Basaltic intrusive rocks related to basalt flows

In dikes and plugs
State Colorado
Name Basaltic intrusive rocks related to basalt flows
Geologic age Tertiary
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Basalt
References

Tweto, Ogden, 1979, Geologic Map of Colorado: U.S. Geological Survey Special Geologic Map, scale 1:500,000.

NGMDB product
Counties Costilla - Delta - Eagle - Garfield - Las Animas - Rio Blanco