Geological structure of the Tien Shan (IMAGE) St. Petersburg State University Caption (a) Tectonic units of the Tien Shan in Kyrgyzstan; (b) schematic geological map of the Songkultau area Credit SPbU 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.