Map of the Hikurangi Plateau (IMAGE) University of Texas at Austin Caption The Hikurangi plateau is a remnant of a series of epic volcanic eruptions that began 125 million years ago in the Pacific Ocean. A recent seismic survey (red rectangle) led by the University of Texas Institute for Geophysics imaged the plateau as it sinks into New Zealand’s Hikurangi subduction zone (red line). Credit Andrew Gase Usage Restrictions Please include 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.