GENERAL GEOLOGY

Detailed explanation-1: -Hydraulic action is the erosion that occurs when the motion of water against a rock surface produces mechanical weathering. Most generally, it is the ability of moving water (flowing or waves) to dislodge and transport rock particles.

Detailed explanation-2: -This process of erosion occurs where the power of the waves hits the cliff face directly and loosens the interior of joints and bedding planes.

Detailed explanation-3: -Hydraulic action also occurs as a stream tumbles over a waterfall to crash onto the rocks below. It usually leads to the formation of a plunge pool below the waterfall due in part to corrosion from the stream’s load, but more to a scouring action as vortices form in the water as it escapes downstream.

Detailed explanation-4: -Hydraulic action – the force of the water wearing away the bed and bank of the river • Corrosion – the chemical reaction between the water and the bed and bank of the river, wearing it away. • Corrasion/abrasion – where bedload in the river wears away its bed and bank.

Detailed explanation-5: -Coastal erosion through hydraulic action happens through the forces of the waves hitting a coastline and trapping air into cracks and joints on the face of a cliff. Over time, the cracks in the cliff face will get larger due to this process and cause the cliff to start splintering away.