Photos • Location
The Cobre Ridge caldera is a large Jurassic volcano in the U.S. state of Arizona. It formed about 170 million years ago when a VEI-8 eruption ejected more than 1,000 km3 (240 cu mi) of crystal-rich rhyodacite ignimbrite. [1]
References
External links
- "Cobre Ridge". The Collapse Caldera Database.
31°21′47″N 111°07′37″W / 31.363°N 111.127°W
 | This Arizona state location article is a stub. You can help Wikipedia by expanding it. |
The Cobre Ridge caldera is a large Jurassic volcano in the U.S. state of Arizona. It formed about 170 million years ago when a VEI-8 eruption ejected more than 1,000 km3 (240 cu mi) of crystal-rich rhyodacite ignimbrite. [1]
References
External links
- "Cobre Ridge". The Collapse Caldera Database.
31°21′47″N 111°07′37″W / 31.363°N 111.127°W
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| This Arizona state location article is a stub. You can help Wikipedia by expanding it. |