Geologic Unit: Madera

Usage:

Madera Group (NM*)
Madera Limestone (NM*,CO*)
Madera Formation (NM*,CO*)
Madera Limestone of Magdalena Group (NM*)
Madera Formation of Magdalena Group (NM*)
[†Magdalena Group not used by the NM Geol. Survey.]

Subunits:

GROUP STATUS (alphabetical) --all in NM: Alamitos Formation*, Atrasado Formation, Bar B Formation, Bursum Formation*, Gray Mesa Formation, Los Moyos Limestone*, Porvenir Formation*, Wild Cow Formation*.
FORMATION STATUS (alphabetical) --all in NM: Atrasado Member*, Gray Mesa Member*, Jemez Springs Shale Member, Red Tanks Member*, Whiskey Creek Pass Limestone Member.

Geologic age:

Middle Pennsylvanian (late Atokan) to early Permian (Wolfcampian)*

Type section, locality, area and/or origin of name:

Named from town of La Madera, Sandoval Co., central NM (Keyes, 1903).

AAPG geologic province:

Estancia basin*
Las Vegas-Raton basin*
Orogrande basin*
Palo Duro basin*
San Juan basin*