in the ocean bottom due to deep waters devoid of oxygen.
What is a sapropel in geology?
sapropel, unconsolidated sedimentary deposit rich in bituminous substances. It is distinguished from peat in being rich in fatty and waxy substances and poor in cellulosic material. When consolidated into rock, sapropel becomes oil shale, bituminous shale, or boghead coal.
Which coal is sapropelic coal?
sapropelic coal, hydrogen-rich coal, including cannel coal and boghead coal (see torbanite), derived from sapropels (loose deposits of sedimentary rock rich in hydrocarbons) and characterized by a dull black, sometimes waxy lustre.
What is sapropel fertilizer?
Sapropel is a unique ecological material suitable to be used as organic fertilizer, feed additive, substance for pharmacology, SPA treatments or construction industry. Sapropel has been forming during thousands of years in the bottom of lakes, therfore it is very clean and valuable.
What is Sapropelic coal?
What is the meaning of sub bituminous coal?
subbituminous coal, also called black lignite, generally dark brown to black coal, intermediate in rank between lignite and bituminous coal according to the coal classification used in the United States and Canada. In many countries subbituminous coal is considered to be a brown coal.
What is humic coal?
Humic coals are banded coals. They are the most abundant type of coal. The bands of coal that comprise a humic coal are divided into four lithotypes (vitrain, clarain, durain, and fusain, Stopes, 1919) based on their general appearance. A single humic coal bed may contain all four lithotypes.
What is cannel coal used for?
Cannel coal was used as a major feedstock for the historical manufactured gas industry, as the gas produced from it was valuable for lighting due to the luminosity of the flame it produced.
Where is sub bituminous coal?
Although subbituminous coal has the second lowest energy content, large quantities are found in thick beds near the surface, resulting in low mining cost and, correspondingly, lower prices. Wyoming produces the vast majority of subbituminous coal in the U.S.
How is sub bituminous coal formed?
Later stage coalification (formation of subbituminous coal, bituminous coal, and anthracite) results from deeper burial and exposure of organic matter to more extreme temperatures and pressures compared to those experienced by brown coals and lignite.
What is sapropelic coal?