Carbon Iron Silicon Oxygen (image) University of California - Los Angeles Share Print E-Mail Caption New simulations suggest that carbon (C) routinely bonded with iron (Fe), silicon (Si) and oxygen (O) deep within the magma ocean that covered Earth when it was young. Those heavy molecules would have eventually sunk to the planet's core, hinting at hidden stores of carbon at our planet's center. Credit Natalia Solomatova/École Normale Supérieure de Lyon 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.