Greenhorn Formation and Graneros Shale

Limited to northeastern area.
State New Mexico
Name Greenhorn Formation and Graneros Shale
Geologic age Turonian and Cenomanian
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)no lith description on map - description from GEOLEX
Sedimentary > Clastic > Mudstone > Shale (Bed)no lith description on map - description from GEOLEX
Minor
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed)no lith description on map - description from GEOLEX
Incidental
Sedimentary > Clastic > Mudstone > Claystone > Bentonite (Bed)no lith description on map - description from GEOLEX
References
NGMDB product
Counties Colfax - Harding - San Miguel - Union