Blue Mesa Member

Blue Mesa Member
Stratigraphic range: Late Triassic, early Norian 223–218  Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
The Tepees, Petrified Forest National Park
Type	member
Unit of	Chinle Formation
Lithology
Primary	mudstone, sandstone
Location
Region	Colorado Plateau
Extent	Arizona, Utah

The Blue Mesa Member is a member of the Chinle Formation. It is located in the Petrified Forest National Park of northeast Arizona. ^[1]

Geology

The colorful bands of mudstone and sandstone were laid down during the Triassic, when the area was part of a huge tropical floodplain. ^[2]

Gallery

• 
  The Tepees
• 
  The Tepees

See also

• Chinle Formation

References

1. Gehrels, George; Giesler, Dominique; Olsen, Paul; Kent, Dennis; Marsh, Adam; Parker, William; Rasmussen, Cornelia; Mundil, Roland; Irmis, Randall; Geissman, John; Lepre, Christopher (2020-09-23). "LA-ICPMS U–Pb geochronology of detrital zircon grains from the Coconino, Moenkopi, and Chinle formations in the Petrified Forest National Park (Arizona)". Geochronology. 2 (2): 257–282. doi: 10.5194/gchron-2-257-2020 . hdl: 10150/663492 .
2. "Lucas, S.: Restoration of late triassic landscapes at the petrified forest national park, Arizona". Archived from the original on March 24, 2016. Retrieved February 26, 2020.

Literature

• Blakey, and Ranney, 2008. Ancient Landscapes of the Colorado Plateau, Ron Blakey, Wayne Ranney, c 2008, Grand Canyon Association (publisher), 176 pages, with Appendix, Glossary, Index. Contains approximately 75 shaded topographic maps, for geology, etc., with 54 (23 pairs, (46)) for Colorado Plateau specifically; others are global, or North American.
• Utah DeLorme Atlas & Gazetteer, 7th Edition, c. 2010, 64 pages, pp. 24, 32.