State | Colorado |
---|---|
Name | Denver and Arapahoe Fms |
Geologic age | Tertiary-Cretaceous |
Lithologic constituents |
Major
Sedimentary > Clastic > Mudstone
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Conglomerate
Minor
Igneous > Volcanic > Mafic-volcanic > Andesite
Sedimentary > Clastic > Mudstone > Claystone
|
References | Tweto, Ogden, 1979, Geologic Map of Colorado: U.S. Geological Survey Special Geologic Map, scale 1:500,000. |
NGMDB product | |
Counties | Adams - Arapahoe - Boulder - Broomfield - Denver - Jefferson - Weld |