Profile 2; Layer 3 - Gazdzicki and Halina (1984) (Pliocene of Antarctica)

Also known as Profile 2; Layer 3

Where: Antarctica (62.3° S, 59.0° W: paleocoordinates 62.1° S, 58.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Low Head Member (Polonez Cove Formation), Pliocene (5.3 - 2.6 Ma)

• 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

• bed-level stratigraphic resolution

Environment/lithology: coastal; shelly/skeletal conglomerate

• Glacio-marine strata, including ice-rafted dropstones.
• 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.

Size classes: macrofossils, mesofossils, microfossils

Preservation: original aragonite, original calcite

Collection methods: quarrying,

• Collected by Gazdzicki and others in 1978-1979, 1980-1981

Primary reference: 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/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41577: authorized by Austin Hendy, entered by Austin Hendy on 16.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Includes all taxa mentioned in paper (coccoliths, diatoms, chrysomonads, foraminifers, worms, bryozoans, brachiopods, bivalves, gastropods, ostracods, crinoids, ophiuroids, echinoids)
Bivalvia
 Pectinida - Pectinoidae
"Pecten cf. centralis" = Jorgechlamys centralis
"Pecten cf. centralis" = Jorgechlamys centralis Sowerby 1846 scallop
Gymnolaemata
 Cheilostomata - Lepraliellidae
"Holoporella cf. albirostris" = Celleporaria, "Holoporella cf. parvula" = Celleporaria
"Holoporella cf. albirostris" = Celleporaria
"Holoporella cf. parvula" = Celleporaria
 Cheilostomata - Exochellidae
 Cheilostomata - Phidoloporidae
"Sertella cf. cellulosa" = Reteporella cellulosa
"Sertella cf. cellulosa" = Reteporella cellulosa Linnaeus 1767
 Cheilostomata - Cellariidae
Cellaria cf. fistulosa Linnaeus 1758
 Cheilostomata - Calloporidae
 Cheilostomata - Pasytheidae
Stenolaemata
 Cyclostomata -
 Cyclostomata - Multisparsidae
 Cyclostomata -