Blue Mesa Member
{{Infobox rockunit
| name = Blue Mesa Member
| image = The_PEFO_Tepees.jpg
| caption = The Tepees, Petrified Forest National Park
| period = Norian
| age = Late Triassic, early Norian {{fossil range|223|218}}
| type = member
| prilithology = mudstone, sandstone
| otherlithology =
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| region = Colorado Plateau
| coordinates =
| unitof = Chinle Formation
| subunits =
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| extent = {{flag|Arizona}}
{{flag|Utah}}
| area =
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The Blue Mesa Member is a member of the Chinle Formation. It is located in the Petrified Forest National Park of northeast Arizona.{{Cite journal|last=Gehrels|first=George|last2=Giesler|first2=Dominique|last3=Olsen|first3=Paul|last4=Kent|first4=Dennis|last5=Marsh|first5=Adam|last6=Parker|first6=William|last7=Rasmussen|first7=Cornelia|last8=Mundil|first8=Roland|last9=Irmis|first9=Randall|last10=Geissman|first10=John|last11=Lepre|first11=Christopher|date=2020-09-23|title=LA-ICPMS U–Pb geochronology of detrital zircon grains from the Coconino, Moenkopi, and Chinle formations in the Petrified Forest National Park (Arizona)|url=https://gchron.copernicus.org/articles/2/257/2020/|journal=Geochronology|language=English|volume=2|issue=2|pages=257–282|doi=10.5194/gchron-2-257-2020|doi-access=free}}
Geology
The colorful bands of mudstone and sandstone were laid down during the Triassic, when the area was part of a huge tropical floodplain.{{Cite web |url=http://www.nature.nps.gov/geology//paleontology/pub/fossil_conference_6/lucas.htm |title=Lucas, S.: Restoration of late triassic landscapes at the petrified forest national park, Arizona |access-date=February 26, 2020 |archive-url=https://web.archive.org/web/20160324172812/http://www.nature.nps.gov/geology//paleontology/pub/fossil_conference_6/lucas.htm |archive-date=March 24, 2016 |url-status=bot: unknown }}
See also
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Gallery
File:PAINTED DESERT BADLANDS.jpg|The Tepees
File:Painteddesert.JPG|The Tepees
References
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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.