Poivre Fm, Excavation east of M43 gas injection well: Middle Miocene, Australia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Potamididae
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Cerithidea sp.
Swainson 1840
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Gastropoda
- Ampullinidae
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Ampullina ? butleri
McNamara and Kendrick 1994
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Bivalvia
- Cardiida
- Tellinidae
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Tellina informal sp. B sensu lato
Linnaeus 1758
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| see common names | |||||||
Geography
| Country: | Australia | State/province: | Western Australia |
| Coordinates: | 20.8° South, 115.4° East (view map) | ||
| Paleocoordinates: | 29.3° South, 110.9° East | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Middle Miocene | ||
| Age range of interval: | 15.98000 - 11.63000 m.y. ago |
Stratigraphy
| Formation: | Poivre | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: Miocene rocks of the Poivre Fm overly Eocene rocks with a transgressive unconformity. THICKNESS: As thick as 29 m. AGE: Originally determined to be Early Miocene by Glaessner (in McWhae and Parry, 1954), since refined to be Middle Miocene in age (Caproniere 1975; McNamara and Kendrick 1994). STRATIGRAPHIC POSITION: Not stated in text. | |||||
Lithology and environment
| Primary lithology: | very coarse,shelly/skeletal,red lithified calcareous "limestone" |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Hard yellow-pink limestone. GENERAL LITHOLOGY: No specific lithology for this collection. The Poivre Fm shows pronounced vertical changes in lithology, ranging from brown, yellow to pink limestone, classified as calcarenites of fine or coarse grain-size. LITHIFICATION: Lithified, stated in text to be "hard limestone" | |
| Environment: | shallow subtidal indet. |
| Geology comments: ENVIRONMENT: Very shallow water, calcareous, soft sandy substrates. | |
Taphonomy
| Modes of preservation: | cast,mold/impression,original calcite,replaced with calcite |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | poor |
Collection methods and comments
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: COLLECTORS: Collected by authors, K.J. McNamara and G.W. Kendrick. REPOSITORY: Western Australian Museum (WAM) | |
| Taxonomic list comments:COMPLETENESS: Exhaustive for gastropoda, bivalvia and echinoidea, although the fauna is probably depleted through poor preservation and requires further collecting. Foraminifera mentioned to be present, but not listed. NOMENCLATURE: Authoritative publication, though poor preservation precludes description of many new forms, and assignment of species names. | |
Metadata
| Also known as: | Loc. 17 (McNamara and Kendrick 1994) | ||
| Database number: | 63315 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2006-08-11 02:46:31 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2006-08-11 02:46:30 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 18201. | K.J. McNamara and G.W. Kendrick. 1994. Cenozoic Molluscs and Echinoids of Barrow Island, Western Australia. Records of the Western Australian Museum Supplement 51 [A. Miller/A. Hendy] |