Middle Sandstone Member z Kingscourt: Griesbachian, Ireland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Protozoa
- Tintinnida
|
||||||||||
|
Tintinnida spp. marine palyn
Corliss 1955
|
||||||||||
| P | ||||||||||
|
unclassified
|
||||||||||
|
Acritarcha spp. marine palyn
Evitt 1963
|
||||||||||
| P | ||||||||||
|
Klausipollenites schaubergeri microspore
|
||||||||||
| R | ||||||||||
|
Guttulapollenites sp. microspore
Goubin
|
||||||||||
| R | ||||||||||
|
Stellapollenites sp. microspore
Lele 1965
|
||||||||||
| R | ||||||||||
|
Ginkgoopsida
- Caytoniales
|
||||||||||
|
Vitreisporites pallidus microspore
Nilsson 1958
|
||||||||||
| P | ||||||||||
|
unclassified
|
||||||||||
|
? Cycadopites sp. microspore
Wodehouse 1933
|
||||||||||
| R | ||||||||||
|
Striatiti spp. microspore
|
||||||||||
| F multi-taeniate pollen grains mostly Striatisaccus | ||||||||||
|
Scytinasciae spp. marine palyn
|
||||||||||
| P | ||||||||||
|
? Lundbladispora spp. microspore
Balme 1963
|
||||||||||
| A | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Ireland |
| Coordinates: | 53.9° North, 6.8° West (view map) |
| Paleocoordinates: | 29.3° North, 17.8° East (Wright 2013) |
| Basis of coordinate: | based on nearby landmark |
| Altitude: | 71 meters |
| Geographic resolution: | small collection |
Time
| Period: | Triassic | Epoch: | Early Triassic |
| Stage: | Induan | 10 m.y. bin: | Triassic 1 |
| *Period: | Early/Lower Triassic | *Epoch: | Griesbachian |
| Key time interval: | Griesbachian | ||
| Age range of interval: | 251.902 - 250.5 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Geological group: | New Red Sandstone | Formation: | Kingscourt Sandstone | Member: | Middle Sandstone |
| Local section: | boring T45 IGS | Local bed: | z | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Thickness 2-30m. This impersistent member is only known from a few boreholes. | |||||
Lithology and environment
| Primary lithology: | "cross stratification",planar lamination,gray sandstone | ||
| Secondary lithology: | "shale" | ||
| Includes fossils? | Y | ||
| Lithology description: It is characterized by parallel bedded grey-white fine sandstones, that die out to the west. Internal erosion planes and cross-laminae are present. In one core fragment composed of grey sandstone with some thin shaly intercalations, the latter have yielded a well-preserved palynological assemblage. Tintinnida, remains of Foraminifera, and the abundance of Acritarcha point to marine conditions. | |||
| Environment: | marine indet. | Tectonic setting: | foreland basin |
Taphonomy
| Modes of preservation: | body,original sporopollenin |
| Size of fossils: | microfossils |
| Preservation of anatomical detail: | good |
| Temporal resolution: | time-averaged |
| Spatial resolution: | allochthonous |
Collection methods and comments
| Collection methods: | core,chemical,mechanical,survey of museum collection |
| Reason for describing collection: | biostratigraphic analysis |
| Taxonomic list comments:P Present-percentage not known) 1-5% Rare 6-15% Frequent 16-25% Common >25 % Abundant | |
Metadata
| Database number: | 26381 | ||
| Authorizer: | C. Looy | Enterer: | C. Looy |
| Modifier: | C. Looy | Research group: | paleobotany |
| Created: | 2002-10-15 05:37:22 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2002-10-15 05:37:22 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 6998. | ETE | H. Visscher. 1971. The Permian and Triassic of the Kingscourt Outlier, Ireland. Geological Survey of Ireland Special Paper 1:1-114 [C. Looy/C. Looy/M. Uhen] |