ASC-1. Northeast of Leeds. 09 meters: Osagean, Alabama
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Blastoidea
- Granatocrinida
- Granatocrinidae
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Granatocrinus granulatus
(Romer 1851)
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Alabama | County: | St. Clair |
| Coordinates: | 33.6° North, 86.5° West (view map) | ||||
| Paleocoordinates: | 34.7° South, 57.2° West (Wright 2013) | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Carboniferous | Epoch: | Mississippian |
| 10 m.y. bin: | Carboniferous 1-2 | ||
| Key time interval: | Osagean | ||
| Age range of interval: | 351.9 - 343.1 m.y. ago |
Stratigraphy
| Formation: | Fort Payne | ||||
| Local section: | ASC-1 | Local bed: | 9.0 m | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: and Ruppel (1979) has correlated the Fort Payne in northern Alabama to the lower Keokuk based on conodont | |||||
Lithology and environment
| Primary lithology: | red chert |
| Lithology description: dark brown, thin bedded, porous and dense chert with very thin clay laminae | |
| Environment: | basinal (siliceous) |
| Geology comments: Kentucky the Fort Payne Chert is interpreted to be basinal, having filled in a starved basin in the areas of nondeposition from Borden Delta (Lineback, 1966). Gutschick and Sandberg (1983) suggested that the Fort Payne Chert in the southern Appalachians was deposited on a shallow, slowly subsiding, carbonate ramp between the Borden deltaic complex, to the north, and the Ouachita trough, to the west. The Appalachians formed a low-relief landmass that bordered the ramp to the east. Thomas (1972) concluded that the Fort Payne Chert in Alabama was de- posited on a tectonically stable marine shelf. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 230551 | ||
| Authorizer: | P. Wagner | Enterer: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2023-06-30 13:13:12 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2023-06-30 13:13:12 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 39139. | J. A. Waters and G. L. Bell, Jr. 1986. A new occurrence of Granatocrinus granulatus (Roemer) from the Payne Chert of Alabama. Journal of Paleontology 60(1):177-180 [J. Alroy/D. Mathieson] |