| State | Oregon |
|---|---|
| Name | Basaltic lava flows |
| Geologic age | Oligocene to Miocene |
| Lithologic constituents | Major
Igneous > Volcanic > Mafic-volcanic > Basaltic-andesite (Flow, Volcaniclastic-volcanic breccia)
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow, Volcaniclastic-volcanic breccia)
|
| References | Walker, G.W. and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000. |
| NGMDB product | |
| Counties | Clackamas |