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Dry Mesa Quarry [BYU], Mesa County, Colorado, USA
| Lat/Long (Decimal) | 38.5831,-108.397 |
|---|---|
| Co-ordinates Derivation | based on nearby landmark |
| Given Location | Colorado, United States |
| Mindat.org Region (for given coordinates) | Mesa County, Colorado, USA |
Collections
| Collection | Reference | Stratigraphic Name | Comments | Lithology | Age |
|---|---|---|---|---|---|
| Dry Mesa Quarry [BYU] | Unwin D. M., Heinrich W. D. (1999) | Morrison - Brushy Basin | upper part of Morrison, near base of member; 30-45 m below base of overlying Cedar Mountain Fm. The base of the quarry is about 1 metre above the "clay change". "Sediments near the clay change were dated at 150.3 +/- 0.26 Ma based on Ar40/Ar39 data from plagioclase crystals. Therefore the quarry must be younger than that, close to 150.2 +/- 0.5 Ma. More recent U-Pb dates from this part of the Morrison resulted in 151.2 +/- 1.2 Ma" (Smith et al. 2010. JVP 30:1466). These radiometric dates brac | sandstone | 155.7 - 145 Ma Jurassic |
| Jones Hole Quarry | Turner C. E., Peterson F. (1999) | Morrison - Brushy Basin | mudstone | 157.3 - 145 Ma Jurassic |
Recorded Fossils
References
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
