File:Dikes above Basalt as bridge over Grande Ronde IMG 4556.jpg
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![File:Dikes above Basalt as bridge over Grande Ronde IMG 4556.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Dikes_above_Basalt_as_bridge_over_Grande_Ronde_IMG_4556.jpg/800px-Dikes_above_Basalt_as_bridge_over_Grande_Ronde_IMG_4556.jpg?20110808034549)
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Categories:
- Magmatic dikes of the Columbia River Basalt Group in Oregon
- Flood basalts in the United States
- Volcanic landforms in Oregon
- Columbia River Basalt Group
- Columnar basalts in the United States
- Sheet-like dikes
- Basalt in Oregon
- Grande Ronde Basalt
- Sheet-like basalt dikes of the Columbia River Basalt Group
- Miocene rocks in the United States