Image 2 (image) Geological Society of America Share Print E-Mail Caption Recessed meteoritic ejecta layer site 1.1-m-thick deposit beneath thick sequence of basaltic lava flows. Credit Simon Drake Usage Restrictions Credit: Simon Drake and Geology. 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.