Novillo_Abbildung 1 (IMAGE) Heidelberg University Caption Basaltische Gänge mit einem neu bestimmten Alter von 619 Millionen Jahren im Novillo Gneis im Bundesstaat Tamaulipas (Mexico). Dunkelgraue Ganggesteine durchschlagen einen hellen Gneis in der Bildmitte. Credit Bild: Bodo Weber (CICESE) Usage Restrictions This image may be used only in connection with the contents of this press release, and the source of the image must also be cited. 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.