Write short notes about shale gas.

Explanation

Due to the compaction of small old rocks, which contain mud and minerals such as quartz and calcite, trapped beneath Earth.s surface and form the soft finely stratified sedimentary rock called shale. These rocks contain fossil fuels like oil and gas in their pores. This fuel is extracted by a technique called hydraulic fracturing.
Shale drilling could affect ground water reserves, which can contaminate drinking water. It also affects the fertility of the soil. Million gallons of water is needed to break and release the shale gas which inturn can affect the fertility of the soil.
Million gallons of water is needed to break and release the shale gas, which inturn can affect the water table.