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Diatom biostratigraphy and age of the Pliocene Sørsdal Formation, Vestfold Hills, East Antarctica
Citation
Harwood, DM and McMinn, A and Quilty, PG, Diatom biostratigraphy and age of the Pliocene Sorsdal Formation, Vestfold Hills, East Antarctica, Antarctic Science, 12, (4) pp. 443-462. ISSN 0954-1020 (2000) [Refereed Article]
Abstract
Fossil marine diatom assemblages from the Sørsdal Formation, a deposit of diatomaceous sand from Marine Plain in the Vestfold Hills, provide age and palaeoenvironmental information from a Pliocene coastal setting in East Antarctica. Benthic and meroplanktic diatom taxa suggest deposition in a shallow coastal embayment with water depths of 20-25 m. Diatom biostratigraphy indicates that the Sørsdal Formation belongs to the Fragilariopsis barronii Zone (4.5 to 4.1 Ma), through correlation to reference sections in the Ross Sea and Southern Ocean. Features of the other biota suggest higher sea-surface temperatures and reduced sea-ice cover, consistent with global records of higher sea level.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Research Division: | Earth Sciences |
| Research Group: | Geology |
| Research Field: | Palaeontology (incl. Palynology) |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding Knowledge |
| Objective Field: | Expanding Knowledge in the Earth Sciences |
| UTAS Author: | McMinn, A (Professor Andrew McMinn) |
| UTAS Author: | Quilty, PG (Dr Pat Quilty) |
| ID Code: | 19636 |
| Year Published: | 2000 |
| Web of Science® Times Cited: | 45 |
| Deposited By: | IASOS |
| Deposited On: | 2000-08-01 |
| Last Modified: | 2001-05-01 |
| Downloads: | 0 |
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