Moenave
Description
Source: Wikipédia
The Moenave Formation is a Mesozoic geologic formation, in the Glen Canyon Group. It is found in Utah and Arizona.
The Moenave was deposited on an erosion surface on the Chinle Formation following an early Jurassic uplift and unconformity that represents about ten million years of missing sedimentation. Periodic incursions of shallow seas from the north during the Jurassic flooded parts of Wyoming, Montana, and a northeast–southwest trending trough on the Utah/Idaho border. The Moenave was deposited in a variety of river, lake, and flood-plain environments, near the ancient Lake Dixie.
The oldest beds of this formation belong to the Dinosaur Canyon Member, a reddish, slope-forming rock layer with thin beds of siltstone that are interbedded with mudstone and fine sandstone. The Dinosaur Canyon, with a local thickness of 140 to 375 feet (43 to 114 m), was probably laid down in slow-moving streams, ponds and large lakes. Evidence for this is in cross-bedding of the sediments and large numbers of fish fossils.
The upper member of the Moenave is the pale reddish-brown with a thickness of 75 to 150 feet (23 to 46 m) and cliff-forming Springdale Sandstone. It was deposited in swifter, larger, and more voluminous streams than the older Dinosaur Canyon Member. Fossils of large sturgeon-like freshwater fish have been found in the beds of the Springdale Sandstone. The next member in the Moenave Formation is the thin-bedded Whitmore Point, which is made of mudstone and shale. The lower red cliffs visible from the Zion Human History Museum (until 2000 the Zion Canyon Visitor Center) and the St. George Dinosaur Discovery Site, discovered on February 26, 2000, are accessible examples of this formation.
Découvertes
Source: The Paleobiology Database
Site(s) correspondant(s) à cette formation: 8
MNA 854-1, Ward Terrace : Arizona - Coconino 13958 14723 MNA locality 854-1 on Ward Terrace near Cameron, AZ- Dinosaur Canyon tracksite (PROXY) : Utah - Washington 35162 66229
- Trail Canyon tracksite : Utah - Washington 66229 in Trail Canyon, Zion National Park
- Walt's Quarry 1 & 2, St. George, tracksite : Utah - Washington 38719 78695 within St. George city limits, on the property of the Washington County School District, just W of Riverside Drive from the original SGDS. Includes two quarries at same level.
- Moenkopi Wash 4 tracksite, MNA 1153 : Arizona - Coconino 41099 along Moenkopi Wash, ca. 11.5 km WSW of Tuba City
- Moenave tracksite, MNA 565 : Arizona - Coconino 41099 listed only as "Moenave" and coordinates based on other nearby tracksites
- Freeman Quarry (lower fish beds), St. George : Utah - Washington 51460 78695 within St. George city limits, on the property of the Washington County School District, just W of Riverside Drive from the original SGDS.
- Kanab Creek tracksite, RAM V94277 : Utah - Kane 51461 54065 62895 65129 65669 5 mi. N of Kanab, along Kanab Creek in Kanab Canyon
Publication(s)
La base comprend 13 publication(s).
Source: The Paleobiology Database
- ↑1 2 M. Morales. 1994. First dinosaur body fossils from the Lower Jurassic Dinosaur Canyon Member, Moenave Formation of northeastern Arizona. Journal of Vertebrate Paleontology 14(3, suppl.):39A
- ↑1 S. G. Lucas and A. B. Heckert. 2001. Theropod dinosaurs and the Early Jurassic age of the Moenave Formation, Arizona-Utah, USA. Neues Jahrbuch für Geologie und Paläontologie Monatshefte 2001(7):435-448 (https://doi.org/10.1127/njgpm/2001/2001/435)
- ↑1 2 V. L. Santucci, A. P. Hunt, and T. Nyborg, J. P. Kenworthy. 2006. Additional fossil vertebrate tracks in National Park Service Areas. Fossils from Federal Lands. New Mexico Museum of Natural History and Science Bulletin 34:152-158
- ↑1 2 3 D. B. DeBlieux, J. I. Kirkland, and J. A. Smith, J. McGuire, V. L. Santucci. 2006. An overview of the paleontology of Upper Triassic and Lower Jurassic rocks in Zion National Park, Utah. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:490-501
- ↑1 2 A. R. C. Milner, M. G. Lockley, and S. B. Johnson. 2006. The story of the St. George Dinosaur Discovery Site at Johnson Farm: an important new Lower Jurassic dinosaur tracksite from the Moenave Formation of southwestern Utah. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:329-345
- ↑1 2 A. R. C. Milner, T. A. Birthisel, and J. I. Kirkland, BH Breithaupt, N. A. Matthews, M. G. Lockley, V. L. Santucci, S. Z. Gibson, D. D. DeBlieux, M. Hurlbut, J. D. Harris, P. E. Olsen. 2011. Tracking Early Jurassic dinosaurs across southwestern Utah and the Triassic-Jurassic transition. Field Trip Guide Book, 71st Annual Meeting of the Society of Vertebrate Paleontology Paris Las Vegas, Las Vegas, Nevada, November 2-5, 2011. Nevada State Museum Paleontological Papers 1:1-107
- ↑1 2 3 4 G. V. Irby. 1993. Early Jurassic dinosaur tracksites, northeastern Arizona. Proceedings of the 1st Annual Symposium, Fossils of Arizona. Mesa Southwest Museum and Southwest Paleontological Society, Mesa, AZ
- ↑1 2 A. R. C. Milner and M. G. Lockley. 2006. History, geology and paleontology: St. George Dinosaur Discovery Site at Johnson Farm, Utah. Making Tracks Across the Southwest: The 2006 Desert Symposium
- ↑1 2 C. R. Knight. 1942. Parade of life through the ages. The National Geographic Magazine 81(2):141-184
- ↑1 D. L. Lofgren, J. A. Greening, and C. F. Johnson, S. J. Lewis, M. A. Torres. 2006. Footprints on the sands of time: fossil tracks at the Raymond Alf Museum of Paleontology. Making Tracks Across the Southwest: The 2006 Desert Symposium
- ↑1 J. Laudermilk. 1945. The giants of Kanab. Deseret Magazine 8(3):19-22
- ↑1 H. E. Gregory. 1950. Geology and geography of the Zion Park region, Utah and Arizona. United States Geological Survey Professional Paper 220:vi-200 (https://doi.org/10.3133/pp220)
- ↑1 M. G. Lockley and G. D. Gierlinski. 2006. Diverse vertebrate ichnofaunas containing Anomoepus and other unusual trace fossils from the Lower Jurassic of the western United States: implications for paleoecology and palichnostratigraphy. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:176-191