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Nördlinger Ries Impact Crater
TL;DR
The Nördlinger Ries is a confirmed impact crater in Germany, formed 14.8 million years ago by a meteorite, showcasing unique geological features and significant energy release. Its study has advanced our understanding of impact events on Earth.
✦ Why It Matters
Consider exploring geological sites like Nördlinger Ries for insights into impact events and their effects on Earth.
Key Takeaways
- Study the geological features of impact craters.
- Investigate the effects of meteorite impacts on local geology.
- Explore the significance of coesite in impact studies.
- Consider the implications of impact events on Earth's history.
Full Summary
Located in Bavaria, the Nördlinger Ries is a 24 km diameter impact crater formed by a meteorite approximately 14.8 million years ago during the Miocene epoch. Initially thought to be of volcanic or tectonic origin, it was confirmed as an impact site in 1960 when coesite, a mineral formed under extreme pressure, was discovered.
The impactor, estimated to be 1.5 km in diameter, struck at a velocity of 20 km/s, releasing energy equivalent to 40 million Hiroshima bombs. This event not only created the crater but also ejected material that formed moldavite tektites found up to 450 km away.
The crater's unique rampart structure, similar to those found on Mars, and the presence of tiny diamonds in local stone buildings highlight its geological significance. Ongoing studies continue to refine our understanding of the impact's effects and the characteristics of the impacting body.