Spectrum Track Site

Washington, Utah

State Instutional Trust Lands

Sienna Hills/Spectrum Site

I've spent more time googling about this  site, it wasn't too hard to find, just drove to the fence line and wandered till we found the site. Found the first reference from a paper linked on the Dinosaur Discovery site.

Field Trip Guide Book 71 st Annual Meeting of the Society of Vertebrate Paleontology








 
"The footprints at the Spectrum Tracksite are preserved at the very top of the Springdale Sandstone, the lower member of the Kayenta Formation. The track-bearing bed is about 45-50 cm and approximately 5M above the Kayenta base.(Hamblin et al. 2006)."NEVADA STATE MUSEUM
PALEONTOLOGICAL PAPERS NUMBER 1

The site is at the bottom of a wash, with a steep bank on the northwest bank. It has been fenced by SITLA with access for pedestrians but not atv's. The gates on roads approaching this site are locked but the fence only extends into the scrub. It is posted so consider  if this site is worth the possible consequences.

 Trackway with at least four steps.

The top of the Springdale Sandstone, which was deposited in a fluvial channel, preserves a megatracksite that can be traced extensively from southwestern Utah, as far east as Ward Terrace near Tuba City in north-central Arizona. The interpretation of the “Springdale megatracksite” (Lucas et al. 2005a),supported by several authors (DeBlieux et al.)
 Is this a skin impression? The tracks are mostly underprints, this is within a larger track. The overlieing bed is not preserved here, It would interesting to find the contact  at other Springdale Sandstone sites and see if the overlieing beds dip into the tracks, and to see if the prints are from the overlieing beds.
 Keys for scale, theropod
 Anomoepus? Additional info
Full track site with Shnabkaib in the distance.

2 comments:

  1. The tracksite map above is not the Spectrum Tracksite. This is the Hamblin Tracksite and was completely removed for construction of the Southern Parkway. Milner and others will be publishing a detailed description of this locality and others nearby soon.

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  2. Spectrum Tracksite map can be seen in this paper: http://www.academia.edu/226107/More_reports_of_theropod_dinosaur_tracksites_from_the_Kayenta_Formation_Lower_Jurassic_Washington_County_Utah_Implications_for_describing_the_Springdale_Megatracksite

    If you need a jpeg then email me at arcmilner@gmail.com

    Andrew

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