The Altun tectonic zone is an important left-handed strike-slip fault zone on the Asian continent. Recent studies reveal that the left-handed strike slip of this fault zone was developed not only in the Cenozoic, but also during the Late Ordovician. The fault zone is mainly composed of Proterozoic schists, volcanics, quartzites and carbonate rocks bearing stromatolites. The overlying strata are dominated by plateform carbonate rocks and volcan