Blue Mesa Member

The Blue Mesa Member is a geologic formation of the Chinle Group. It is located in the Petrified Forest National Park of northeast Arizona.

Blue Mesa Member Stratigraphic range: Early to Middle Triassic, 225–220 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
The Tepees, Petrified Forest National Park
Type	Geological formation
Unit of	Chinle Formation
Lithology
Primary	mudstone, sandstone
Location
Region	Colorado Plateau
Extent	Arizona  Utah

Geology

The colorful bands of mudstone and sandstone were laid down during the Triassic, when the area was part of a huge tropical floodplain.[1]

See also

• Chinle Formation

Gallery

• 
  The Tepees
• 
  The Tepees
• 
  Major Chinle Formation members

References

1. "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.CS1 maint: bot: original URL status unknown (link)

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.