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Mancos Shale - lower shale, Arizona, USA
| Formation | Mancos Shale |
|---|---|
| Member | lower shale |
| Age: | 93.5 - 89.3 Ma Late/Upper Cretaceous |
| Interval | Late Cenomanian |
| Tectonic Setting | Foreland basin |
| Lithology | shale/"carbonate", marl, "shale"/"limestone", "shale", "siliciclastic", "siliciclastic"/siltstone |
| Number of Collections | 68 |
| Number of Occurrences | 154 |
Recorded Sample Locations
| Location | Region | Stratigraphic Name |
|---|---|---|
| MNA Loc. 992: BM 4 | Apache County, Arizona, USA | Mancos Shale - lower shale |
| MNA Loc. 236: BM 10 | Apache County, Arizona, USA | Mancos Shale - lower shale |
| MNA Loc. 254: BM 10 | Apache County, Arizona, USA | Mancos Shale - lower shale |
| MNA Loc 262: Bed 21 | Coconino County, Arizona, USA | Mancos Shale - lower shale |
| MNA Loc. 989: 7 m above BM 77 | Apache County, Arizona, USA | Mancos Shale - lower shale |
| MNA Loc 296: BM 4 | Apache County, Arizona, USA | Mancos Shale - lower shale |
| MNA Loc. 298: BM 8 | Navajo County, Arizona, USA | Mancos Shale - lower shale |
| MNA Loc. 324: BM 10 | Coconino County, Arizona, USA | Mancos Shale - lower shale |
| MNA Loc. 306: BM 10 | Apache County, Arizona, USA | Mancos Shale - lower shale |
| MNA Loc. 814: BM 10 | Coconino County, Arizona, USA | Mancos Shale - lower shale |
| MNA Loc 338: basal Mancos | Navajo County, Arizona, USA | Mancos Shale - lower shale |
| MNA Loc. 344: shale facies | Coconino County, Arizona, USA | Mancos Shale - lower shale |
| MNA Loc. 387: BM 10 | Navajo County, Arizona, USA | Mancos Shale - lower shale |
Associated Units
| Stratigraphic Name | Age | Lithology | Occurrence Records |
|---|---|---|---|
| Dakota - upper sandstone | 99.6 - 93.5 Ma Late/Upper Cretaceous | sandstone/"shale", sandstone | 154 |
| Mancos Shale | 83.5 - 70.6 Ma Late/Upper Cretaceous | shale, siltstone, "limestone", sandstone, "siliciclastic", "shale"/"carbonate", "shale"/"limestone", marl, "shale"/siltstone, sandstone/"shale", sandstone/claystone | 940 |
| Mancos Shale - Hopi Sandstone | 93.5 - 89.3 Ma Late/Upper Cretaceous | sandstone | 2 |
| Mancos Shale - middle shale | 93.5 - 89.3 Ma Late/Upper Cretaceous | shale | 28 |
| Mancos Shale - upper shale | 93.5 - 89.3 Ma Late/Upper Cretaceous | siliciclastic, "shale", sandstone | 11 |
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!
