Profile I; Layer 12 - Gazdzicki and Halina (1984): Pliocene, Antarctica

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Stenolaemata - Cyclostomata - Multisparsidae
Idmonea sp. Lamouroux 1821
Gastropoda - Vermetidae
Petaloconchus cf. intortus (Lamarck 1818)
Bivalvia - Pectinida - Pectinidae
Chlamys (Chlamys) anderssoni (Hennig 1911)
recombined as Austrochlamys anderssoni
Bivalvia - Cardiida - Gaimardiidae
? Costokidderia sp. Finlay 1927
Bivalvia - Cardiida - Veneridae
Venus (Ventricoloidea) newtoni (Wilckens 1911)
recombined as Eurhomalea newtoni
Bivalvia - Hiatellida - Hiatellidae
Panopea cf. regularis (Ortmann 1900)
recombined as Panopea (Panopea) regularis
Panopea cf. undatoides (Ortmann 1902)
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 1 Local bed:Layer 12
Local order:bottom to top
Regional section:Low Head-Lions Rump
Stratigraphic resolution:bed
Stratigraphy comments: Best exposure of the Low Head Mbr; sequence rests of basalts of the Mazurek Point Fm; represented by basal conglomerates over 15 m thick. 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 I; Layer 12
Database number:41580
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2004-07-16 22:30:25 Last modified:2013-11-25 13:37:23
Access level:the public Released:2004-07-16 22:30:25
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]