Drill Core from Three Gorges Area (image) Arizona State University Share Print E-Mail Caption This is Zhang examining a new drill core in Three Gorges area (Hubei Province), People's Republic of China. This drill core includes sedimentary rocks from the middle Ediacaran to the Early Cambrian. Credit ASU 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.