The SIMS instrument (IMAGE) Uppsala University Caption The SIMS instrument at the Swedish Museum of Natural History in Stockholm, which the researchers used to investigate the oxygen isotope composition of minerals in various lavas from Indonesia. Credit Frances Deegan Usage Restrictions Only to be used when reporting about research by Frances Deegan 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.