Comment on the origin of coal, petroleum and natural gas.
Answers
petroleum:The origin of petroleum still has uncertainties despite the tremendous researches and studies devoted to it rather than any other natural substance. There are two different theories for the origin of petroleum; Organic and Inorganic origin.
Coal:It is generally accepted that coal originated from plant debris including ferns, trees, bark, leaves, roots and seeds some of which accumulated and settled in swamps.
This unconsolidated accumulation of plant remains is called peat. Peat is being formed today in marshes and bogs.
Layers of peat, covered by sediment receiving heat and pressure from the subsidence of the swamps, went through a metamorphic process called coalification to form coal.
The metamorphic process is thought to have occurred in several stages. The conditions of the metamorphic process and the swamps and bogs greatly affected the formation of the coal.
Several factors which greatly affected the content, makeup, quality, and rank of the coal were:
Answer:
Coal : Coal are compact and transformed plant available from sedimentary rock.
Natural gas : Natural gas is available with coal and crude oil. Thus it is believed that natural gas has formed during the formation of coal and crude oil by the decomposition of organic materials.
Petroleum : Dead organisms which accumulated under has transformed to dark liquid called petroleum by the action of heat and pressure.