Gondwana supported from below (IMAGE) Carnegie Institution for Science Caption Model of deep diamond formation and subsequent diapiric uprise in buoyant material to form a newly accreted layer beneath the supercontinent Gondwana, prior to continent migration. Credit Drawing by Qiwei Zhang. Usage Restrictions With credit License Original 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.