Time Sequence of the Sentinel Rock-Avalanche Landslide (image) University of Utah Share Print E-Mail Caption A computer-simulated time sequence of the gargantuan Sentinel landslide in Zion Canyon 4,8000 years ago is shown here. The first six frames show the progress of the rock-avalanche landslide, which lasted about a minute. Darker brown indicates thicker slide deposits, while yellow indicates thinner deposits. The last two frames compare the slide after it was at a complete standstill after 200 seconds with a reconstruction of the actual landslide deposit based on geological mapping. That shows the simulation is close to reality. Credit Jeff Moore, University of Utah Usage Restrictions None Share Print E-Mail 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.