Notched Cliff (IMAGE) University of Texas at Austin Caption The terraced appearance of this cliff side from the Solomon Islands is a sign of uplift. Each indentation, called a notch, was once at sea level -- the notches were caused by erosion of the sea against the rock. Geological events such as earthquakes are gradually lifting the rock higher and higher. Credit Kaustubh Thirumalai Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.