2007 Map of Tanzania (IMAGE) Purdue University Caption This image shows a map of the 2007 earthquakes and dyking event in Tanzania. The black circles indicate earthquakes, and the red line shows the location of the dyke intrusion. Credit Purdue University image/Calais laboratory Usage Restrictions None 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.