Burro Canyon Formation
| Burro Canyon Formation Stratigraphic range: Early Cretaceous | |
|---|---|
| Type | Formation |
| Underlies | Mancos Shale Formation |
| Overlies | Morrison Formation |
| Thickness | 0–55 metres (0–180 ft) |
| Location | |
| Region | Colorado, New Mexico, Utah |
| Country | United States |
The Burro Canyon Formation is an Early Cretaceous Period sedimentary geologic formation, found in western Colorado, the Chama Basin and eastern San Juan Basin of northern New Mexico, and in eastern Utah.[1]
Geology
The lithology of the Burro Canyon Formation is dominated by medium- to fine-grained sandstone, much of which has rounded chert and quartz pebbles above scour surfaces.[1] The Burro Canyon Formation was deposited in a braided- stream system.[1]
The formation overlies the Morrison Formation, and underlies the Mancos Shale Formation.[1] It is similar to the Cedar Mountain Formation in the region.
Fossils
The Burro Canyon Formation preserves fossils dating back to the Early Cretaceous period of the Mesozoic Era.[2]
See also
- List of fossiliferous stratigraphic units in Colorado
- List of fossiliferous stratigraphic units in New Mexico
- List of fossiliferous stratigraphic units in Utah
- Paleontology in Colorado
- Paleontology in New Mexico
- Paleontology in Utah
References
- 1 2 3 4 New Mexico Geological Association.edu: "SURFACE and SUBSURFACE STRATIGRAPHY of the BURRO CANYON FORMATION, DAKOTA SANDSTONE, and INTERTONGUED MANCOS SHALE of the CHAMA BASIN, NEW MEXICO"; 2005.
- ↑ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 8 July 2014.
| Cretaceous Period | |
|---|---|
| Lower/Early Cretaceous | Upper/Late Cretaceous |
| Berriasian | Valanginian | Hauterivian Barremian| Aptian | Albian |
Cenomanian | Turonian | Coniacian Santonian |Campanian | Maastrichtian |
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