"Hydraulic fracturing in a well for shale gas development, which involves injection of fluids to fracture the shale and release the gas up the well, has been confirmed as the cause for small felt seismic events at one location in the world, " the report states.

CNN: Debate over fracking, quakes gets louder

The Chinguetti development will include six production wells, four water injection wells, and a gas injector well, attached to a permanently moored floating production, storage and offloading vessel situated in about 800 metres of water.

BBC: NEWS | Business | Woodside to pump Mauritania oil