The Sabrina microfloras of East Antarctica: Late Cretaceous, Paleogene or reworked?

The published latest Palaeocene to Early–Middle Eocene age limits of the Sabrina microfloras, offshore Aurora Subglacial Basin, East Antarctica, largely depend on 1970s age-range data for fossil pollen and spore species in the continental margin basins of southern Australia. This paper uses updated...

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Bibliographic Details
Published in:Palynology
Main Author: Macphail, Michael
Format: Article in Journal/Newspaper
Language:English
Published: Taylor and Francis Inc.
Subjects:
East Antarctica
Sabrina coast
glaciation
Aurora Subglacial Basin
Sabrina microfloras
Paleogene
Late Cretaceous
Maastrichtian
Campanian
Sabrina Coast
Antarc*
Antarctica
Online Access:http://hdl.handle.net/1885/311111
https://doi.org/10.1080/01916122.2021.1921070
https://openresearch-repository.anu.edu.au/bitstream/1885/311111/3/TMP398646282202412114226.pdf.jpg
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Summary:The published latest Palaeocene to Early–Middle Eocene age limits of the Sabrina microfloras, offshore Aurora Subglacial Basin, East Antarctica, largely depend on 1970s age-range data for fossil pollen and spore species in the continental margin basins of southern Australia. This paper uses updated biostratigraphical data from southern Australia, including the basins closest to the Aurora Basin throughout the Late Cretaceous and Paleogene, to propose that the age of the terrestrial component of the Sabrina microfloras is Campanian to Maastrichtian, not Paleogene. However, the revised age limits do not preclude these microfloras being redeposited more or less intact during the development and expansion of ice-sheets on East Antarctica, i.e. most probably during the late Paleogene based on other evidence from East Antarctica.

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