The photographs may not be reproduced in any publications - commercial or scientific - without permission by Ralf Hetzel. A thrust fault scarp at the NE margin of Tibet (Zhangye thrust, Qilian Shan).

This was the first time that the fault scarp of a trench-type earthquake was observed and visually recorded. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases ...