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Prydz Bay Unit III (Eocene of Antarctica)

Where: Prydz Bay, Antarctica (69.0° S, 75.0° E: paleocoordinates 68.2° S, 69.6° E)

• coordinate estimated from map

When: Marine dinocyst other zone, Late/Upper Eocene (37.2 - 33.9 Ma)

• The proposed Late Eocene age of sediments between 142.5 and 240.36 mbsf at Site 1166 is primarily based on marine dinocyst and acritarch species (see discussion in Macphail and Truswell 2004a).

Environment/lithology: delta plain; silty, sandy lithology not reported

• During the period represented by Units II and III, the East Antarctic ice sheet extended from the mountain front down to sea level and onto the continental shelf. Unit III probably represents glacial outwash sands deposited on an alluvial plain or delta (Whitehead et al. 2006).

•The sedimentary record at Site 1166 shows that the sequence spans the transition from preglacial to glacial conditions.

• Unit III (156.62267.17 mbsf), which consists of massive and deformed sands with a silty clay matrix in its lower parts, is rich in organic matter and includes pieces of wood.

Size class: microfossils

Preservation: original sporopollenin

Collection methods: chemical,

• The material that forms the basis of the present study comes from ODP Site 1166 in Prydz Bay, drilled during Leg 188 of the Ocean Drilling Program.

Primary reference: E. M. Truswell and M. K. Macphail. 2009. Polar forests on the edge of extinction: what does the fossil spore and pollen evidence from East Antarctica say?. Australian Systematic Botany (22)57-106 [C. Jaramillo/C. Jaramillo] more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 168824: authorized by Carlos Jaramillo, entered by Carlos Jaramillo on 30.04.2015

Creative Commons license: CC BY (attribution)