Ragley Lumber #D1 well - 13382ft: Eocene, Louisiana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Calamuspollenites spp. microspore
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1 specimen | |||||||||
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Casurinidites pulcher microspore
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1 specimen | |||||||||
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Casurinidites informal sp. 1 microspore
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2 specimens | |||||||||
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Thompsonipollis magnificus microspore
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20 specimens | |||||||||
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Sterisporites bujargensis microspore
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2 specimens | |||||||||
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Sterisporites steroides microspore
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1 specimen | |||||||||
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Pleuricellaesporites spp.
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6 specimens | |||||||||
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Inapertisporites spp.
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3 specimens | |||||||||
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Monoporisporites spp.
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1 specimen | |||||||||
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Diporisporites informal type 2
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1 specimen | |||||||||
| (Elsik and Dilcher, 1974) | ||||||||||
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Dicellaesporites spp.
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1 specimen | |||||||||
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Tracheophyta informal Trilete spore spp. microspore
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1 specimen | |||||||||
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Cedripites spp. microspore
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1 specimen | |||||||||
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Spermatophyta informal Pollen spp. microspore
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21 specimens | |||||||||
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Angiospermae
- Malvales
- Bombacaceae
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Bombacacidites spp. microspore
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1 specimen | |||||||||
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Angiospermae
- Malpighiales
- Euphorbiaceae
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Tricolporopollenites spp. microspore
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1 specimen | |||||||||
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Angiospermae
- Fagales
- Fagaceae
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Cupuliferoipollenites spp. microspore
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1 specimen | |||||||||
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Angiospermae
- Fagales
- Betulaceae
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Alnipollenites verus microspore
Potonie 1931
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1 specimen | |||||||||
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Angiospermae
- Fagales
- Juglandaceae
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Caryapollenites informal sp. <29 micrometers microspore
Potonié 1960
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3 specimens | |||||||||
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Caryapollenites spp. microspore
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1 specimen | |||||||||
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Angiospermae
- Proteales
- Proteaceae
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Proteacidites spp. microspore
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1 specimen | |||||||||
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Triporopollenites bituitus microspore
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4 specimens | |||||||||
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Triporopollenites informal sp. 1 microspore
Pflug and Thomson 1953
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4 specimens | |||||||||
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Triporopollenites spp. microspore
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20 specimens | |||||||||
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Coniferales
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Coniferales informal Bisaccate spp. microspore
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29 specimens | |||||||||
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Coniferales
- Cupressaceae
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Taxodium spp. microspore
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41 specimens | |||||||||
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Coniferales
- Podocarpaceae
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Podocarpus spp. microspore
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1 specimen | |||||||||
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Pinopsida
- Pinales
- Pinaceae
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Pinuspollenites spp. microspore
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23 specimens | |||||||||
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Lycopodiopsida
- Lycopodiales
- Lycopodiaceae
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Hamulatisporites amplus microspore
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1 specimen | |||||||||
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Lycopodiumsporites spp. microspore
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1 specimen | |||||||||
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unclassified
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Triplanosporites spp. microspore
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1 specimen | |||||||||
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Polypodiopsida
- Polypodiaceae
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Verrucatosporites spp. microspore
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1 specimen | |||||||||
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Laevigatosporites spp. microspore
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22 specimens | |||||||||
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Polypodiopsida
- Schizaeales
- Schizaeaceae
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Cicatricosisporites dorogensis microspore
Potonie and Gelletich 1933
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6 specimens | |||||||||
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unclassified
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Microreticulatisporites spp. microspore
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2 specimens | |||||||||
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Pteridopsida
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Deltoidospora spp. microspore
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29 specimens | |||||||||
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Leiotriletes spp. microspore
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19 specimens | |||||||||
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Osmundacidites spp. microspore
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1 specimen | |||||||||
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Chlorophyceae
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Pediastrum spp. microspore
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4 specimens | |||||||||
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unclassified
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Schizosporis spp. microspore
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4 specimens | |||||||||
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Tricolpopollenites spp. microspore
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1 specimen | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Louisiana | County: | Allen |
| Coordinates: | 30.0° North, 92.0° West (view map) | ||||
| Paleocoordinates: | 31.6° North, 81.0° West |
Time
| Period: | Paleogene | Epoch: | Eocene |
| 10 m.y. bin: | Cenozoic 2-3 | ||
| Key time interval: | Eocene | ||
| Age range of interval: | 56.00000 - 33.90000 m.y. ago |
Stratigraphy
| Geological group: | Wilcox | ||||
| Local section: | Ragley Lumber Well #D1 | Local bed: | -13382ft | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Horizon sample from drill core. Gregory and Hart (1995a, pollen and spores) do not recognize the Clairbornian in the core, but in Gregory and Hart (1995, dinoflagellates), they do. Both papers look at the same samples from the same core and derive different age assignments because they treat each independently. RAL elected to enter a uniform age assignment for both papers. | |||||
Lithology and environment
| Primary lithology: | siltstone | ||
| Secondary lithology: | "shale" | ||
| Lithology description: 50 siltstone and shale samples used in the study by Gregory (1991) | |||
| Environment: | deltaic indet. | Tectonic setting: | passive margin |
| Glacial or sequence phase: | regressive | ||
| Geology comments: ...due to a decrease in sediment supply in late Sabian, the style of deltaic sedimentation changed from fluvial-dominated to wave-dominated, shelf-edge deltas (Lowery 1987) | |||
Taphonomy
| Modes of preservation: | original carbon,original cellulose |
| Size of fossils: | microfossils |
Collection methods and comments
| Collection methods: | surface (in situ),chemical,field collection |
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Database number: | 33823 | ||
| Authorizer: | H. Sims | Enterer: | A. McGowan, J. Cassara |
| Modifier: | A. McGowan | Research group: | paleobotany |
| Created: | 2003-08-07 09:32:39 | Last modified: | 2003-08-18 18:25:13 |
| Access level: | the public | Released: | 2003-08-07 09:32:39 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 4067. | W. A. Gregory and G. F. Hart. 1995. Distribution of pollen and spores in a subsurface marine Wilcox (Paleocene-Eocene) section in southwest Louisiana. Palynology 19:1-43 [R. Lupia/R. Vaughn] |