Nördlinger Ries impact structure
How a volcano became an impact crater |
| The circular depression within the limestone hills between the Schwäbische and Fränkische Alb was once considered to be of volcanic origin. At some stage scientists even believed that glaciers had played a role in shaping it. |
| How the various ideas evolved and, finally, turned into today's impact theory of crater formation is shown in this presentation. |
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