Intrusive gabbroic rocks

Sills and dikes of basalt, diabase, gabbro, and granophyric gabbro; locally albitized and zeolitized (Snavely and others, 1976a, b)
State Oregon
Name Intrusive gabbroic rocks
Geologic age Eocene to Oligocene
Lithologic constituents
Major
Igneous > Plutonic > Gabbroic > Gabbro (Dike or sill)
Incidental
Igneous > Volcanic > Mafic-volcanic > Basalt (Dike or sill, Diabase)
References

Walker, G.W. and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000.

Snavely, P.D., Jr., MacLeod, N.S., and Wagner, H.C.,, 1973, Miocene tholeiitic basalts of coastal Oregon and Washington and their relations to coeval basalts of the columbia Plateau: Geological Society of America Bulletin, v. 84, p. 387-424.

Snavely, P.D., Jr., MacLeod, N.S., Wagner, H.C., and Rau, W.W., 1976a, Geologic map of the Cape Foulweather and Euchre Mountain quadrangles, Lincoln County, Oregon: U.S. Geological Survey Miscellaneous Investigations Series Map I-868, scale 1:62,500.

https://pubs.er.usgs.gov/publication/i868

NGMDB product
Counties Lincoln