Profile 2; Layer 2 - Gazdzicki and Halina (1984): Pliocene, Antarctica
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Stenolaemata
- Cyclostomata
- Cerioporidae
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Heteropora pelliculata
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Stenolaemata
- Cyclostomata
- Multisparsidae
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Idmonea cf. lerichei
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Stenolaemata
- Cyclostomata
- Diastoporidae
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Spiropora sp.
Lamouroux 1821
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Stenolaemata
- Cyclostomata
- Lichenoporidae
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Lichenopora cf. radiata
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Lichenopora sp.
Defrance 1823
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Stenolaemata
- Cyclostomata
- Fasciculiporidae
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Fasciculipora cf. ramosa
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Stenolaemata
- Cyclostomata
- Horneridae
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Hornera antarctica
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Gymnolaemata
- Cheilostomata
- Lepraliellidae
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Holoporella cf. albirostris
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| synonym of Celleporaria | |||||||
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Holoporella cf. parvula
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| synonym of Celleporaria | |||||||
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Gymnolaemata
- Cheilostomata
- Bryocryptellidae
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Cyclocolposa perforata
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Gymnolaemata
- Cheilostomata
- Romancheinidae
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Hemicyclopora cf. polita
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Exochella sp.
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Gymnolaemata
- Cheilostomata
- Microporidae
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Micropora coriacea
(Johnston 1847)
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Gymnolaemata
- Cheilostomata
- Pasytheidae
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Pasythea cf. tulipifera
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Gymnolaemata
- Cheilostomata
- Cryptosulidae
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Cryptosula sp.
Canu and Bassler 1925
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Gymnolaemata
- Cheilostomata
- Celleporidae
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Tegminula sp.
Jullien 1882
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Cellepora cf. parasitica
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Gymnolaemata
- Cheilostomata
- Phidoloporidae
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Hippopozoon sp.
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Sertella cf. cellulosa
(Linnaeus 1767)
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| recombined as Reteporella cellulosa | |||||||
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Gymnolaemata
- Cheilostomata
- Smittinidae
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Smittina (Smittina) sp.
Bassler 1953
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Gymnolaemata
- Cheilostomata
- Cellariidae
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Cellaria crassa
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Cellaria cf. fistulosa
Linnaeus 1758
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Melicerita sp.
Jullien 1888
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| synonym of Cellaria | |||||||
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Gymnolaemata
- Cheilostomata
- Porinidae
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Cyphonella cf. nodosa
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Bivalvia
- Pholadida
- Corbulidae
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Corbula (Varicorbula) cf. hatcheri
(Ortmann 1900)
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Bivalvia
- Pectinida
- Pectinidae
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Pecten cf. centralis
Sowerby 1846
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| recombined as Jorgechlamys centralis | |||||||
| see common names | |||||||
Geography
| Country: | Antarctica |
| Coordinates: | 62.3° South, 59.0° West (view map) |
| Paleocoordinates: | 62.1° South, 58.4° West |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Pliocene |
| 10 m.y. bin: | Cenozoic 6 | ||
| Key time interval: | Pliocene | ||
| Age range of interval: | 5.33300 - 2.58000 m.y. ago |
Stratigraphy
| Formation: | Polonez Cove | Member: | Low Head | ||
| Local section: | Profile 2 | Local bed: | Layer 2 | ||
| Local order: | bottom to top | ||||
| Regional section: | Low Head-Lions Rump | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: The sequence is about 2 m thick, comprises weathered basalt conglomerate. Glaciomarine strata of the Polonez Cover Formation rest on basalts of the Mazurek Point Formattion, and are overlain by porphyritic lavas alternating with tuffs and agglomerates of the Boy Point Fortmation. The Polonez Cover Formation comprises four lithostratigraphic members, of which the lowest, the Karakowiak Glacier Mbr, consists of non-marine tillites, while the succeeding three members, the Low Head Mbr, the Siklawa Mbr, and the Oberek Cliff Mbr, are glaciomarine strata. The Low Head Mbr is the richest fossil-bearing unit of the Polonez Cove Formation and is represented by up to 15 m of ungraded conglomerates, consisting mainly of angular and subrounded basalt fragments, with ice-rafted dropstones, with common Chlamys coquina. The Pliocene age is suggested on the basis of macrofaunal similarity with Antarctic mainland assemblages, and from microfossils | |||||
Lithology and environment
| Primary lithology: | shelly/skeletal conglomerate |
| Includes fossils? | Y |
| Lithology description: The Polonez Cove Formation is represented by up to 15 m of ungraded conglomerates, consisting mainly of angular and subrounded basalt fragments, with ice-rafted dropstones, with common Chlamys coquina. | |
| Environment: | coastal indet. |
| Geology comments: Glacio-marine strata, including ice-rafted dropstones. | |
Taphonomy
| Modes of preservation: | body,original aragonite,original calcite |
| Size of fossils: | macrofossils,mesofossils,microfossils |
| Disassociated minor elements: | some |
Collection methods and comments
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Collected by Gazdzicki and others in 1978-1979, 1980-1981 | |
| Taxonomic list comments:Includes all taxa mentioned in paper (coccoliths, diatoms, chrysomonads, foraminifers, worms, bryozoans, brachiopods, bivalves, gastropods, ostracods, crinoids, ophiuroids, echinoids) | |
Metadata
| Also known as: | Profile 2; Layer 2 | ||
| Database number: | 41578 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2004-07-16 22:21:57 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2004-07-16 22:21:57 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 11141. | A. Gazdzicki and H. Pugaczewska. 1984. Biota of the "Pecten Conglomerate" (Polenez Cove Formation, Pliocene) of King George Island (South Shetland Islands, Antarctica). Studia Geologica Polonica 79:59-120 [A. Miller/A. Hendy/M. Uhen] |