Riachão Ring
Riachão Ring is a meteorite crater (astrobleme) in Brazil.
 Landsat image of the Riachão Ring | |
| Impact crater/structure | |
|---|---|
| Confidence | Confirmed |
| Diameter | 4.5 km (2.8 mi) |
| Age | <200 Ma |
| Exposed | Yes |
| Drilled | No |
| Location | |
| Location | Parnaíba Basin |
| Coordinates | 7°43′S 46°39′W |
| Country | Brazil |
| State | Maranhão |
  Location of the crater in Brazil | |
It is 4.5 kilometres (2.8 mi) in diameter and the age is estimated to be less than 200 million years (Jurassic or younger). The crater is exposed at the surface.[1]
1978 panoramic camera subframe
References
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