Shale is a sedimentary rock made up of tiny grains of silica, clay and other minerals. Many types of rock have few physical ...

The gas reserves in shale rocks in the UK have been "hyped", an academic said. Professor John Underhill from Heriot-Watt University said the UK's potential shale deposits were likely to have been ...

Fracking-the high-pressure injection of water, chemicals and sand into shale deposits to release the gas and oil trapped within the rock-in recent ... in "The New Oil Landscape" (NGM March 2013 ...