New Madrid test well 1-X, 1698.5-1702 ft: Danian, Missouri
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Coccolithophyceae
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Lanternithus cf. duocavus
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Markalius inversus
(Deflandre 1954)
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Coccolithophyceae
- Braarudosphaeraceae
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Braarudosphaera discula
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Braarudosphaera bigelowi
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Coccolithophyceae
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Coccolithus pelagicus
(Wallich 1877)
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Cruciplacolithus tenuis
(Stradner 1961)
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| original and current combination Heliorthus tenuis | |||||||
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Coccolithophyceae
- Eiffellithales
- Chiastozygaceae
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Zygodiscus sigmoides
Bramlette and Sullivan 1961
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| recombined as Zeugrhabdotus sigmoides | |||||||
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Coccolithophyceae
- Isochrysidales
- Noelaerhabdaceae
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Cepekiella aff. lumina
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Coccolithophyceae
- Coccolithales
- Coccolithaceae
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Ericsonia subpertusa
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Dinophyceae
- Thoracosphaerales
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Thoracosphaera spp.
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Missouri | County: | New Madrid |
| Coordinates: | 36.4° North, 89.6° West (view map) | ||||
| Paleocoordinates: | 39.7° North, 68.3° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | hand sample |
Time
| Period: | Paleogene | Epoch: | Paleocene |
| Stage: | Danian | 10 m.y. bin: | Cenozoic 1 |
| Key time interval: | Danian | ||
| Age range of interval: | 66.00000 - 61.60000 m.y. ago |
Stratigraphy
| Formation: | Clayton | ||||
| Local section: | New Madrid test well 1-X | Local bed: | 1698.5-1702 ft | ||
| Stratigraphy comments: Two samples from the Clayton Formation at 1698.5 and 1702 ft contain an assemblage possibly from Zone NP2 (Danian) | |||||
Lithology and environment
| Primary lithology: | glauconitic,green carbonaceous claystone |
| Includes fossils? | Y |
| Lithology description: Light green-gray, glauconitic, fossiliferous clay interbedded with green-white, very glauconitic, fossiliferous marl; locally contains more than 60% glauconite. | |
| Environment: | marginal marine indet. |
Taphonomy
| Modes of preservation: | body,original calcite |
| Size of fossils: | microfossils |
| Temporal resolution: | time-averaged |
| Spatial resolution: | allochthonous |
Collection methods and comments
| Collection methods: | core,survey of museum collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | USGS |
Metadata
| Database number: | 232026 | ||
| Authorizer: | P. Jardine | Enterer: | H. Morck | Research group: | micropaleontology |
| Created: | 2023-10-11 04:13:29 | Last modified: | 2023-10-11 04:13:29 |
| Access level: | the public | Released: | 2023-10-11 04:13:29 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 85852. | N. O. Frederiksen, L. M. Bybell, R. A. Christopher, A. J. Crone, L. E. Edwards, T. G. Gibson, J. E. Hazel, J. E. Repetski, D. P. Russ, C. C. Smith, and L.W. Ward. 1982. Biostratigraphy and paleoecology of lower Paleozoic, upper Cretaceous, and lower Tertiary rocks in U.S. Geological Survey New Madrid test wells, Southeastern Missouri. Tulane Studies in Geology and Paleontology 17(2):23-45 [P. Jardine/H. Morck] |